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• pfsense peer-to-peer OpenVPN not connecting

  - by John P

  I'm trying to setup a peer-to-peer OpenVPN between two pfsense servers running 2.0.1-RELEASE, but the client keeps getting the connection dropped, with a status of "reconnecting; ping-restart" and nothing appears to be routing between them. Both these firewalls are also doing PPTP VPNs that are working correctly. FW01 ("server") ======================= LAN: 10.1.1.2/24 WAN: xx.xx.126.34/27 ServerMode: Peer to Peer (Shared Key) Protocol: UDP DeviceMode: tun Interface: WAN Port 1194 Tunnel: 10.0.8.1/30 Local Network: 10.1.1.0/24 Remote Network: 192.168.1.0/24 Firewall Rule in OpenVPN tab: UDP * * * * * none FW03 (client) LAN: 192.168.1.2/24 WAN: xx.xx.9.66/27 ServerMode: Peer to Peer (Shared Key) Protocol: UDP DeviceMode: tun Interface: WAN Server Host: xx.xx.126.34 Tunnel: -- also tried 10.1.8.0/24 Remote Network: 10.1.1.0/24 Client Logs: System Log Apr 6 18:00:08 kernel: ... Restarting packages. Apr 6 18:00:13 check_reload_status: Starting packages Apr 6 18:00:19 php: : Restarting/Starting all packages. Apr 6 18:00:56 kernel: ovpnc1: link state changed to DOWN Apr 6 18:00:56 check_reload_status: Reloading filter Apr 6 18:00:57 check_reload_status: Reloading filter Apr 6 18:00:57 kernel: ovpnc1: link state changed to UP Apr 6 18:00:57 check_reload_status: rc.newwanip starting ovpnc1 Apr 6 18:00:57 check_reload_status: Syncing firewall Apr 6 18:01:02 php: : rc.newwanip: Informational is starting ovpnc1. Apr 6 18:01:02 php: : rc.newwanip: on (IP address: ) (interface: ) (real interface: ovpnc1). Apr 6 18:01:02 php: : rc.newwanip: Failed to update IP, restarting... Apr 6 18:01:02 php: : send_event: sent interface reconfigure got ERROR: incomplete command. all reload reconfigure restart newip linkup sync Client OpenVPN log Apr 6 18:39:14 openvpn[12177]: Inactivity timeout (--ping-restart), restarting Apr 6 18:39:14 openvpn[12177]: SIGUSR1[soft,ping-restart] received, process restarting Apr 6 18:39:16 openvpn[12177]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts Apr 6 18:39:16 openvpn[12177]: Re-using pre-shared static key Apr 6 18:39:16 openvpn[12177]: Preserving previous TUN/TAP instance: ovpnc1 Apr 6 18:39:16 openvpn[12177]: UDPv4 link local (bound): [AF_INET]64.94.9.66 Apr 6 18:39:16 openvpn[12177]: UDPv4 link remote: [AF_INET]64.74.126.34:1194 Server OpenVPN log Apr 6 14:40:36 openvpn[22117]: UDPv4 link remote: [undef] Apr 6 14:40:36 openvpn[22117]: UDPv4 link local (bound): [AF_INET]xx.xx.126.34:1194 Apr 6 14:40:36 openvpn[21006]: /usr/local/sbin/ovpn-linkup ovpns1 1500 1557 10.1.8.1 10.1.8.2 init Apr 6 14:40:36 openvpn[21006]: /sbin/ifconfig ovpns1 10.1.8.1 10.1.8.2 mtu 1500 netmask 255.255.255.255 up Apr 6 14:40:36 openvpn[21006]: do_ifconfig, tt-ipv6=0, tt-did_ifconfig_ipv6_setup=0 Apr 6 14:40:36 openvpn[21006]: TUN/TAP device /dev/tun1 opened Apr 6 14:40:36 openvpn[21006]: Control Channel Authentication: using '/var/etc/openvpn/server1.tls-auth' as a OpenVPN static key file Apr 6 14:40:36 openvpn[21006]: NOTE: the current --script-security setting may allow this configuration to call user-defined scripts Apr 6 14:40:36 openvpn[21006]: OpenVPN 2.2.0 amd64-portbld-freebsd8.1 [SSL] [LZO2] [eurephia] [MH] [PF_INET6] [IPv6 payload 20110424-2 (2.2RC2)] built on Aug 11 2011 Apr 6 14:40:36 openvpn[17171]: SIGTERM[hard,] received, process exiting Apr 6 14:40:36 openvpn[17171]: /usr/local/sbin/ovpn-linkdown ovpns1 1500 1557 10.1.8.1 10.1.8.2 init Apr 6 14:40:36 openvpn[17171]: ERROR: FreeBSD route delete command failed: external program exited with error status: 1 Apr 6 14:40:36 openvpn[17171]: event_wait : Interrupted system call (code=4) Apr 6 14:06:32 openvpn[17171]: Initialization Sequence Completed Apr 6 14:06:32 openvpn[17171]: UDPv4 link remote: [undef] Apr 6 14:06:32 openvpn[17171]: UDPv4 link local (bound): [AF_INET]xx.xx.126.34:1194

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• Wireless doesn't work on a Lenovo V570

  - by Stephen

  I've had Ubuntu installed on my HD for about 3 months but ever since I ran into this wireless issue I kinda lost my lust of Ubuntu. I have zero experience getting around with/ using the console command. I have a Lenovo V570. I got the driver update for the broadcom networking card via the Additional Drivers application but that did nothing. I love the look and feel of using Ubuntu but I have no technological experience for the matter. Any help would be awesome. When I scan for wireless connections while in Ubuntu, my computer picks up nothing, while on Win7 it will pick up the handful of wireless networks around my area. My wired connection is fine, but the use of not having wireless on a laptop is rather contradictory to it as a feature. Cheers! Also, I just installed 11.10, if that helps any. Yes, I used the search before I posted this, but again I have ZERO understanding of the command stuff and need a meat and potatoes answer(s). stephen@ubuntu:~$ sudo lshw -class network [sudo] password for stephen: *-network UNCLAIMED description: Network controller product: BCM4313 802.11b/g/n Wireless LAN Controller vendor: Broadcom Corporation physical id: 0 bus info: pci@0000:03:00.0 version: 01 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list configuration: latency=0 resources: memory:f1900000-f1903fff *-network description: Ethernet interface product: RTL8111/8168B PCI Express Gigabit Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:04:00.0 logical name: eth0 version: 06 serial: f0:de:f1:63:98:14 size: 100Mbit/s capacity: 1Gbit/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.1.78 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s resources: irq:41 ioport:2000(size=256) memory:f1804000-f1804fff memory:f1800000-f1803fff stephen@ubuntu:~$ rfkill list all 0: ideapad_wlan: Wireless LAN Soft blocked: yes Hard blocked: no 1: acer-wireless: Wireless LAN Soft blocked: yes Hard blocked: no

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• Hyper-V + RRAS NAT + Port Forwarding + RDP, can I get it all working together?

