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  • Can ISC dhcpd operate as a proxy dhcp server for PXE boot?

    - by Matt
    I have an existing LAN with a DHCP server already dishing out IP addresses. For various reasons I cannot replace that server so it will still need to dish out IP addresses. I've been experimenting with dnsmasq in proxy mode to provide PXE boot filenames. Now I have dnsmasq chainloading iPXE ok, but I found that the problem with dnsmasq is that in proxy mode it won't send dhcp options down. So I can't seem to send option 17 to boot iscsi san. I read somewhere that it's not enabled in the source code. Oh well, so I thought perhaps I should try isc dhcpd (default version4 with ubuntu). But I can't find any configuration examples that work as a proxy. Does isc dhcpd even work in proxy mode? examples on the web imply patching the source. What other options do I have?

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  • Apache error_log repeated attempts to access forum.php

    - by bMon
    About every two seconds I am getting: [Sat Feb 19 19:00:01 2011] [error] [client 69.239.204.217] script '/var/www /html/forum.php' not found or unable to stat [Sat Feb 19 19:00:04 2011] [error] [client 69.239.204.217] File does not exist: /var/www/html/404.shtml ..in my /var/log/httpd/error_log file. Sometimes the request will be for forum_asp.php. I'm assuming its a bot trying to access insecure forum files, but I'm not so sure since it appears each is a unique IP and not just a few rouge IPs hitting it consecutively. And whois results of the ip's aren't all the classic ISP in Russia or China, they are more end user address (comcast, etc). Any insight into whats going on here would be appreciated. Also, any techniques people use to do a "live monitor" of web traffic would be appreciated. Right now I'm doing a: tail -f error_log Thanks.

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  • Isolating VMware virtual machines from the network

    - by jetboy
    I have: VMware Workstation 7 running on a Windows 7 box (with a single NIC), with multiple virtual machines running a range of OSs. The host box is connected to a WRT54G router running Tomato firmware. The router is acting as a wireless bridge to another WRT54G that's wired to my broadband modem. I can access the VMs externally via VNC using VMware's Remote Display. Over time I've had these running: a. Using NAT networking (single IP) with port forwarding on the router and a custom port in VMware for each VM. b. Using bridged networking with static IPs assigned to each VM via MAC address, and port forwarding on the router to each IP running with standard ports. Either way, the host box, and other physical machines on the network are accessible from the VMs. Is there a way to isolate the VMs from the rest of the network, but still maintain internet access and remote VNC to the VMs?

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  • windows 7 no internet access

    - by Kyle
    Just did a fresh install of Windows 7, and the network and sharing center says no internet access. Disabling and enabling the adapter seems to fix the issue temporarily, but the internet stops working shortly after. I have installed the latest NIC drivers and have installed all Windows updates. I have also tried manually setting the ip/gateway/dns and running netsh int ip reset in an elevated command prompt. I am running Windows 7 Home Premium 64bit with a wired connection. I have searched for hours, but have found no working solutions. Does anyone have any ideas?

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  • mac osx cannot connect to windows 7 machine

    - by Binary X
    I have a Mac OSX (Snow Leopard 10.6.6) setup on a network with several Windows 7 machines. When trying to place a large file on a Windows share the connection to the Windows share gets lost and I am unable to reconnect until I reboot the Mac. I know this is on the Windows side because the Mac can connect and transfer files to Server 2008 and XP without issue. Looking in the log file I see this message SharePointBrowser::handleOpenCallBack returned 12 I have tried restarting the com.apple.netauth.sysagent service but that did not resolve the situation. I can do an nslookup to the Windows 7 machine, but trying to ping the machine by hostname always gives a hostname lookup failure (I can ping via IP address). I cannot connect to the machine via IP adress either. Any help would be appreciated.

