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  • Routing / binding 128 IPs to one server

    - by Andrew
    I have a Ubuntu server with 128 ip's (static external ips 86.xx.xx.16), and I want to crawl pages thru different ip's. The gateway is xx.xxx.xxx.1, the main ip is xx.xxx.xxx.16, and the other 128 ip's are xx.xxx.xxx.129/255. I tried this configuration in /etc/network/interfaces but I doesn't work. It work if I remove the gateway for the aliases eth0:0 and eth0:1. I think this is routing problem. auto lo iface lo inet loopback auto eth0 auto eth0:0 auto eth0:1 iface eth0 inet static address xx.xxx.xxx.16 netmask 255.255.255.128 gateway xx.xxx.xxx.1 iface eth0:0 inet static address xx.xxx.xxx.129 netmask 255.255.255.128 gateway xx.xxx.xxx.1 iface eth0:1 inet static address xx.xxx.xxx.130 netmask 255.255.255.128 gateway xx.xxx.xxx.1 Also, please tell me how to "reset" every changes that I made in networking and routing. Update: I removed the gateway and now it works. I can reach the website thru all 128 ip's. But when I try to bind a socket connection in php to a specific ip I get no answer. socket_bind($sock, "xx.xxx.xx.xxx"); socket_connect($sock, 'google.com', 80); I tryed to use a sniffer to see the packets, and I see the packet sent from binded ip to google.com but the "connection" can't be established. I don't know anything about "route" command, but I have a feeling that this is the solution.

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  • Simple vLAN setup

    - by Logan Bissonnette
    I have a basic lab environment set up to try and get 2 vLANs working in hyper-v. I have the following equipment 1 hyper-v server 1 Desktop PC 1 Managed Switch (d-link DES-3052P) 1 cheap router (DI-604) My end goal is to have 1 VM and the desktop on one vLAN with internet, and 1 VM on a separate vLAN with internet access. I am having troubles getting an internet connection to both vLANs. The switch does not have the ability to have asynchronous vLANs. This is my switch configuration Port 1 - Trunk Port - Connected to router Port 2 - Trunk Port - Connected to hyper-v Server Port 3 - Access Port- Connected to Desktop Within hyper-v I have 1 switch and 2 VMs. When the VMs are set up to use vlan ID 1, everything works fine. As soon as a VM is set up to use vlan ID 2, they lose all network connection and cannot communicate with the router anymore. I believe this is because the router is not vLAN aware. Can anyone help me with what settings need to be set up on my switch? I believe I want an egress rule so traffic leaving towards the router is untagged, is that right? If not, any ideas or hints as to what needs to be set up?

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  • Secure data from a server to a workstation using jumper hosts

    - by apalsson
    Hello. I have a WWW-server, my problem is that the content is sensitive and should not be accessible for people without proper credentials. How can I improve the ease of use but still maintain security following scenario; The Server is accessed through a "jumper host", i.e. the client connects to the jumper using VPN-connection and uses RemoteDesktop to access the jumper. From the jumper he uses RemoteDesktop again to access the Server. Finally on the Server the user can access content using a WWW-browser. All the way from the VPN-client to the WWW-browser requires authentication using a SmartCard-token. This seems quite secure to me. Content only gets mirrored on the RemoteDesktop between Server and jumper, no cached files to worry about. Connection between jumper and client is protected using VPN(ssl), so no eavesdropping. But it is quite cumbersome for the clients with many steps and connections to open. :( So, how can I improve the user experience accessing my server without compromising security? Thanks.

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  • Looking to get a small server – need web, PHP, PostgreSQL.