  - by Tom Bull

  I am running a Windows 2008 R2 server with various services running natively and two virtualised servers running on Hyper-V. The hardware server, I'm going to call it REAL1, has one external NIC, to which I can assign any of the following IP addresses: 1.2.3.4, 1.2.3.5, 1.2.3.6, etc... I need to achieve the following: I would like to be able to connect to REAL1 via remote desktop (RDP / port 3389) on one IP address (say 1.2.3.4), but also to the virtualised servers (I'm going to call them VIRTUAL1 and VIRTUAL2) on the other available IP addresses (say 1.2.3.5 and 1.2.3.6). The easiest way of doing this is to connect the virtual servers directly to the external interface and assign them each their own IP address. REAL1 will have 1.2.3.4, VIRTUAL1 will have 1.2.3.5 and VIRTUAL2 will have 1.2.3.6. Unfortunately, although I don't directly manage the two virtual servers, I have responsibility for their security. I would like to have some kind of firewall between the virtual servers an the internet. I have tried running a virtual machine firewall, but have found the performance on Hyper-V pretty terrible. The alternative I am now trying is Routing and Remote Access (RRAS): I have set up a virtual network called 'Internal' and REAL1 has a virtual network adapter connected to this virtual network I have connected each of the virtual servers to this network too I have assigned each server static IP addresses on this virtual network (REAL1 has 10.1.1.1, VIRTUAL1 has 10.1.1.2 and VIRTUAL2 has 10.1.1.3) I have installed RRAS and set up a NAT. The external interface is the external NIC, the internal interface is the virtual NIC connected to the internal network I have assigned all the available external IP addresses to the external NIC on REAL1. The virtual servers have been set up appropriately such that their default gateway is pointing to 10.1.1.1 and they can both access externally. Success! The RRAS is routing packets. The problem I have is that when I try to port forward services from the external IP address on REAL1, it only works if there is not already a service bound to the port. Remote desktop 'greedily' binds to every available IP address on port 3389 on REAL1 so I can't selectively forward incoming traffic for 1.2.3.5:3389 to 10.1.1.2:3389. RRAS will allow me to set up this port forwarding, and no errors come up. It just doesn't work. So the question I have is: Is there a better way of doing this? Or at least is there a way of resolving the apparant conflict between RRAS and everything else on the physical server?

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• How to Bridge Two Ethernet Ports on Mac OS X

  - by Rabarberski

  How can I bridge two wired ethernet interfaces on Mac OS X (e.g. the current MacPro comes with two ethernet ports)? Googling turned up (e.g. this Apple forum post and this openvpn post) that this is fairly easy on Linux (using the brctl command) and under Windows (via Network Connections right-click Bridge Connections), but how is it done under Mac OS X? BTW: There also doesn't seem to be a macport for brctl ('port search brctl' didn't turn up any results) Note: I don't want to have 'internet sharing', which creates a new network (by handing out network addresses in a new range). I want to really 'bridge' two interfaces so to keep the same network subnet.

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• How to bridge Debian guest VM to VPN via Cisco AnyConnect Client running on Windows Vista host

  - by bgoodr

  I am running Cisco Anyconnect VPN Client version 2.5.3054 on a laptop running Windows Vista Home Premium (version 6.0.6002) Service Pack 2. I am running the VMware Player version 4.0.2 build-591240. The host operating system running under VMware Player is Debian 6.0.2.1 i386. The laptop is connected to a wireless connection, and I can browse the web from Windows Vista using Firefox just fine. I am able to boot into the Debian VM and open up a browser and access websites on the WAN from within the VM just fine. I can ping real Linux hosts on my LAN via: ping <lan_system>.local where <lan_system> is the hostname returned from uname -a on that system on my LAN. From a DOS CMD shell, I am able to ping hosts that exist on the remote network served by the Cisco AnyConnect Client's VPN network (and without the .local suffix applied as above): ping <remote_system> However, from within the Debian VM, I expect to be able to also ping those same remote hosts (<remote_system>) that are tunnelled over the VPN set up by Cisco AnyConnect Client. Let's say that I can ping a <remote_system> called flubber from a DOS CMD prompt just fine. When I execute Linux ping command from inside the Debian VM via: ping flubber It returns immediately with this output: ping: unknown host flubber For reference since I suspect it will be useful, here is the output of the route print command from the DOS CMD prompt: route print =========================================================================== Interface List 30 ...00 05 9a 3c 7a 00 ...... Cisco AnyConnect VPN Virtual Miniport Adapter for Windows 11 ...00 1b 9e c4 de e5 ...... Atheros AR5007EG Wireless Network Adapter 26 ...00 50 56 c0 00 01 ...... VMware Virtual Ethernet Adapter for VMnet1 28 ...00 50 56 c0 00 08 ...... VMware Virtual Ethernet Adapter for VMnet8 1 ........................... Software Loopback Interface 1 12 ...02 00 54 55 4e 01 ...... Teredo Tunneling Pseudo-Interface 13 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #3 32 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #4 27 ...00 00 00 00 00 00 00 e0 isatap.{E5292CF6-4FBB-4320-806D-A6B366769255} 17 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #2 20 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #8 22 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #10 24 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #11 25 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #12 29 ...00 00 00 00 00 00 00 e0 isatap.{C3852986-5053-4E2E-BE60-52EA2FCF5899} 41 ...00 00 00 00 00 00 00 e0 Microsoft ISATAP Adapter #14 =========================================================================== At the top window border of the VM, clicking on Virtual Machine, then clicking on Virtual Machine Settings, then clicking on Network Adapter, I have these two options checked: [X] Bridged: Connected directly to the physical Network [X] Replicate physical network connection state [ ] NAT: used to share the hosts's IP address [ ] Host-only: A private network shared with the host [ ] LAN segment: [ ] <LAN Segments...> <Advanced> I've toyed with the other options such as NAT and Host-only but that had no effect. Is there some way to allow the VM to access those <remote_system>'s?