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  • Switch smarthosts in Exchange when using dual WAN

    - by mat0ng
    Hi everybody, I'd like to know if it's possible to setup Exchange 2003/2007 to switch between smarthosts, based on the WAN connection currently in use. Example scenario: I have two WAN connections with different ISP's. Exchange is running behind a dual WAN router. The router is setup to fall back to secondary WAN when primary WAN fails. The smarthost set in Exchange is the SMTP server of the primary ISP. Because the smarthost set in Exchange only allows relaying from IP's of the primary WAN sending mail won't work when the router falls back to the secondary WAN. Sending mail directly through DNS MX lookup is an option but the ISP's have dynamic IP's that get blacklisted a lot. Thanks in advance!

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  • Ubuntu web server 11.10 ftp/server issue

    - by Nate
    I was wondering if I could get some help with FTP, atleast I'm pretty sure it has to do with FTP. Although it could have to do with something else, I'm not 100% sure.. Now, for fare warning, I'm no ubuntu dominator, I'm pretty newb. Anyway, I've attempted to build a webserver to to test php and what not for a site I'm building. Now everything works, the php, the sql etc. By the way, I built this in VMware, so it's virtual, over a network, so I can access stuff from anywhere. I'm in a college right now so yeah. The one problem I have is this. I go into the terminal, and do ifconfig to find my IP. I get it and go to a browser on a different machine and type that IP in. I get the "index of/" page, where I can browse the website I'm making. I can click through folders and what not. I can click on things and they open up. Now lets say I'm working on my desktop and open up an FTP and drag and drop something into there, go to the IP in the browser again and try to open it. I either get "Server error The website encountered an error while retrieving http://my_server_ip/phpinfo.php. It may be down for maintenance or configured incorrectly. Here are some suggestions: Reload this webpage later." or "Forbidden You don't have permission to access /html.html on this server." But, lets say I make it on the server itself, and try, bam, magic it works. I'm sure I set the permissions to let everyone open and view the files, but maybe I didn't? I'm not sure, and this is where I was hoping I could get some help. By the way, I followed a tutorial on changing the www folder (apache) from /var/www to home/"user"/www. I can't recall how I did that, but it's there and my ftp goes to the home/"user"/www folder. But yeah, any and all help is appreciated. Like I said, I'm really new to this, but I do enjoy attempting to make these servers and learning how they work, so it's not like making this webserver is a project for a class, It's just assisting me in testing stuff for another class and possibly other websites later on down the road. Anyway, anyone who decides to help, thanks so much, I'd really appreciate it. Nate. P.S. I'm using Ubuntu 11.10 desktop edition with a LAMP server

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  • How to create tunnel to utilize for telnet connection.

    - by Z12
    The scenario is as follows: Machine A is located behind client firewall. The machine runs telnetd. This is Linux machine with Python 2.5.4 installed. I do not know the IP addy of the router and firewall is not open incoming. outgoing firewall is open. Machine B (Windows machine) is a server with well known IP address. I can install any programs I want on either machine. The idea is that I want Machine A to open a socket to machine B. Then I want to hold that socket and use to run a telnet session from Machine B to Machine A telnetd server. Is there any freeware that does this? Thoughts? Thanks!

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  • .htaccess to block by file name possible?

    - by Tiffany Walker
    I have a bunch of files that are secure_xxxxxx.php. Is there a way to use .htaccess to block access to all the secure_* php files based on IP? EDIT: I've tried but I get 500 errors <FilesMatch "^secure_.*\.php$"> order deny all deny from all allow from my ip here </FilesMatch> Don't see any errors in apache error logs either httpd -M Loaded Modules: core_module (static) authn_file_module (static) authn_default_module (static) authz_host_module (static) authz_groupfile_module (static) authz_user_module (static) authz_default_module (static) auth_basic_module (static) include_module (static) filter_module (static) log_config_module (static) logio_module (static) env_module (static) expires_module (static) headers_module (static) setenvif_module (static) version_module (static) proxy_module (static) proxy_connect_module (static) proxy_ftp_module (static) proxy_http_module (static) proxy_scgi_module (static) proxy_ajp_module (static) proxy_balancer_module (static) ssl_module (static) mpm_prefork_module (static) http_module (static) mime_module (static) dav_module (static) status_module (static) autoindex_module (static) asis_module (static) info_module (static) suexec_module (static) cgi_module (static) dav_fs_module (static) negotiation_module (static) dir_module (static) actions_module (static) userdir_module (static) alias_module (static) rewrite_module (static) so_module (static) fastinclude_module (shared) auth_passthrough_module (shared) bwlimited_module (shared) frontpage_module (shared) suphp_module (shared) Syntax OK