    - by Javawag
    Hi all! I'm looking to get a cheap (low end) server to serve web pages (xHTML/PHP), but I also need to be able to set up PostGreSQL on the system too. Ideally the server would have low power consumption, run Linux (I prefer Mac OS X but a Mac Mini, although the size I'm looking for, is too much money!) and be around £100 (~$160US). EDIT: Just to make it clearer, I'm looking to purchase the server hardware myself – but I want something about Mac Mini sized. I don't want to pay for hosting! Also, quick question – if it's to serve web pages from my home (standard ISP connection, no static IP!), what do I need in place to get this working. I'm guessing I would sign up with some service like no-ip, and register a domain to point to my no-ip address (then install the no-ip software on the server to update that with the current IP). I know the idea of running a server behind a normal ISP connection isn't very elegant, but I'd prefer to have the server where I can see it then pay over the odds for a hosting service where I have little to no control over what happens. Also, I could write my own server software for apps/etc to connect to as well. Anyways I'm rambling! What do you guys think?! Javawag

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  • Find slow network nodes between two data centers

    - by 2called-chaos
    I've got a problem with syncing big amount of data between two data centers. Both machines have got a gigabit connection and are not fully occupied but the fastest that I am able to get is something between 6 and 10 Mbit = not acceptable! Yesterday I made some traceroute which indicates huge load on a LEVEL3 router but the problem exists for weeks now and the high response time is gone (20ms instead of 300ms). How can I trace this to find the actual slow node? Thought about a traceroute with bigger packages but will this work? In addition this problem might not be related to one of our servers as there are much higher transmission rates to other servers or clients. Actually office = server is faster than server <= server! Any idea is appreciated ;) Update We actually use rsync over ssh to copy the files. As encryption tends to have more bottlenecks I tried a HTTP request but unfortunately it is just as slow. We have a SLA with one of the data centers. They said they already tried to change the routing because they say this is related to a cheap network where the traffic gets routed through. It is true that it will route through a "cheapnet" but only the other way around. Our direction goes through LEVEL3 and the other way goes through lambdanet (which they said is not a good network). If I got it right (I'm a network intermediate) they simulated a longer path to force routing through LEVEL3 and they announce LEVEL3 in the AS path. I basically want to know if they're right or they're just trying to abdicate their responsibility. The thing is that the problem exists in both directions (while different routes), so I think it is in the responsibility of our hoster. And honestly, I don't believe that there is a DC2DC connection which only can handle 600kb/s - 1,5 MB/s for weeks! The question is how to detect WHERE this bottleneck is

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  • One dns server in different subnets

    - by hofmeister
    I have installed a small Linux server; the server is in a different subnet as the internet hosts. I added a route to my nat router to create a connection between both subnets. In both subnets I use an extra dhcp Server. Subnet A: 192.168.0.0/26 Subnet B: 192.168.1.0/26 Router: 192.168.0.1, Server in A: 192.168.0.62, Server in B: 192.168.1.62 internet ____ nat router ___ (Sub A)___ internet hosts | |____(Sub B)___ other hosts I could ping every host. Also the hosts which are connected to the subnet b, has internet connection. But sadly I have a problem with the dns server. I use the dnsServer from my nat router, I set the dns Server for subnet b to the ip 192.168.0.1, but every dns entries are equal with the hostname from my linux server. Example if the hostname from the server is test Test 192.168.0.62 //Server subnet a Test-2 192.168.1.62 //Server subnet b Test-2-2 192.168.1.1 //host a Test-2-2-2 192.168.1.2 //host b Any idea what went wrong? The internet dns resolution works fine.

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  • How is route automatic metric calculated on Windows 7?