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• VPN iptables Forwarding: Net-to-net

  - by Mike Holler

  I've tried to look elsewhere on this site but I couldn't find anything matching this problem. Right now I have an ipsec tunnel open between our local network and a remote network. Currently, the local box running Openswan ipsec with the tunnel open can ping the remote ipsec box and any of the other computers in the remote network. When logged into on of the remote computers, I can ping any box in our local network. That's what works, this is what doesn't: I can't ping any of the remote computers via a local machine that is not the ipsec box. Here's a diagram of our network: [local ipsec box] ----------\ \ [arbitrary local computer] --[local gateway/router] -- [internet] -- [remote ipsec box] -- [arbitrary remote computer] The local ipsec box and the arbitrary local computer have no direct contact, instead they communicate through the gateway/router. The router has been set up to forward requests from local computers for the remote subnet to the ipsec box. This works. The problem is the ipsec box doesn't forward anything. Whenever an arbitrary local computer pings something on the remote subnet, this is the response: [user@localhost ~]# ping 172.16.53.12 PING 172.16.53.12 (172.16.53.12) 56(84) bytes of data. From 10.31.14.16 icmp_seq=1 Destination Host Prohibited From 10.31.14.16 icmp_seq=2 Destination Host Prohibited From 10.31.14.16 icmp_seq=3 Destination Host Prohibited Here's the traceroute: [root@localhost ~]# traceroute 172.16.53.12 traceroute to 172.16.53.12 (172.16.53.12), 30 hops max, 60 byte packets 1 router.address.net (10.31.14.1) 0.374 ms 0.566 ms 0.651 ms 2 10.31.14.16 (10.31.14.16) 2.068 ms 2.081 ms 2.100 ms 3 10.31.14.16 (10.31.14.16) 2.132 ms !X 2.272 ms !X 2.312 ms !X That's the IP for our ipsec box it's reaching, but it's not being forwarded. On the IPSec box I have enabled IP Forwarding in /etc/sysctl.conf net.ipv4.ip_forward = 1 And I have tried to set up IPTables to forward: *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [759:71213] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 25 -j ACCEPT -A INPUT -p udp -m state --state NEW -m udp --dport 500 -j ACCEPT -A INPUT -p udp -m state --state NEW -m udp --dport 4500 -j ACCEPT -A INPUT -m policy --dir in --pol ipsec -j ACCEPT -A INPUT -p esp -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -s 10.31.14.0/24 -d 172.16.53.0/24 -j ACCEPT -A FORWARD -m policy --dir in --pol ipsec -j ACCEPT -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT Am I missing a rule in IPTables? Is there something I forgot? NOTE: All the machines are running CentOS 6.x Edit: Note 2: eth1 is the only network interface on the local ipsec box.

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• DNS slow after losing DNS Server

  - by Tim

  We have set up a small Windows Server 2008 R2 network with a domain controller which is also acting as the DNS server for the network (we opted to install DNS when setting up the domain). This network isn't connected to the Internet in any way, so all machines have been configured to use the IP address of the domain controller as their primary DNS and no secondary DNS server has been configured. If we shut down or unplug the network cable from the domain controller, DNS lookups become quite slow and the performance of the network suffers. For example, running a ping command using a hostname takes around 5-6 seconds to resolve the name. I presume this is because it is looking for the DNS, then falling back to some other method of resolving the names as the DNS server is now gone. All the machines have static IP addresses so we are considering just putting all entries in the HOSTS file of each machine. However, it would be nice to have a centralised DNS in case we one day change the IP of one of the machines. Is there a better way to speed this up?

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• Cannot connect to a VPN server - authentication failed with error code 691

  - by stacker

  When trying to connect to a VPN server, I get the 691 error code on the client, which say: Error Description: 691: The remote connection was denied because the user name and password combination you provided is not recognized, or the selected authentication protocol is not permitted on the remote access server. I validated that the username and password are correct. I also installed a certification to use with the IKEv2 security type. I also validated that the VPN server support security method. But I cannot login. In the server log I get this log: Network Policy Server denied access to a user. The user DomainName\UserName connected from IP address but failed an authentication attempt due to the following reason: The remote connection was denied because the user name and password combination you provided is not recognized, or the selected authentication protocol is not permitted on the remote access server. Any idea of what can I do? Thanks in advance! Log Name: Security Source: Microsoft-Windows-Security-Auditing Date: 12/29/2010 7:12:20 AM Event ID: 6273 Task Category: Network Policy Server Level: Information Keywords: Audit Failure User: N/A Computer: VPN.domain.com Description: Network Policy Server denied access to a user. Contact the Network Policy Server administrator for more information. User: Security ID: domain\Administrator Account Name: domain\Administrator Account Domain: domani Fully Qualified Account Name: domain.com/Users/Administrator Client Machine: Security ID: NULL SID Account Name: - Fully Qualified Account Name: - OS-Version: - Called Station Identifier: 192.168.147.171 Calling Station Identifier: 192.168.147.191 NAS: NAS IPv4 Address: - NAS IPv6 Address: - NAS Identifier: VPN NAS Port-Type: Virtual NAS Port: 0 RADIUS Client: Client Friendly Name: VPN Client IP Address: - Authentication Details: Connection Request Policy Name: Microsoft Routing and Remote Access Service Policy Network Policy Name: All Authentication Provider: Windows Authentication Server: VPN.domain.home Authentication Type: EAP EAP Type: Microsoft: Secured password (EAP-MSCHAP v2) Account Session Identifier: 313933 Logging Results: Accounting information was written to the local log file. Reason Code: 16 Reason: Authentication failed due to a user credentials mismatch. Either the user name provided does not map to an existing user account or the password was incorrect.

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• Using "offline files sync" to sync with a local resource [closed]

  - by Kije

  Possible Duplicate: Which is the best application to Sync two folders? I have been trying get my machine (XP-Pro SP3) to sync files to a local USB drive in the same way as I can with mapped network drives. I particularly want to the sync to happen automatically when the USB is connected - in the same way that Off-line files will sync when the network drive comes on line. I can get a folder on the USB mounted as a network drive, but cannot get XP to offer the off-line files functionality. I have tried MS's SyncToy - it works as advertised, and will do scheduled and ad-hoc sync's, but does not seem to offer automatic syncs. I suspect I could do this by plugging my USB into another machine on my network - but that seems heavy handed. All insight appreciated - If you know this cannot be done please say so.

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• Double default gateway ubuntu server

  - by Elena

  Hi, I've just installed an Ubuntu server 9.10 on an EEEBox. This is my /etc/network/interfaces # The loopback network interface auto lo iface lo inet loopback auto wlan0 iface wlan0 inet static address 192.168.48.16 netmask 255.255.248.0 wireless-essid mynet auto eth0 iface eth0 inet static address xx.xx.xx.xx netmask 255.255.255.224 gateway xx.xx.yy.yy When I restart /etc/init.d/networking, I can access the eth0 ip address from the internet and I can ping the machines in my wifi network mynet. Everything works fine and I have one default gateway. But after some time if I check again the route I just find two default gateways: one is correct and is the previous one, but the other is the one of the wifi network. I have a quite low signal of mynet where my server is and sometimes the wifi just disconnect and then reconnect again. Then I think that this can be a problem and the dhcp of the wifi net, when reconnecting it also add a default gateway. Any idea on how to resolve this issue?