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  • What is needed to use anycast IPs?

    - by coredump
    So, there're a bunch of questions on SF about the uses and how anycast IPs are cool. My approach is something more practical. What specifically I need to have to use one of those addresses? Do I need to be an AS (Autonomous System)? If I want to use an Anycast IP on my internal network, is it possible? Do I need anything special with a registrar/operator(s) to use it? Basically, if I want to use an Anycast IP address, what exactly I need, from the equipment to configuration part.

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  • How to use suse linux as a small router

    - by Mingo
    I has 2 subnet 192.168.1.0/24 and 192.168.2.0/24 and one suse linux, the linux has 2 interface, eth0 and eth1. I want to configurate the suse linux as a router so that make these 2 subnet can communicate with each other. This is my steps: 1.set the linux eth0 ip as 192.160.1.254,eth1 ip 192.168.2.254 2.add route in linux: route add -net 192.168.1.0 netmask 255.255.255.0 dev eth0 route add -net 192.168.2.0 netmask 255.255.255.0 dev eth1 3.set 192.168.1.0/24 gw as 192.168.1.254,and 192.168.2.0/24 gw as 192.168.2.254 I am not sure this will work or not? or some step i missing?

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  • IIS7 failover cluster across datacenters

    - by Scott
    Hello, I have servers in two different datacenters with each datacenter getting static IPs. What I would like to do is setup the servers as IIS7 servers and allowing them to failover from datacenter to datacenter with little (or preferably) no interruption. Servers on both sides are running Windows Server 2008 x64 with IIS7 (or 7.5 if needed). I am interested in how to point DNS traffic to the new datacenter without manual human intervention. For example: Datacenter A: IP: 192.168.1.115 Servers: Server 2008 x64 w/ IIS 7 Datacenter B: IP: 192.168.1.220 Servers: Server 2008 x64 w/ IIS 7 Other information: Domain Name: Example.org Domain DNS: 192.168.1.115 If Datacenter A connectivity went down (broken service line, etc.) how does the traffic know to route to Datacenter B on 192.168.1.220? Thanks, Scott

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  • can't resolve host (A) but FQDN is fine

    - by user1431356
    I am getting inconsistent name resolution locally with DNS I have 3 2012 Standard servers and some weirdness on 1. It is a standard install with IIS role added. TEST01 is a dev server. 192.119.1.220 with a host header of TEST01. DATA01 runs internal DNS on .240 and all servers and clients point here for DNS. There is a forward in DNS to 192.119.1.1 (router) with ISP external DNS #s mapped. if I ping TEST01 from a non AD machine, it I get "Could not find Host TEST01" If I ping TEST01 from a domain machine(another server), it resolves the IP but does not respond. if I ping TEST01.AD.local, DNS resolves the IP, but times out. I can access IIS by entering http://test.WWWDOMAIN.com and I can RDP to it, just not ping. Any idea where I should start?