    - by e-t172
    KB299540 explains how Windows XP automatically assign metrics to IP routes: The following table outlines the criteria that is used to assign metrics for routes that are bound to network interfaces of various speeds. Greater than 200 Mb: 10 Greater than 20 Mb, and less than or equal to 200 Mb: 20 Greater than 4 Mb, and less than or equal to 20 Mb: 30 Greater than 500 kilobits (Kb), and less than or equal to 4 Mb: 40 Less than or equal to 500 Kb: 50 However, they seem to have changed their algorithm in Windows 7, as my routing table looks like this: IPv4 Route Table =========================================================================== Active Routes: Network Destination Netmask Gateway Interface Metric 0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.3 10 0.0.0.0 0.0.0.0 10.202.254.254 10.202.1.2 286 10.202.0.0 255.255.0.0 On-link 10.202.1.2 286 10.202.1.2 255.255.255.255 On-link 10.202.1.2 286 10.202.255.255 255.255.255.255 On-link 10.202.1.2 286 127.0.0.0 255.0.0.0 On-link 127.0.0.1 306 127.0.0.1 255.255.255.255 On-link 127.0.0.1 306 127.255.255.255 255.255.255.255 On-link 127.0.0.1 306 192.168.0.0 255.255.255.0 On-link 192.168.0.3 266 192.168.0.3 255.255.255.255 On-link 192.168.0.3 266 192.168.0.255 255.255.255.255 On-link 192.168.0.3 266 224.0.0.0 240.0.0.0 On-link 127.0.0.1 306 224.0.0.0 240.0.0.0 On-link 192.168.0.3 266 224.0.0.0 240.0.0.0 On-link 10.202.1.2 286 255.255.255.255 255.255.255.255 On-link 10.202.1.2 40 =========================================================================== The only "correct" metric is the first one (Gigabit connection = 10). However, other routes using the Gigabit connection have metric = 266, my VPN has metric = 286, and loopback is 306 (?!). Any idea what's going on?

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  • Windows Vista/7 dropping Mac Server share points

    - by Hooligancat
    My Windows Vista and Windows 7 clients are having problems maintaining access to SMB shares on a Mac server. The initial connection to the server appears to be OK, as the Windows clients can see all of the server share points. However, the client randomly drops a couple of the server share points although the clients can still see the server. For example. If I have the following share points on the Mac server: Share A Share B Share C Share D Share E The Windows client can see these shares most of the time and can access them most of the time. But randomly a couple of the shares will just get dropped or go missing from the Windows client's ability to view them so I end up with something like: Share B Share D Share E All the share points are established int the same way with the same permission settings. My Mac OSX Server is set up with the following for SMB: SMB sharing enabled Standalone Server Workgroup of `CORPORATE` Allow Guest Access = YES Client connections limit = 100 Authentication: NTLMv2 & Kerberos and NTLM Code Page is Latin US (437) This is a workgroup master browser WINS registration is set to Enable WINS server (tried with setting off) Enable virtual share points for homes YES I noticed in my SMB file service log that the clients appear to connect OK, but I get the following error which implies a reset by either the server or the client: /SourceCache/samba/samba-187.9/samba/source/lib/util_sock.c:read_data(534) read_data: read failure for 4 bytes to client 192.168.0.99. = Connection reset by peer I am a bit stumped as to a direction to turn to try and get this to resolve. Continued attempts to access the server from the client will reconnect to the share points, but they inevitably get dropped again in the near future. Any and all help much appreciated.

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  • Problem connecting to remote network using demand-dial VPN interface with Windows Server 2003

    - by Mike Forman
    I have a Windows 2003 server (SP2) that I'm trying to set up route traffic from my local network using a VPN My local network has the following components: Broadband router (192.168.0.1) Windows Server with a single NIC running RRAS (192.168.0.2 def. gateway = 192.168.0.1) Client Machine (192.168.0.3 def. gateway = 192.168.0.1) Using a VPN connection, I am trying to access a remote machine (10.0.0.1 for example) I configured RRAS with a demand-dial interface for the VPN and set it to be a persistent connection. As part of that setup, a static route to 10.0.0.0 (255.255.0.0) was created. When at the console of the server, I can ping 10.0.0.1 with no problems I added a route on the client machine using the following command: ROUTE ADD 10.0.0.0 MASK 255.255.0.0 192.168.0.2 If I run tracert 10.0.0.1 from the client, the first hop is to 192.168.0.2 which tells me that route is working. However, I cannot ping 10.0.0.1 from the client machine. What am I missing? Hopefully something simple.