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• Passthrough Objects – Duck Typing++

  - by EltonStoneman

  [Source: http://geekswithblogs.net/EltonStoneman] Can't see a genuine use for this, but I got the idea in my head and wanted to work it through. It's an extension to the idea of duck typing, for scenarios where types have similar behaviour, but implemented in differently-named members. So you may have a set of objects you want to treat as an interface, which don't implement the interface explicitly, and don't have the same member names so they can't be duck-typed into implicitly implementing the interface. In a fictitious example, I want to call Get on whichever ICache implementation is current, and have the call passed through to the relevant method – whether it's called Read, Retrieve or whatever: A sample implementation is up on github here: PassthroughSample. This uses Castle's DynamicProxy behind the scenes in the same way as my duck typing sample, but allows you to configure the passthrough to specify how the inner (implementation) and outer (interface) members are mapped:       var setup = new Passthrough();     var cache = setup.Create("PassthroughSample.Tests.Stubs.AspNetCache, PassthroughSample.Tests")                             .WithPassthrough("Name", "CacheName")                             .WithPassthrough("Get", "Retrieve")                             .WithPassthrough("Set", "Insert")                             .As<ICache>(); - or using some ugly Lambdas to avoid the strings :     Expression<Func<ICache, string, object>> get = (o, s) => o.Get(s);     Expression<Func<Memcached, string, object>> read = (i, s) => i.Read(s);     Expression<Action<ICache, string, object>> set = (o, s, obj) => o.Set(s, obj);     Expression<Action<Memcached, string, object>> insert = (i, s, obj) => i.Put(s, obj);       ICache cache = new Passthrough<ICache, Memcached>()                     .Create()                     .WithPassthrough(o => o.Name, i => i.InstanceName)                     .WithPassthrough(get, read)                     .WithPassthrough(set, insert)                     .As();   - or even in config:   ICache cache = Passthrough.GetConfigured<ICache>(); ...  <passthrough>     <types>       <typename="PassthroughSample.Tests.Stubs.ICache, PassthroughSample.Tests"             passesThroughTo="PassthroughSample.Tests.Stubs.AppFabricCache, PassthroughSample.Tests">         <members>           <membername="Name"passesThroughTo="RegionName"/>           <membername="Get"passesThroughTo="Out"/>           <membername="Set"passesThroughTo="In"/>         </members>       </type>   Possibly useful for injecting stubs for dependencies in tests, when your application code isn't using an IoC container. Possibly it also has an alternative implementation using .NET 4.0 dynamic objects, rather than the dynamic proxy.

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• Discount Codes Galore

  - by Cassandra Clark

  Saving money is at the top of everyones list right now. With this in mind the Oracle Technology Network team has compiled a list of discounts available at the Oracle Store. We are also introducing an Oracle Technology Network member discount from O'Reilly Media. If you subscribe to any of the Oracle Technology newsletters you also saw special discounts from CRC Press, Packt Publishing and Apress. We are going to do our best to bring you more offers like this every month. Now on to the discounts... Oracle Store offers - all below expiring May 31st 2010. Don't miss out! Expand Your Productivity with Oracle Open Office and Save 15%? Enter OTNOffice at checkout. Buy Now! Drive Business Agility and Performance with Industry-leading Oracle Database Management Packs.  Save 10% when you purchase them at the Oracle Store. Enter OTNDBMP at checkout. Buy Now! 15% Savings on Oracle Virtualization and Unbreakable Linux Support at the Oracle Store Enter code OTNLinuxVM at checkout. Buy Now! 20% Savings on Oracle SQL Developer Data Modeler Use OTNSQL at checkout. Buy Now! O'Reilly Oracle Technology Network Member Offer O'Reilly is generously offering Oracle Technology Network Members 35% off for print books and 40% off of eBooks. Browse Oracle titles at- http://oreilly.com/pub/topic/oracle. Use discount code TECNT at checkout.

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• ISA 2006 refuses VPN DHCP requests as spoofing

  - by Daniel

  I'm running ISA 2006 with PPTP VPN for my AD-controlled network. DHCP is located on the ISA server itself and authentication is done by RADIUS (NPS) located on the DC. Right now my VPN clients can connect, access local DNS, and can ping ISA, the DC, and other clients. Here's where it gets weird. I noticed that despite all this, ipconfig shows the following: PPP adapter North Horizon VPN: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : North Horizon VPN Physical Address. . . . . . . . . : DHCP Enabled. . . . . . . . . . . : No Autoconfiguration Enabled . . . . : Yes IPv4 Address. . . . . . . . . . . : 10.42.4.7(Preferred) Subnet Mask . . . . . . . . . . . : 255.255.255.255 Default Gateway . . . . . . . . . : 0.0.0.0 DNS Servers . . . . . . . . . . . : 10.42.1.10 NetBIOS over Tcpip. . . . . . . . : Enabled So I went over and checked my ISA logs for both DHCP requests and replies, only to find out that my VPN clients are being denied because ISA thinks its a spoof. Here's some relevant information from the log (the VPN subnet is 10.42.4.0/24): Client IP: 10.42.4.6 Destination: 255.255.255.255:67 Client Username: (blank) Protocol: DHCP (request) Action: Denied Connection Rule: (blank) Source Network: VPN Clients Destination Network: Local Host Result Code: 0xc0040014 FWX_E_FWE_SPOOFING_PACKET_DROPPED Network Interface: 10.42.4.11 --------------------------------------------------------- Original Client IP: 10.42.4.6 Destination: 10.42.1.1 Client Username: (valid user) Protocol: PING Action: Initiated Connection Rule: Allow PING to ISA Source Network: VPN Clients Destination Network: Local Host Result Code: 0x0 ERROR_SUCCESS Network Interface: (blank) I wasn't sure what this 10.42.4.11 network interface was - it certainly wasn't something I had setup - untill I saw it in Routing and Remote Access under IP Routing General as an interface called "Internal" bound to the same IP address. I also noticed that since ISA takes blocks of 10 IP addresses from DHCP for VPN, it had reserved 10.42.4.2-11. I'm not sure if it means anything, though. Thanks for your help.