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  • LDAP query on linux against AD returns groups with no members

    - by SethG
    I am using LDAP+kerberos to authenticate against Active Directory on Windows 2003 R2. My krb5.conf and ldap.conf appear to be correct (according to pretty much every sample I found on the 'net). I can login to the host with both password and ssh keys. When I run getent passwd, all my ldap user accounts are listed with all the important attributes. When I run getent group, all the ldap groups and their gid's are listed, but no group members. If I run ldapsearch and filter on any group, the members are all listed with the "member" attribute. So the data is there for the taking, it's just not being parsed properly. It would appear that I simply am using an incorrect mapping in ldap.conf, but I can't see it. I've tried several variations and all give the same result. Here is my current ldap.conf: host <ad-host1-ip> <ad-host2-ip> base dc=my,dc=full,dc=dn uri ldap://<ad-host1> ldap://<ad-host2> ldap_version 3 binddn <mybinddn> bindpw <mybindpw> scope sub bind_policy hard nss_reconnect_tries 3 nss_reconnect_sleeptime 1 nss_reconnect_maxsleeptime 8 nss_reconnect_maxconntries 3 nss_map_objectclass posixAccount User nss_map_objectclass posixGroup Group nss_map_attribute uid sAMAccountName nss_map_attribute gidNumber msSFU30GidNumber nss_map_attribute uidNumber msSFU30UidNumber nss_map_attribute cn cn nss_map_attribute gecos displayName nss_map_attribute homeDirectory msSFU30HomeDirectory nss_map_attribute loginShell msSFU30LoginShell nss_map_attribute uniqueMember member pam_filter objectcategory=User pam_login_attribute sAMAccountName pam_member_attribute member pam_password ad Here's the kicker: this config works 100% fine on a different linux box with a different distro. It does not work on the distro I am planning on switching to. I have installed from source the versions of pam_ldap and nss_ldap on the new box to match the old box, which fixed another problem I was having with this setup. Other relevant info is the original AD box was Windows 2003. It's mirror died a horrible hardware death so I'm trying to add two more 2003-R2 servers to the mirror tree and ultimately drop the old 2003 box. The new R2 boxes appear to have joined the DC forest properly. What do I need to do to get groups working? I've exhausted all the resources I could find and need a different angle. Any input is appreciated. Status update, 7/31/09 I have managed to tweak my config file to get full info from the AD and performance is nice and snappy. I replaced the back-rev'd copies of pam_ldap and nss_ldap with the current ones for the distro I'm using, so it's back to a standard out-of-the-box install. Here's my current config: host <ad-host1-ip> <ad-host2-ip> base dc=my,dc=full,dc=dn uri ldap://<ad-host1> ldap://<ad-host2> ldap_version 3 binddn <mybinddn> bindpw <mybindpw> scope sub bind_policy soft nss_reconnect_tries 3 nss_reconnect_sleeptime 1 nss_reconnect_maxsleeptime 8 nss_reconnect_maxconntries 3 nss_connect_policy oneshot referrals no nss_map_objectclass posixAccount User nss_map_objectclass posixGroup Group nss_map_attribute uid sAMAccountName nss_map_attribute gidNumber msSFU30GidNumber nss_map_attribute uidNumber msSFU30UidNumber nss_map_attribute cn cn nss_map_attribute gecos displayName nss_map_attribute homeDirectory msSFU30HomeDirectory nss_map_attribute loginShell msSFU30LoginShell nss_map_attribute uniqueMember member pam_filter objectcategory=CN=Person,CN=Schema,CN=Configuration,DC=w2k,DC=cis,DC=ksu,DC=edu pam_login_attribute sAMAccountName pam_member_attribute member pam_password ad ssl off tls_checkpeer no sasl_secprops maxssf=0 The remaining problem now is when you run the groups command, not all subscribed groups are listed. Some are (one or two), but not all. Group memberships are still honored, such as file and printer access. getent group foo still shows that the user is a member of group foo. So it appears to be a presentation bug, and does not interfere with normal operation. It also appears that some (I have not determined exactly how many) group searches do not resolve correctly, even though the group is listed. eg, when you run "getent group bar", nothing is returned, but if you run "getent group|grep bar" or "getent group|grep <bar_gid>" you can see that it indeed listed and your group name and gid are correct. This still seems like an LDAP search or mapping error, but I can't figure out what it is. I'm a heckuva lot closer than earlier in the week, but I'd really like to get this last detail ironed out.