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  • Windows Server 2008 ignores any change made to firewall

    - by Maurice Courtois
    I have been trying for the last 2 hours to make my Windows Server 2008 answer ping. I have tried almost every single solution I have found on the web, so far nothing work. My current setup: 2 NIC (1x Internet connection, 1x Local network) Server act as VPN server. So I set the corresponding NIC as either Public or Private. I also enable the rule for "File and Printer Sharing (Echo Request...)" for all Nic and from any IPs. I always been able to ping from the local network or the local ip while connected to the VPN. I also tried to create a specific rule for ICMP ping and disabling the firewall for all but the public nic. Regardless of all this, I still can't ping that server from Internet. Any idea suggestion what could cause this? I have the impression that when you set the server as VPN (I switch the box on when setting it up to block everything else than VPN connection) that changing anything to the firewall setting thought mmc is pointless !?!?

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  • Setup windows 2012 AD in Hyper-V for a Test environment

    - by hub
    Im trying to setup a Windos 2012 R2 test environment on my work computer (a laptop). I have a AD, DHCP and DNS server on server A, and a client connecting to the doman and that works. The client can ping the AD server and gets a valid IP adress. If I ping google.com from the client I get the IP adress but I dont get any responses (request time out). If i ping google.com from server A it works as it should. Server A have a connection to the Internet through a "external network switch" in hyper-v, which gets its internet from a router and the client is connected to a "internal network switch". May the poblem be that server A is behind a router? Can I make this solution to work regadless the network my laptop is connected to? At home i have one IP adress, at work its a totally different range. What I would like is to use my laptops internet connection, regardless wifi or wired, to act as incomming internet, is this possible?

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  • Does a VPN requirement kill the concept of having a Web Application in the Cloud?

    - by Christian
    Recently I posted a question in SO, but so far I got no answers. I wonder if I'm asking the wrong question. This is the problem: We need to design an application which offers a public http web service, but at the same time it must consume some services through a VPN connection from other existing company. There is no other alternative but to use a VPN connection to access those services. We want to host our application in some cloud infrastructure like Heroku or Amazon EC2. But there is no direct way to access the VPN services of the other company from there. The solution I'm thinking, but I don't like is to have a different server to expose the services from that VPN. But this will require the setup of another server which I prefer to avoid. In the case this is the solution, can I use an Amazon EC2 instance to connect to a VPN? This is what I was thinking, is it correct? I don't have experience using VPNs, tunnels or those kind of networking stuff. I will really appreciate if you can propose me an alternative solution, or just give me a comment.

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  • Is there any way for ME to improve routing to an overseas server? [migrated]

    - by Simon Hartcher
    I am trying to make a connection to a gaming server in Asia from Australia, but my ISP routes my connection through the US. Tracing route to worldoftanks-sea.com [116.51.25.54]over a maximum of 30 hops: 1 <1 ms <1 ms <1 ms 192.168.1.1 2 34 ms 42 ms 45 ms 10.20.21.123 3 40 ms 40 ms 43 ms 202.7.173.145 4 51 ms 42 ms 36 ms syd-sot-ken-crt1-ge-6-0-0.tpgi.com.au [202.7.171.121] 5 175 ms 200 ms 195 ms ge5-0-5d0.cir1.seattle7-wa.us.xo.net [216.156.100.37] 6 212 ms 228 ms 229 ms vb2002.rar3.sanjose-ca.us.xo.net [207.88.13.150] 7 205 ms 204 ms 206 ms 207.88.14.226.ptr.us.xo.net [207.88.14.226] 8 207 ms 215 ms 220 ms xe-0.equinix.snjsca04.us.bb.gin.ntt.net [206.223.116.12] 9 198 ms 201 ms 199 ms ae-7.r20.snjsca04.us.bb.gin.ntt.net [129.250.5.52] 10 396 ms 391 ms 395 ms as-6.r20.sngpsi02.sg.bb.gin.ntt.net [129.250.3.89] 11 383 ms 384 ms 383 ms ae-3.r02.sngpsi02.sg.bb.gin.ntt.net [129.250.4.178] 12 364 ms 381 ms 359 ms wotsg1-slave-54.worldoftanks.sg [116.51.25.54] Trace complete. Since I think it will be unlikely that my ISP will do anything, are there any ways to improve my routing to the server without them having to intervene? NB. The game runs predominately over UDP, so I believe most low ping services are out of the question, as they rely on TCP traffic.