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• Assistance in setting up new APC Smart-UPS RT on a new VMware enviroment

  - by user38085

  I'm new to the realm of setting up a APC Smart-UPS RT 8000VA UPS with a management network card (AP9618). The project calls for the upgrade of the firmware for the network card to the newest and greatest. It also calls for the Powerchute Business Software to be installed with notifications setup per email for temperature, shutdown, and battery low. I know I'll have to use the serial cable to flash the firmware and install the software on one server 2003 box. Also on that server I'll have to install the software and setup the GUI (IP address) interface. Whats confusing the most is the whole process, and steps to use without taking down the network, which would be very bad. In flashing the firmware does it take down the UPS? Do i have to run BOOTP commands to setup the network card? Also no agents will be used on any of the VWware OS's and no SNMP trap will be used.

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• Realtek drivers for Redhat Linux

  - by kv

  Can any one provide link to: RedHat Linux realteak 8168C Network Drivers Zenith

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• Keep Oracle VM 3 Up to Date

  - by Honglin Su

  More and more customers turn to Oracle VM 3 to virtualize their enterprise applications. Oracle VM support subscription is an integrated part of their successes. Customers enjoy the benefit of the industry-leading global support 24x7 for their server virtualization implementation, and receive access to patches, fixes, and updates via Unbreakable Linux Network (ULN). For customers running Oracle systems, Oracle VM support is included in Oracle Premium Support for Systems at no extra cost, and customers receive comprehensive systems coverage that includes single point accountability for Oracle server and storage hardware; integrated software (for example, firmware); and operating system software (Oracle Solaris, Oracle Linux, and Oracle VM). To run a successful virtualization infrastructure, it's important to keep Oracle VM 3 environment up to date by leveraging Oracle VM support resources.  Oracle VM Server Updates: You can easily upgrade Oracle VM Server using a Yum repository. You can download the latest server patch updates from ULN. To receive notification on the software update delivered to Oracle ULN for Oracle VM, you can sign up here. For information on setting up an Oracle VM Server Yum repository and using Oracle VM Manager to perform the upgrade of Oracle VM Servers, see Updating and Upgrading Oracle VM Servers in the Oracle VM User's Guide .  Oracle VM Manager Updates: Get the download instructions at OTN, and apply latest Oracle VM Manager patch. Be sure to review the patch README before you apply the patches. Support customers have access to extremely valuable knowledge notes from My Oracle Support. They are the first to receive useful tips to help address issues in Oracle VM deployments. For example, Upgrade to Oracle VM 3.1.1 using Yum Repository may cause network configuration scripts to be renamed causing network failure after reboot (Doc ID 1464126.1) Oracle VM server reboots after network becomes unresponsive due to deep C-State power management setting (Doc ID 1440197.1) For more information about Oracle's virtualization, visit oracle.com/virtualization.

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• Office 2010 Professionl Plus Trial - Product Activation Fails

  - by Think Floyd

  I have installed Office 2010 Professional Plus Beta trial (x64 version) from MSFT site. Every thing worked fine initially. But after I rebooted machine (Win7 x64), and started Outlook 2010, i see an error dialog that I am not in a "corporate network" and the product could not be activated. I am not in a corporate network. I would like to use Office 2010 on my home network. How do I get around the Product Activation issue?

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• Windows Server 2008R2 - can't change or remove the default gateway

  - by disserman

  We've installed VMWare Server 2.0 on Windows 2008R2. After some time playing with it (actually only removing host-only and nat networks, and binding adapters to the specified vmnets) we've noticed a strange problem: if you change or remove the default gateway on the network card, the server completely loses a network connection you can't ping it from the subnet, it also can't connect to anyone. When the gateway is removed and a server tries to connect to the other machines, I can see some incoming packets using a sniffer, but I believe they are damaged in some kind (I'm not a mega-guru in TCP/IP and can't find a mistake in a binary translation of the packet) because the other side doesn't respond. What we tried: removed vmware server using add/remove programs deleted everything related to the vmware server and all installed network adapters in the windows registry double checked for the vmware bridged protocol driver file, it's physically absent and no any links in the registry. performed a tcp/ip reset with netsh and disabled/enabled all network adapters in the device manager to recreate a registry keys for them. tried another network adapter. and the situation is the same: as soon you remove or change the default gateway, windows stops working. The total absurd of the situation is that the default gateway points to the non-existing IP. But when it's set, you can ping a server from the subnet, when you remove it - you can't. Any help? I'm starting thinking the new build of the VMWare Server is some kind of the malware... :)

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• IPCop Packet Mangling

  - by Zenham

  I've found myself in a pickle replacing an old firewall for a client this afternoon. I'm configuring their new IPCop firewall (1.4.21), Zerina OpenVPN addon is installed. What I need to do: There are three network interfaces, currently set up as red (WAN), green (LAN, 192.168.20.0/24) and orange (remote network 10.1.20.0/24). The orange interface is a direct fiber link to another organization. Simple description: Traffic and networks appear to be properly configured at this point, but I have many (150+) specific IPs on the LAN which, when accessing the resources on the 10.1.20.x network, need to be mangled to appear to be coming from the 10.1.20.0/24 network (and return traffic properly delivered). The routing on the far side was configured earlier and should be fine, but I need to redirect any packets coming across destined for those IPs to end up at their proper destination. The addressing is fixed and predictable (ie. 192.168.20.125 - 10.1.20.125). I need to insert whatever rules I have into the IPCop ruleset through /etc/rc.local I know, I'm just not sure about how I should structure this. There's CUSTOMOUTPUT and CUSTOMINPUT targets, both which currently just consist of the single rule redirecting packets to the OVPNOUTPUT/OVPNINPUT targets, so I'm guessing I should insert a rule matching outbound packets destined for the 10.1.20.x network and redirecting to a new target (maybe called TO-ORANGE) and a rule at the top of CUSTOMINPUT which redirects to a FROM-ORANGE target. Under those targets, I would have rules which do the IP matching and mangling. Am I approaching this right? If so, I'm not very familiar with mangle, and would appreciate seeing examples of how to write that source-IP rewrite. If not, how would you suggest doing this? TIA! edit: I notice additionally that the nat table has CUSTOMPREROUTING and CUSTOMPOSTROUTING targets, I guess I could alternatively post the rules in there....

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• How to ping virtualbox guest machine by hostname?

  - by Punit Soni

  Here is the summary. VirtualBox 4.2.18 Host OS: Windows 7 Guest OS: Ubuntu 12.04 Networking: Bridged Adaptor I can ping Host and other machines in host's network from ubuntu guest using hostnames. But, I can only ping the guest machine using IP address from host and network machines. I have avahi-daemon running on Guest OS. I want to be able to ping/ssh the guest machine from host and other machines on network using hostname of the guest machine. Please help.