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  • DHCP Client Can't Find DHCP Server

    - by leeman24
    I currently have 3 machines: CentOS (router) eth1 - 18.0.168.1 eth2 - 145.165.34.1 Windows Server 2008 (server) 18.0.168.2 DHCP scope - 145.165.34.10 - 145.165.34.20 Windows 7 (client) Supposed to use DHCP I can't get my Windows 7 client to get an address from the Windows Server 2008 DHCP server. Every network interface can ping each other (ex. 18.0.168.2 can ping 18.0.168.1 & 145.165.34.1 and the other way around). My Linux machine acting as the router has default IP tables. Other than this command which may or may not be right: iptables -I INPUT -p udp -d 18.0.168.2 --dport 67:68 -j ACCEPT I have also tried it after I flushed the IP tables. I was looking at the dhcrelay command but it seems CentOS doesn't have it and I am not even sure how to use it.

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  • Assigning multiple IPv6 addresses on a Server

    - by andrewk
    Let me uncover my intent. My host provides hundreds of IPV6 addresses free, but charge for an IPV4 address. I have several sites under one server and I was wondering if I can give each site/domain it's own ipv6 address. Is that even possible? If so how? I've read quite a bit about ipv6 but I do not understand it as clear as I'd like. My main goal is, for each domain/site to have it's own unique IP, so someone can't do a reverse ip look up and see what sites I have on that server. Thanks in advance for the patience.

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  • Reverse DNS does not match SMTP banner vs Reverse DNS mismatch

    - by MadBoy
    I have to make decision whether my Reverse DNS should match SMTP banner but Reverse DNS to DNS and vice versa stays different or vice versa. Which one to choose? I have an 2x Exchange 2010 server with one SMTP Sender with TMG 2010. TMG has 2 links connected so that we have 2 separate internet providers. The problem is I have no way to control TMG behavior on which link is used to send emails as it picks it randomly. I have 2 MX records: - mail.test.com which resolves to IP and IP resolves to mail.test.com - mail2.test.com which resolves to IP2 and IP2 resolves to mail.test.com This was done to prevent smtp banner issues but it provides problems with Reverse DNS if the server on the other side is eager enough to do comparison. But I've checked with Google and they also don't have that in perfect condition.

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  • Virtual Network Interface and NAT disables localhost access for MySQL and Apache