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  • ssh initial prompt hangs for 10 minutes but console login and initial prompt is very responsive - why?

    - by rfreytag
    I have been running an ESXi 4.0 server for months with a couple of WinServer2003 and several Ubuntu Server 10.4 VMs. The performance has been impressive on 6GB i7 Asus P6T hardware. Suddenly, a week ago, ssh logins to the Ubuntu VMs take 10 minutes when connecting over the LAN (over a WAN the connection (pipe) is broken long before that). When logging in to these VMs the password prompt arrives immediately, and failed passwords are responded to immediately. But the moment I log in then the shell prompt appears and I hang for many minutes. Sometimes the connection hangs before the shell prompt appears and sometimes I can type in a command but the moment I hit return the machine hangs. 10 full minute later control returns and the VM is responsive. NOTE: there are several Ubuntu VMs on the same host machine that are identical in all ways that I can tell. However, only one of the VMs displays this behavior. That is why I mention the ESXi host in passing - I don't think it has anything to do with the problem. This behavior is never seen when I connect with the troubled-VM's console (through vSphere Client). From the console the Ubuntu VMs all respond beautifully. I have seen: http://kb.vmware.com/selfservice/microsites/search.do?cmd=displayKC&docType=kc&externalId=1003496&sliceId=1&docTypeID=DT_KB_1_1&dialogID=229586372&stateId=1%200%20229588522 ...and since that relates to delays in seeing the password prompt that does not appear to be the solution here. Any other suggestions very welcome - thank you.

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  • Manual NAT on Checkpoint (Redirect all http requests to a local web server)

    - by kulakli
    Hi, We have a proxy server in internal network and I want to redirect all internet http requests to a web server in local network. It'll be like a Network Billboard that say "No direct connection is available. Set up your proxy etc." For example: A user starts the computer Opens the browser Trys to open www.google.com Should see web server output on local network Trys another web site on internet Should see web server output on local network Sets up proxy Trys to connect to a web site Web site should be loaded I have added a simple manual NAT rule to address translation in Checkpoint firewall but it simply does not work. Here is my address translation rule Source Destination Service T.Source T.Destination T.Service MY_PC A_GOOGLE_IP ALL ORIGINAL INT_WEB_SRV ORIGINAL Then when I ping A_GOOGLE_IP, replies come from INT_WEB_SRV, as I expected. However, when I try to connect A_GOOGLE_IP from browser (http://A_GOOGLE_IP), No replies come from SYN_SENT and falls into timeout. When I look at the firewall log of INT_WEB_SRV, I can see the incoming connection requests from MY_PC is accepted and NO denies. By the way, there is no problem to see INT_WEB_SRV (http://INT_WEB_SRV) from browser. My understanding is, my nat rule at checkpoint NGX R60 does not include return packets. I definitely need some help. Regards, Burak

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  • “NT AUTHORITY\ANONYMOUS LOGON” error in Windows 7 (ASP.NET & Web Service)

    - by Tony_Henrich
    I have an asp.net web app which works fine in Windows XP machine in a domain. I am porting it to a Windows 7 stand alone machine. The app uses a web service which makes a call to sql server. The web server (IIS 7.5) and SQL Server are on the same stand alone machine. I enabled Windows authentication for the website and web service. The web service uses a trusted connection connection string. The web service credentials uses System.Net.CredentialCache.DefaultCredentials. I noticed username, password and domainname are blank after the call! The webservice and web site use the 'Classic .NET AppPool' with NetworkServices identity. I am getting an exception "NT AUTHORITY\ANONYMOUS LOGON" in the database call in the web service. I am assuming it's related to the blank credentials. I am expecting ASPNET user to be the security token to the database. Why is this not happening? Did I miss a setting? (Usually this happens when sql server and web server are on two different machines in a domain, delegation & double hopping, but in my case everything is on a dev box)