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• Is there a way to tell what the download speed is from a site/server

  - by Memor-X

  i'm looking into which ISP i should go with at the place i'm moving into, one ISP which i have been told good things about has data limits (which when breached will drop your speed to dial-up speed) but multiple memberships which, apart from the cheapest membership, have the same data limits (the cheapest has a 10GB data limit) in their fine print, they say that each different membership has different port speeds, one particular part jumps out at me These speeds are the NBN (National Broadband Network) port speed and not the actual Internet data speed which will vary based on numerous factors including destination you are reaching, your network equipment, network congestion etc. i plan to use the net to download DLC and patch updates for games (particular the insanely large update for the Wii U) and games from Steam (if i find any good one other than this one JRPG) and downloading development resources from free sites like Deposit Files and Mediafire since one membership with a 1000GB data limit is $145 with the port speed being 12Mbps/1Mbps (cheapest) while another with the same limit is $190 with the port speed of 100Mbps/40Mbps (expensive) i am wondering how i can tell what the speed coming from site is since i don't want to be wasting money on speed that makes no difference (unlike memory which i rather have to spare) NOTE: the speeds are for a fiber optic network which where my new place is can only connect via fixed wireless which i may not be able to get with this ISP but if i can get this network then good NOTE 2: most of the resources i get from Deposit Files are always about 200 MB or less, if a resource pack is greater then it's split into multiple archives (like .7z.part) while Mediafire i have to see one bigger than 150MB NOTE 3: one update patch for a PS3 game is close to 4 GB (Disgaea 4) which i need to get access to the DLC and on the weekend i downloaded 5 GB for the Final Fantasy XIV Open Beta for the PS3 which took almost 5 hours

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• Useful Command-line Commands on Windows

  - by Sung Meister

  The aim for this Wiki is to promote using a command to open up commonly used applications without having to go through many mouse clicks - thus saving time on monitoring and troubleshooting Windows machines. Answer entries need to specify Application name Commands Screenshot (Optional) Shortcut to commands && - Command Chaining %SYSTEMROOT%\System32\rcimlby.exe -LaunchRA - Remote Assistance (Windows XP) appwiz.cpl - Programs and Features (Formerly Known as "Add or Remove Programs") appwiz.cpl @,2 - Turn Windows Features On and Off (Add/Remove Windows Components pane) arp - Displays and modifies the IP-to-Physical address translation tables used by address resolution protocol (ARP) at - Schedule tasks either locally or remotely without using Scheduled Tasks bootsect.exe - Updates the master boot code for hard disk partitions to switch between BOOTMGR and NTLDR cacls - Change Access Control List (ACL) permissions on a directory, its subcontents, or files calc - Calculator chkdsk - Check/Fix the disk surface for physical errors or bad sectors cipher - Displays or alters the encryption of directories [files] on NTFS partitions cleanmgr.exe - Disk Cleanup clip - Redirects output of command line tools to the Windows clipboard cls - clear the command line screen cmd /k - Run command with command extensions enabled color - Sets the default console foreground and background colors in console command.com - Default Operating System Shell compmgmt.msc - Computer Management control.exe /name Microsoft.NetworkAndSharingCenter - Network and Sharing Center control keyboard - Keyboard Properties control mouse(or main.cpl) - Mouse Properties control sysdm.cpl,@0,3 - Advanced Tab of the System Properties dialog control userpasswords2 - Opens the classic User Accounts dialog desk.cpl - opens the display properties devmgmt.msc - Device Manager diskmgmt.msc - Disk Management diskpart - Disk management from the command line dsa.msc - Opens active directory users and computers dsquery - Finds any objects in the directory according to criteria dxdiag - DirectX Diagnostic Tool eventvwr - Windows Event Log (Event Viewer) explorer . - Open explorer with the current folder selected. explorer /e, . - Open explorer, with folder tree, with current folder selected. F7 - View command history find - Searches for a text string in a file or files findstr - Find a string in a file firewall.cpl - Opens the Windows Firewall settings fsmgmt.msc - Shared Folders fsutil - Perform tasks related to FAT and NTFS file systems ftp - Transfers files to and from a computer running an FTP server service getmac - Shows the mac address(es) of your network adapter(s) gpedit.msc - Group Policy Editor gpresult - Displays the Resultant Set of Policy (RSoP) information for a target user and computer httpcfg.exe - HTTP Configuration Utility iisreset - To restart IIS InetMgr.exe - Internet Information Services (IIS) Manager 7 InetMgr6.exe - Internet Information Services (IIS) Manager 6 intl.cpl - Regional and Language Options ipconfig - Internet protocol configuration lusrmgr.msc - Local Users and Groups Administrator msconfig - System Configuration notepad - Notepad? ;) mmsys.cpl - Sound/Recording/Playback properties mode - Configure system devices more - Displays one screen of output at a time mrt - Microsoft Windows Malicious Software Removal Tool mstsc.exe - Remote Desktop Connection nbstat - displays protocol statistics and current TCP/IP connections using NBT ncpa.cpl - Network Connections netsh - Display or modify the network configuration of a computer that is currently running netstat - Network Statistics net statistics - Check computer up time net stop - Stops a running service. net use - Connects a computer to or disconnects a computer from a shared resource, or displays information about computer connections odbcad32.exe - ODBC Data Source Administrator pathping - A traceroute that collects detailed packet loss stats perfmon - Opens Reliability and Performance Monitor ping - Determine whether a remote computer is accessible over the network powercfg.cpl - Power management control panel applet quser - Display information about user sessions on a terminal server qwinsta - See disconnected remote desktop sessions reg.exe - Console Registry Tool for Windows regedit - Registry Editor rasdial - Connects to a VPN or a dialup network robocopy - Backup/Restore/Copy large amounts of files reliably rsop.msc - Resultant Set of Policy (shows the combined effect of all group policies active on the current system/login) runas - Run specific tools and programs with different permissions than the user's current logon provides sc - Manage anything you want to do with services. schtasks - Enables an administrator to create, delete, query, change, run and end scheduled tasks on a local or remote system. secpol.msc - Local Security Settings services.msc - Services control panel set - Displays, sets, or removes cmd.exe environment variables. set DIRCMD - Preset dir parameter in cmd.exe start - Starts a separate window to run a specified program or command start. - opens the current directory in the Windows Explorer. shutdown.exe - Shutdown or Reboot a local/remote machine subst.exe - Associates a path with a drive letter, including local drives systeminfo -Displays a comprehensive information about the system taskkill - terminate tasks by process id (PID) or image name tasklist.exe - List Processes on local or a remote machine taskmgr.exe - Task Manager telephon.cpl - Telephone and Modem properties timedate.cpl - Date and Time title - Change the title of the CMD window you have open tracert - Trace route wmic - Windows Management Instrumentation Command-line winver.exe - Find Windows Version wscui.cpl - Windows Security Center wuauclt.exe - Windows Update AutoUpdate Client