    - by Interarticle
    I'm running an Ubuntu Server 12.04, and recently I configured it to do NAT for my laptop. Since the server has only one NIC, I followed instructions online to create a virtual network device (eth0:0) that has a LAN IP address, then further configured iptables and UFW to allow internet sharing. However, just a few days ago, I discovered that one of the PHP pages hosted on the server failed for no apparent reason. A little digging revealed that the MySQL server started refusing connections from localhost. The same happened with a page (PhpMyAdmin) that was configured to be accessible only from localhost (in Apache2). The error, as shown by $mysql --protocol=tcp -u root -p looks like ERROR 1130 (HY000): Host '<host name of eth0>' is not allowed to connect to this MySQL server However, the funny thing is, I configured the mysql server to allow root access from localhost (only). Moreover, the mysql server listens only on 127.0.0.1:3306, as shown by: sudo netstat -npa | head Active Internet connections (servers and established) Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name tcp 0 0 127.0.0.1:3306 0.0.0.0:* LISTEN 1029/mysqld which means that the connection could have only come from 127.0.0.1 (Note that MySQL is working because I can still connect to it via unix domain sockets) In effect, it seems that all tcp connections originating from 127.0.0.1 to 127.0.0.1 appear to any local daemon to come from the eth0 IP address. Indeed, apache2 allowed me to access PhpMyAdmin after I added allow <eth0 IP address>. The following are my network configurations (redacted): /etc/hosts: 127.0.0.1 localhost 211.x.x.x <host name of eth0> <server name> #IPv6 Defaults follows .... /etc/network/interfaces: auto lo iface lo inet loopback auto eth0 iface eth0 inet static address 211.x.x.x netmask 255.255.255.0 gateway 211.x.x.x dns-nameservers 8.8.8.8 # dns-* options are implemented by the resolvconf package, if installed dns-search xxxxxxx.com hwaddress ether xx:xx:xx:xx:xx:xx auto eth0:0 iface eth0:0 inet static address 192.168.57.254 netmask 255.255.254.0 broadcast 192.168.57.255 network 192.168.57.0 /etc/ufw/sysctl.conf: #Uncommented the following lines net/ipv4/ip_forward=1 net/ipv6/conf/default/forwarding=1 /etc/default/ufw: DEFAULT_FORWARD_POLICY="ACCEPT" #Changed DROP to ACCEPT /etc/init/internet-sharing.conf (upstart script I wrote), section pre-start script: iptables -A FORWARD -o eth0 -i eth0:0 -s 192.168.57.22 -m conntrack --ctstate NEW -j ACCEPT iptables -A FORWARD -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT iptables -A POSTROUTING -t nat -j MASQUERADE Note again that my problem here is that programs cannot access localhost tcp services, from the server itself, and that access is blocked because the services have access control allowing only 127.0.0.1. I have no problem connecting (as in TCP connections) to services via tcp, even if the services listen only on 127.0.0.1. I do NOT want to connect to the services from another computer.

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  • AT&T U-verse 2Wire Router - Increase session table limit?

    - by caleban
    AT&T U-verse VDSL "fiber to the node" 24Mbit down / 3Mbit up 2Wire Router Model 3800HGV-B Software Version 6.1.9.24-enh.tm The 2Wire router appears to have a limit of 1024 TCP and UDP sessions. This limit appears to apply to all sessions regardless of any static IP, firewall off, DMZ plus, secondary router configurations. I've tried using the 2Wire router alone and also configuring the 2Wire static IP addressing, firewall off, DMZ plus, etc. setup along with my own pfSense router/firewall. Either way it appears I exceed the 1024 session limit and sessions start being reset. Running out of sessions isn't being caused by torrents or p2p etc. We're a business and our legitimate uses are exceeding this session limit. AT&T tells me it's not possible to bridge the router or increase or avoid the session table limit. I'm curious if anyone has found a way around either of these issues.

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  • iproute2 rules and iptables NAT... what is the difference?

    - by Jakobud
    We have 2 different ISP connections. Our previous "IT guy" setup our firewall like so: When /etc/rc.local was executed on startup, it did a bunch of ip rule add and ip route add commands in order to route certain internal hosts to use certain ISP connections. Then at the end of /etc/rc.local, he executed our iptables firewall rules that were generated by Firewall Builder. These iptables rules have both Policy and NAT rules setup in them. What I don't understand, is why did he use iproute2 to specify rules and routes but also specify NAT rules for iptables? Why didn't he just do it all in one or the other instead of using them both? Could he have got rid of the iproute2 rules and routes and just put all those same rules into the iptables NAT settings?

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  • DELL switch 6248 port and mac mapping using SNMP

    - by Brad
    I have a Dell 6248 switch. I connect some of my servers to it and want to know which server nic connected to which switch port. I try using snmpwalk to get this information, but I just can get mac/ip mapping of my server nic from switch, I still can't get which switch port it connect. I try a tool named Managed Switch Port Mapping tool, it can show which switch port is connected to which nic/ip. I use WireShare to get all snmp packets but still can't find what's the snmp oid to get this information. Anyone knows how to get this?