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  • Setting up ssh config file with id_rsa through tunnel

    - by Rubens
    I've been struggling to set up a valid configuration to open a connection with a second machine, passing through another one, and using an id_rsa (which requests me a password) to connect to the third machine. I've asked this question in another forum, but I've received no answer that could be considered very helpful. The problem, better described, goes as follows: Local machine: user1@localhost Intermediary machine: user1@inter Remote target: user2@final I'm able to do the entire connection using pseudo-tty: ssh -t inter ssh user2@final (this will ask me the password for the id_rsa file I have in machine "inter") However, for speeding things up, I'd like to set my .ssh/config file, so that I can simply connect to machine "final" using: ssh final What I've got so far -- which does not work -- is, in my .ssh/config file: Host inter User user1 HostName inter.com IdentityFile ~/.ssh/id_rsa Host final User user2 HostName final.com IdentityFile ~/.ssh/id_rsa_2 ProxyCommand ssh inter nc %h %p The id_rsa file is used to connect to the middle machine (this requires me no password typing), and id_rsa_2 file is used to connect to machine "final" (this one requests a password). I've tried mixing up some LocalForward and/or RemoteForward fields, and putting the id_rsa files in both first and second machines, but I could not seem to succeed with no configuration whatsoever. Hope somebody can help me here! Regards! P.S.: the thread I've tried to get some help from: http://www.linuxquestions.org/questions/linux-general-1/proxycommand-on-ssh-config-file-4175433750/

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  • Postfix additional transports - is it working?

    - by threecheeseopera
    I have enabled two additional transports in my postfix config to deal with recipient domains that demand connection limiting, per the instructions here at serverfault. However, I have no idea if this is working or not; in fact, I think it is not working, due to the send speeds I am seeing in the logs. How might I determine if my additional transports are working? If they aren't, do you have any tips on figuring out why? And, do you have any comments on my particular configuration? (am I a bucket of fail?) I have enabled the additional transports in master.cf: smtp inet n - - - - smtpd careful unix - - n - 10 smtp -o smtp_connect_timeout=5 -o smtp_helo_timeout=5 cautious unix - - n - - smtp -o smtp_connect_timeout=5 -o smtp_helo_timeout=5 I have set up the transport mapping file /etc/postfix/transport: hotmail.com cautious: yahoo.com careful: gmail.com cautious: earthlink.net cautious: msn.com cautious: live.com cautious: aol.com careful: I have set up the transport mapping and some connection-limiting settings in main.cf: transport_maps = hash:/etc/postfix/transport careful_initial_destination_concurrency = 5 careful_destination_concurrency_limit = 10 cautious_destination_concurrency_limit = 50 Finally, I have run converted the transport file to a db per the postfix docs: #> postmap /etc/postfix/transport And then restarted postfix. I do see my transport_maps setting when I run postconf, but I do not see any of the transport-specific settings ('careful_xxx_yyy_zzz'). Also the mail logs do not appear to be different in any way to what they were previously. Thanks!!!

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  • Failover Cluster Quorum Failing

    - by oruchreis
    Hi, I have two nodes which boots from iscsi to implement windows 2008 cluster. And I'm using disk majority option as quorum over iscsi. But when the quorum's iscsi connection failed(May be san server reset), the failover cluster is failed too. If I reset one of the nodes, it can open, but its system disk goes offline. I cant change its status as online, because it says that its reserved by failover cluster(disk is on iscsi, beacuse iscsi boot). And this disk works as readonly. Anything on it cant be deleted or written. So, I cant rejoin the node to the cluster again. I have to reinstall windows. So, what I'm asking is, how can I implement more quorum backup? I mean, can I use both disk majority and file share majority at same time? AFAIK, every nodes also keep the quorum's copy too. But I don't know sometimes san servers goes offline. And quorum's iscsi connection and nodes' iscsi connections get lost. So, nor the quorum that is kept in the nodes neither the quorum iscsi disk is not enough to start the cluster again. I want to use both disk majority and file share majority at the same time. Can I do this? Have you any other suggestion? Regards.