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• Permanently change IP address on SuSE 10

  - by Long Ngo

  I am trying to change IP address of a SuSE 10 machine that is running Tomcat. I need to create a shell script to do this so could not use YaST. As some sites suggested on my Google search, I edited the files in /etc/sysconfig/network/ifcfg-eth-* to change the IP address. After that, I restarted the network service by calling /etc/init.d/network restart. The network card restarting just fine. I, then, restarted tomcat web service. However, when I browsed the new IP address using browser, I got an "Request denied" message. Can anyone please tell me how I could do this? Thanks

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• A simple Dynamic Proxy

  - by Abhijeet Patel

  Frameworks such as EF4 and MOQ do what most developers consider "dark magic". For instance in EF4, when you use a POCO for an entity you can opt-in to get behaviors such as "lazy-loading" and "change tracking" at runtime merely by ensuring that your type has the following characteristics: The class must be public and not sealed. The class must have a public or protected parameter-less constructor. The class must have public or protected properties Adhere to this and your type is magically endowed with these behaviors without any additional programming on your part. Behind the scenes the framework subclasses your type at runtime and creates a "dynamic proxy" which has these additional behaviors and when you navigate properties of your POCO, the framework replaces the POCO type with derived type instances. The MOQ framework does simlar magic. Let's say you have a simple interface:   public interface IFoo      {          int GetNum();      }   We can verify that the GetNum() was invoked on a mock like so:   var mock = new Mock<IFoo>(MockBehavior.Default);   mock.Setup(f => f.GetNum());   var num = mock.Object.GetNum();   mock.Verify(f => f.GetNum());   Beind the scenes the MOQ framework is generating a dynamic proxy by implementing IFoo at runtime. the call to moq.Object returns the dynamic proxy on which we then call "GetNum" and then verify that this method was invoked. No dark magic at all, just clever programming is what's going on here, just not visible and hence appears magical! Let's create a simple dynamic proxy generator which accepts an interface type and dynamically creates a proxy implementing the interface type specified at runtime.     public static class DynamicProxyGenerator   {       public static T GetInstanceFor<T>()       {           Type typeOfT = typeof(T);           var methodInfos = typeOfT.GetMethods();           AssemblyName assName = new AssemblyName("testAssembly");           var assBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assName, AssemblyBuilderAccess.RunAndSave);           var moduleBuilder = assBuilder.DefineDynamicModule("testModule", "test.dll");           var typeBuilder = moduleBuilder.DefineType(typeOfT.Name + "Proxy", TypeAttributes.Public);              typeBuilder.AddInterfaceImplementation(typeOfT);           var ctorBuilder = typeBuilder.DefineConstructor(                     MethodAttributes.Public,                     CallingConventions.Standard,                     new Type[] { });           var ilGenerator = ctorBuilder.GetILGenerator();           ilGenerator.EmitWriteLine("Creating Proxy instance");           ilGenerator.Emit(OpCodes.Ret);           foreach (var methodInfo in methodInfos)           {               var methodBuilder = typeBuilder.DefineMethod(                   methodInfo.Name,                   MethodAttributes.Public | MethodAttributes.Virtual,                   methodInfo.ReturnType,                   methodInfo.GetParameters().Select(p => p.GetType()).ToArray()                   );               var methodILGen = methodBuilder.GetILGenerator();               methodILGen.EmitWriteLine("I'm a proxy");               if (methodInfo.ReturnType == typeof(void))               {                   methodILGen.Emit(OpCodes.Ret);               }               else               {                   if (methodInfo.ReturnType.IsValueType || methodInfo.ReturnType.IsEnum)                   {                       MethodInfo getMethod = typeof(Activator).GetMethod(/span>"CreateInstance",new Type[]{typeof((Type)});                                               LocalBuilder lb = methodILGen.DeclareLocal(methodInfo.ReturnType);                       methodILGen.Emit(OpCodes.Ldtoken, lb.LocalType);                       methodILGen.Emit(OpCodes.Call, typeofype).GetMethod("GetTypeFromHandle"));  ));                       methodILGen.Emit(OpCodes.Callvirt, getMethod);                       methodILGen.Emit(OpCodes.Unbox_Any, lb.LocalType);                                                              }                 else                   {                       methodILGen.Emit(OpCodes.Ldnull);                   }                   methodILGen.Emit(OpCodes.Ret);               }               typeBuilder.DefineMethodOverride(methodBuilder, methodInfo);           }                     Type constructedType = typeBuilder.CreateType();           var instance = Activator.CreateInstance(constructedType);           return (T)instance;       }   }   Dynamic proxies are created by calling into the following main types: AssemblyBuilder, TypeBuilder, Modulebuilder and ILGenerator. These types enable dynamically creating an assembly and emitting .NET modules and types in that assembly, all using IL instructions. Let's break down the code above a bit and examine it piece by piece                Type typeOfT = typeof(T);              var methodInfos = typeOfT.GetMethods();              AssemblyName assName = new AssemblyName("testAssembly");              var assBuilder = AppDomain.CurrentDomain.DefineDynamicAssembly(assName, AssemblyBuilderAccess.RunAndSave);              var moduleBuilder = assBuilder.DefineDynamicModule("testModule", "test.dll");              var typeBuilder = moduleBuilder.DefineType(typeOfT.Name + "Proxy", TypeAttributes.Public);   We are instructing the runtime to create an assembly caled "test.dll"and in this assembly we then emit a new module called "testModule". We then emit a new type definition of name "typeName"Proxy into this new module. This is the definition for the "dynamic proxy" for type T                 typeBuilder.AddInterfaceImplementation(typeOfT);               var ctorBuilder = typeBuilder.DefineConstructor(                         MethodAttributes.Public,                         CallingConventions.Standard,                         new Type[] { });               var ilGenerator = ctorBuilder.GetILGenerator();               ilGenerator.EmitWriteLine("Creating Proxy instance");               ilGenerator.Emit(OpCodes.Ret);   The newly created type implements type T and defines a default parameterless constructor in which we emit a call to Console.WriteLine. This call is not necessary but we do this so that we can see first hand that when the proxy is constructed, when our default constructor is invoked.   var methodBuilder = typeBuilder.DefineMethod(                      methodInfo.Name,                      MethodAttributes.Public | MethodAttributes.Virtual,                      methodInfo.ReturnType,                      methodInfo.GetParameters().Select(p => p.GetType()).ToArray()                      );   We then iterate over each method declared on type T and add a method definition of the same name into our "dynamic proxy" definition     if (methodInfo.ReturnType == typeof(void))   {       methodILGen.Emit(OpCodes.Ret);   }   If the return type specified in the method declaration of T is void we simply return.     if (methodInfo.ReturnType.IsValueType || methodInfo.ReturnType.IsEnum)   {                               MethodInfo getMethod = typeof(Activator).GetMethod("CreateInstance",                                                         new Type[]{typeof(Type)});                               LocalBuilder lb = methodILGen.DeclareLocal(methodInfo.ReturnType);                                                     methodILGen.Emit(OpCodes.Ldtoken, lb.LocalType);       methodILGen.Emit(OpCodes.Call, typeof(Type).GetMethod("GetTypeFromHandle"));       methodILGen.Emit(OpCodes.Callvirt, getMethod);       methodILGen.Emit(OpCodes.Unbox_Any, lb.LocalType);   }   If the return type in the method declaration of T is either a value type or an enum, then we need to create an instance of the value type and return that instance the caller. In order to accomplish that we need to do the following: 1) Get a handle to the Activator.CreateInstance method 2) Declare a local variable which represents the Type of the return type(i.e the type object of the return type) specified on the method declaration of T(obtained from the MethodInfo) and push this Type object onto the evaluation stack. In reality a RuntimeTypeHandle is what is pushed onto the stack. 3) Invoke the "GetTypeFromHandle" method(a static method in the Type class) passing in the RuntimeTypeHandle pushed onto the stack previously as an argument, the result of this invocation is a Type object (representing the method's return type) which is pushed onto the top of the evaluation stack. 4) Invoke Activator.CreateInstance passing in the Type object from step 3, the result of this invocation is an instance of the value type boxed as a reference type and pushed onto the top of the evaluation stack. 5) Unbox the result and place it into the local variable of the return type defined in step 2   methodILGen.Emit(OpCodes.Ldnull);   If the return type is a reference type then we just load a null onto the evaluation stack   methodILGen.Emit(OpCodes.Ret);   Emit a a return statement to return whatever is on top of the evaluation stack(null or an instance of a value type) back to the caller     Type constructedType = typeBuilder.CreateType();   var instance = Activator.CreateInstance(constructedType);   return (T)instance;   Now that we have a definition of the "dynamic proxy" implementing all the methods declared on T, we can now create an instance of the proxy type and return that out typed as T. The caller can now invoke the generator and request a dynamic proxy for any type T. In our example when the client invokes GetNum() we get back "0". Lets add a new method on the interface called DayOfWeek GetDay()   public interface IFoo      {          int GetNum();          DayOfWeek GetDay();      }   When GetDay() is invoked, the "dynamic proxy" returns "Sunday" since that is the default value for the DayOfWeek enum This is a very trivial example of dynammic proxies, frameworks like MOQ have a way more sophisticated implementation of this paradigm where in you can instruct the framework to create proxies which return specified values for a method implementation.