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  • HAProxy authenticated httpchk (health check)

    - by Markel
    I am using HAProxy on EC2 and using httpchk to manage node availability. I had used a pseudo-unique path as the health check route in an attempt to make sure only my servers responded to the health check. Earlier today I had an EC2 server fall out of existence, and before the haproxy config was auto-regenerated (controller issues), Amazon had reassigned the IP to someone whom 200's every request (honeypot?), my HAProxy host then pulled the server back into rotation and started distributing some of my traffic there until the controller recovered and removed the ip from the list. TLDR; Is there a way to add a server authentication method to HAProxy's httpchk?

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  • Is is possible to change MAC address of a WiMAX USB adapter?

    - by Salman A
    Wondering if it is possible to change the MAC address of a WiMAX USB adapter (read WiMAX, not Wi-Fi) manufactured by Motorola, ZTE, Intel etc. I've tried a few tools that did changed the MAC address of the adapter to another valid MAC address (that I coped from another equipment made by same company) but then I was not able to connect to the network, the connection software took long time stating "obtaining IP address"; then few seconds after it got one said "lost IP address". Wondering if changing MAC address of such devices actually work.

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  • Allow traffic from ssl-vpn to enter ipsec tunnel on fortigate

    - by Sascha
    we configured our FortiGate 50B to route traffic from our local net 192.168.10.* (which is our office) to a remote network 172.29.112.* using an ipsec tunnel. Everything works fine as long my computer has an ip from 192.168.10.*. We can also connect to the office network from at home using a ssl vpn connection. Once connected we receive an ip from 10.41.41.*. Now I want to allow the traffic flow from 10.41.41.* to 172.29.112.* just like it does from the office network. Could somebody point me in the right direction what I would need to do? Thanks, Sascha

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  • Guests can't access KVM host server by name although nslookup and dig returns correct record

    - by user190196
    So I have a KVM host that also runs an apache server with some yum repos. The VM guests are connected to the default virtual network, which is configured to offer DHCP and forwarding with NAT on virbr0 (192.168.12.1). The guests can successfully access the yum repos on the host by IP address, so for example curl 192.168.122.1/repo1 returns the content without problems. But I'd like to have the guests be able to reach the web server on the host by name rather IP address. I added the desired name record to the host's /etc/hosts file and libvirt's dnsmasq service seems to be serving that correctly to the guests since nslookup and dig successfully resolve the name on the guests: [root@localhost ~]# nslookup repo Server: 192.168.122.1 Address: 192.168.122.1#53 Name: repo Address: 192.168.122.1 [root@localhost ~]# dig repo ; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6 <<>> repo ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55938 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;repo. IN A ;; ANSWER SECTION: repo. 0 IN A 192.168.122.1 ;; Query time: 0 msec ;; SERVER: 192.168.122.1#53(192.168.122.1) ;; WHEN: Tue Sep 17 02:10:46 2013 ;; MSG SIZE rcvd: 38 But curl/ping/etc still fail: [root@localhost ~]# curl repo curl: (6) Couldn't resolve host 'repo' While a request via ip address works: [root@localhost ~]# curl 192.168.122.1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <html> <head> <title>Index of /</title> [...] Same with ping: [root@localhost ~]# ping repo ping: unknown host repo [root@localhost ~]# ping 192.168.122.1 PING 192.168.122.1 (192.168.122.1) 56(84) bytes of data. 64 bytes from 192.168.122.1: icmp_seq=1 ttl=64 time=0.110 ms 64 bytes from 192.168.122.1: icmp_seq=2 ttl=64 time=0.146 ms 64 bytes from 192.168.122.1: icmp_seq=3 ttl=64 time=0.191 ms ^C --- 192.168.122.1 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2298ms rtt min/avg/max/mdev = 0.110/0.149/0.191/0.033 ms I tried adding repo 192.168.122.1 to the guests' /etc/hosts files but still no dice. Also tried changing guests' /etc/nsswitch.conf with both: hosts: files dns and hosts: dns files I've read the relevant libvirt documentation and I'm not sure where else to learn more about this and be able to move forward with it.

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