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  • How to stop NAT dropping idle connections?

    - by WGH
    I have a TCP connection that can be idle for many hours. The traffic is flowing from the server to the client only. One might say it's kind of push notification. My home router, however, tends to drop the connection silently after 20 minutes (the value of /proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established). The server detects the loss once it tries to send anything (I assume it receives RST from the router itself). As client never sends anything, it never detects the loss. RFC 5382 "NAT Behavioral Requirements for TCP" states the following: A NAT can check if an endpoint for a session has crashed by sending a TCP keep-alive packet and receiving a TCP RST packet in response. It makes sense. It's much more effective than sending keep-alives by the host itself (as only NAT knows its own timeout). And probably not hard to implement. Is there any NAT solutions implementing this? It would be great if there was a way to enable this in iptables.

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  • Connections to SSH and Samba suffer from heavy delay

    - by Till Helge Helwig
    There are a lot of questions about SSH connections being delayed, which usually can be fixed by disabling the DNS lookups. Unfortunately this doesn't seem to be my problem. Our development server is accessed via SSH and Samba. When opening a connection to the server (either SSH or Samba) it takes a very long time. Accessing a Samba share via Windows is basically impossible because there is a timeout. Using smbclient works, but takes ages. When opening a SSH connection I get immediately prompted for the password and after hitting Enter the terminal instantly shows the MOTD. Afterwards it takes about a minute for the prompt to appear. I watched the load of the server while connecting via SSH and Samba and could not find anything out of order. There is nothing out of the ordinary running and hogging up memory and CPU or something. I have no clue where this delay might come from. I already tried UseDNS no in sshd_config and proxy_dns = no in smb.conf, but to no avail. Any idea about what might cause this would be greatly appreciated!

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  • What does opening a serial port do?

    - by reve_etrange
    What does opening the standard PC serial port do, in electrical terms (i.e. what voltages on which pins)? For example, the ancient VB6 program which controls an apparatus I am tasked with maintaining toggles .PortOpen to control some TTL. The connection only used 2 pins (bad solders fell apart), so which pins do I solder to? The only labels / documentation refer to pins 7 and 9, saying 0V and 5V parenthetically, but does .PortOpen really just put 5V between RI and RTS?. As a post script, this isn't the weirdest thing about the set up. The TTL I referred to above also connects to an instrument via a BNC to DB9 (!), with only 1 pin used. I guess there was an assumption about a common ground, since the BNC shielding isn't connected to the GND pin? The connection is to the instrument's 'foot pedal' pin, it was a way to remotely trigger the device. Update According to this page, the DTR and RTS pins can go high when the port is opened. If they were so configured, they will subsequently go low when the port is closed. If DTR and RTS are not enabled, opening the port should set both to low (and keep them low).

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  • Create image (EBS AMI) takes forever - possibly caused MySQL Server to break?

    - by fuzzybee
    I'm trying to create an EBS AMI from my running EC2 instance to reuse my LAMP fully configured (for my needs). I got my website up and running yesterday on this EC2 instance my MySQL was working fine until this morning (it's not that difficult to install LAMP thanks to yum so I can't see how I could go wrong with this; having said that, it's always difficult for one to realise his own errors) I have seen "Loading, please wait ..." for a few hours now. How do I know whether this is completed or its progress? Shortly after I tried to create the AMI image from my EC2 instance, I encountered database connection error can't connect to local mysql server through socket '/var/lib/mysql/mysql.sock' I was able to restart mysqld at first. But database connection was down again. This time, I could not restart mysqld anymore. It shows MySQL Daemon failed to start. Could my attempt to create the AMI by any chance cause the MySQL server to reboot or corrupt? I did a lot of searched and have done the following although I think I shouldn't have to do any workaround for MySQL server to work here chown -R mysql.mysql /var/lib/mysql/ I also found this workaround but I'm very reluctant to follow due to my belief and the fact I would need to understand this problem first. Any help would be greatly appreciated. Getting back to searching for a solution for the MySQL server problem ... Thanks, Eric