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• eth0 and eth1 both assigned same IP on boot

  - by Banjer

  I have a physical SLES 11 SP2 server on a Sun Fire x4140 that is giving me problems with networking upon reboot. The NICs are onboard. The networking appears successful during boot, but network services such as nfs fail hard. This is because eth0 and eth1 are both receiving the same configuration and are both ifup-ed. Once everything times out and I'm at the console, ifconfig shows that eth0 and eth1 are UP and running with the same IP. Attempting to ping anything in that subnet fails. Restarting the network service fixes the issue. eth0 is the correct NIC that should be configured as primary, per the MAC address. Question: Whats causing eth1 to be brought up with the same config as eth0?? I do not have a config script set up for eth1: banjer@harp:~> ls -la /etc/sysconfig/network/ total 104 drwxr-xr-x 6 root root 4096 Jun 11 12:21 . drwxr-xr-x 6 root root 4096 Apr 10 09:46 .. -rw-r--r-- 1 root root 13916 Apr 10 09:32 config -rw-r--r-- 1 root root 9952 Apr 10 09:36 dhcp -rw------- 1 root root 180 Jun 11 12:21 ifcfg-eth0 -rw------- 1 root root 180 Jun 11 12:21 ifcfg-eth3 -rw------- 1 root root 172 Feb 1 08:32 ifcfg-lo -rw-r--r-- 1 root root 29333 Feb 1 08:32 ifcfg.template drwxr-xr-x 2 root root 4096 Apr 10 09:32 if-down.d -rw-r--r-- 1 root root 239 Feb 1 08:32 ifroute-lo drwxr-xr-x 2 root root 4096 Apr 10 09:33 if-up.d drwx------ 2 root root 4096 May 5 2010 providers -rw-r--r-- 1 root root 25 Nov 16 2010 routes drwxr-xr-x 2 root root 4096 Apr 10 09:36 scripts On a side note, eth3 is also configured with an IP in a different subnet, but this has not posed any problems. FYI the kernel module being used is forcedeth. banjer@harp:~> sudo cat /etc/sysconfig/network/ifcfg-eth0 BOOTPROTO='static' BROADCAST='' ETHTOOL_OPTIONS='' IPADDR='172.21.64.25/20' MTU='' NAME='MCP55 Ethernet' NETWORK='' REMOTE_IPADDR='' STARTMODE='auto' USERCONTROL='no' ONBOOT="yes" Here's eth3 in case you need to see it: banjer@harp:~> sudo cat /etc/sysconfig/network/ifcfg-eth3 BOOTPROTO='static' BROADCAST='' ETHTOOL_OPTIONS='' IPADDR='172.11.200.4/24' MTU='' NAME='MCP55 Ethernet' NETWORK='' REMOTE_IPADDR='' STARTMODE='auto' USERCONTROL='no' ONBOOT="yes" Perhaps is something related to udev? 70-persistent-net-rules looks OK to me, but I may not understand it completely. banjer@harp:~> cat /etc/udev/rules.d/70-persistent-net.rules # This file was automatically generated by the /lib/udev/write_net_rules # program, run by the persistent-net-generator.rules rules file. # # You can modify it, as long as you keep each rule on a single # line, and change only the value of the NAME= key. # PCI device 0x10de:0x0373 (forcedeth) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:18:4f:8d:85:4c", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2" # PCI device 0x10de:0x0373 (forcedeth) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:18:4f:8d:85:4a", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0" # PCI device 0x10de:0x0373 (forcedeth) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:18:4f:8d:85:4b", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1" # PCI device 0x10de:0x0373 (forcedeth) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:18:4f:8d:85:4d", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth3" # PCI device 0x1077:0x3032 (qla3xxx) SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:c1:dd:0e:34:6c", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth4" Any other thoughts on what would cause this?

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