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  • Software RAID 1 Configuration

    - by Corve
    I have created a software RAID 1 quite some while ago and it always seemed to work for me. However I am not completely sure that I have configured everything right and do not have the experience to check so I would be very grateful for some advice or just verification that all seems right so far. I am using Linux Fedora 20 (32 bit with plans to upgrade to 64bit) The RAID 1 should consist of two 1TB SATA hard drives. This is the output of mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sun Jan 29 11:25:18 2012 Raid Level : raid1 Array Size : 976761424 (931.51 GiB 1000.20 GB) Used Dev Size : 976761424 (931.51 GiB 1000.20 GB) Raid Devices : 2 Total Devices : 1 Persistence : Superblock is persistent Update Time : Sat Jun 7 10:38:09 2014 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 Name : argo:0 (local to host argo) UUID : 1596d0a1:5806e590:c56d0b27:765e3220 Events : 996387 Number Major Minor RaidDevice State 0 0 0 0 removed 1 8 0 1 active sync /dev/sda The RAID is mounted successfully: friedrich@argo:~ ? sudo mount -l | grep md0 /dev/md0 on /mnt/raid type ext4 (rw,relatime,data=ordered) Basically my question are: Why do I only have 1 active device? What does the State removed at bottom mean? Also I noticed some strange error messages that I see on the console on system start and shutdown and always repeating in the background when I switch with Ctrl + Alt + F2: ... ata2: irq_stat 0x00000040 connection status changed ata2: SError: { CommWake DevExch } ata2: COMRESET failed (errno=-32) ata2: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen ata2: irq_stat 0x00000040 connection status changed ata2: SError: { CommWake DevExch } ata2: exception Emask 0x10 SAct 0x0 SErr 0x4040000 action 0xe frozen ... Are these errors related to the RAID? Something seems wrong with the SATA devices.. All together the system works (I can read and write to the mounted raid) but I always had these strange errors on startup shutdown (probably always in the background). Thx for your help

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  • Routing for remote gateway over VPN in Vista/7 broken?

    - by Raymond
    Hi, Situation is as follows. Home computer running Windows 7, sets up VPN connection (LT2P + IPSec, "use remote gateway" disabled) to office. Subnet is 192.168.64.x Office has Draytek Vigor 2920 router, subnet is 192.168.32.x What happens? - VPN connection itself works fine - Can ping any machine on the remote network - When trying to open a webpage from a host in the remote network, the remote server logs the incoming request, but the browser hangs on "waiting for..." and eventually times out. I have observed this problem on Windows Vista and Windows 7. On Windows XP however there is no problem like described above. The only clue I have is that there is a difference in the routing between XP and Vista/7. The output of "route print" on Windows XP looks like this: (See www.latunyi.com/routing_xp.png) So here the gateway for the 192.168.32.x subnet is the IP address that the local computer has in the remote network. The output of "route print" on Windows 7 (and Windows Vista) looks like this: (See www.latunyi.com/routing_win7.png") Now the gateway for the 192.168.32.x subnet is the IP address of the VPN router (32.1). I don't know if that causes this trouble, but it seems a bit strange. Enabling "use default gateway on remote network" doesn't make a difference. Using the new option "Disable class based route addition" in Windows 7 only makes the route to the VPN router disappear. I am really puzzled here. I assume the VPN routing can't be broken in both Vista and Windows 7, and this should just work without manually adding routes. I hope someone has a solution for this problem :-). Thanks!

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