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• Problem IIS 7.0 Locking files durring upload

  - by viscious

  I am running a server 2008 with iis7 and the ftp addon on to iis 7.0 I have the ftp site configured and mostly working Except that about 70% of the time when transferring a file the upload will hang forever. If I disconnect the ftp client and reconnect and try to upload the same file I will get an error on the client saying the file is locked. I have to restart the ftp service to clear the lock. I fired up process explorer and did a search on the file in question and sure enough the ftp service has a lock on the file and it takes around 20 minutes to release the lock on its own (and sometimes longer). This lock stays around even after I disconnect the client. Like I said this only happens about 70% of the time, the other 30% of the time it goes through just fine. Things i have verified. -Not a firewall issue. Server is using passive port range 8000-9000 which is allowed on the firewall. -Not a nat issue, server has a globally rout-able ip address -all recommended/required updates installed I have 5 other servers in a very similar configuration and this is the only one i have problems with.

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• Cannot access domain from windows 2003 client

  - by Peuge

  Hey all, First off I am a novice at AD and DNS so please bear with me. This is my current situation: I have one server which is a DC and DNS server (win2k3) - Machine 1. I have another machine which is trying to join this domain - Machine2. This machine is also a win2k3 server. This is what I have done so far: I have setup DNS on the DC and its tcp/ip dns is pointing to itself. On machine2 I have set its dns to point to the dc. The DNS has been setup with a forward lookup zone with the same name as the domain (accdirect.com). I can ping machine1 from the machine2 by its FQDN and ip. I have set up forwarders on the DC for our ISP dns and can browse the internet on both machines. In the DNS mmc on the DC I can see a host (A) has been created for machine2. The problem is I still cannot join the domain. When I try join the domain via my computer - properties then it brings up the username/password box and after I go "ok" it says cannot find domain accdirect.com If I run this from machine2 dcdiag /s:accdirect.com /u:accdirect.com\admin /p: then I get the following: Performing initial setup: ** Warning: could not confirm the identity of this server in the directory versus the names returned by DNS servers. If there are problems accessing this directory server then you may need to check that this server is correctly registered with DNS [accdirect.com] Directory Binding Error 1722: Win32 Error 1722 This may limit some of the tests that can be performed. Done gathering initial info. On the dc all dcdiag and netdiag results pass. If anyone could help me I would really appreciate this! Sorry if any of my terminology is a bit off, I have only been doing this for two days. thanks Peuge

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• BackupExec 12 + RALUS - VERY slow backups

  - by LVDave

  We use Backup Exec 12 and the Remote Agent for Linux/Unix Servers (RALUS) to backup a large RHEL5 system. For various reasons we need to do a daily working set job. These working-set jobs run abysmally slow. The link between the target machine and the BE server is gigabit, and any other type of job runs 1-3GB/min. These working-set jobs start out at perhaps 40MB/min and over the course of the backup job slowly drops down so low that the BE job rate display in the "current jobs" goes blank.. Since we usually are only doing changed-files for one day, the job is usually small and finishes overnight and we don't worry abotu the slowness, but we had some issues with the backup server, and missed about 6 days of fairly heavy work on the Linux box, so this working-set job will be a doozy.. We have support with Symantec, and I've pestered them a lot about this, they've had me run RALUS in debug mode, sent them that log and a VXgather from the BE host and they had no fix/workaround.. To give an idea, I have the mentioned working-set job running for the last 3 1/2 hours and it's backed up just under 10MEGAbytes.... I'm posting this here to see if anybody in the "real world" has seen this/and/or has any ideas what might be causing these abysmally slow jobs, since Symantec seems to be clueless...

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• windows clients cannot get dns resolution until you open and close ipv4 properties page

  - by GC78

  This strange problem has started recently. Some windows clients cannot seem to get dns resolution to the internet after boot, and sometimes again at some point in the day. Internal hosts are also slow to resolve. trying to ping an interal host by name will take a long time for the hostname to resolve to ip address and trying to ping a website by name will fail to resolve. If you go into the tcp/ip v4 properties and view but not change anything, ok/close out of that then the client starts working fine, hostnames will resolve quickly. I have seen this happen on both Vista and W7 clients. ipconfig /all at a client experiencing this problem shows everything in order. proper ip addr, gateway, dns server, dns suffix ect.. ipconfig /dnsflush will not fix them, neither will /release and /renew the clients get their ip address, mask and dns server info from either one of 2 OES dhcp servers that assign addresses in different scopes in the same subnet. the internal dns server is a different OES dns server the default gateway is not assigned by the OES server but is statically put in at the client (only for those who need to get to the Internet for their job) flat network topology What can I do to get to the bottom of this? It only happens to a few of the client machines and typically the same ones. It started happening when we made a change to one of the DHCP scopes in iManager. Strangly this problem only happens to clients that get an IP address from the scope that we didn't make any changes to.

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• server and user directly connected no pinging...

  - by jtzero

  I have a server(fedora 12) with two nics on it, directly connected to say 192.168.1.0 and 192.168.2.0 the route table looks like this Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.1.0 192.168.1.1 255.255.255.0 U 0 0 0 eth0 192.168.2.0 * 255.255.255.0 U 0 0 0 eth1 eth0 = 192.168.1.15 eth1 = 192.168.2.1 and a directly connected user (Mythdora) on the 192.168.2.0 network with ip 192.168.2.2 and route table like so Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.2.0 * 255.255.255.0 U 0 0 0 eth0 the cable is a crossover and it works all three nics work -- connected my laptop to either end and assign it a valid 192.168.2.0 ip the pings will work. In fact if I disconnect the server side and plug the eth cable into the laptop and have thte box ping the laptop continually remove the eth cable and plug it back into the server both sides ping... unfortunately the box realizing it's connected to a different pc wipes its route table after say ten minutes or so. if I do a trace route from a box on the 1.0 network to the servers 192.168.2.1 interface never get a reply from it. as a note at one point I could ping the server from the 192.168.2.2 box but the server couldnt ping the 192.168.2.2 box.

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• SQL Server 2008 second instance times out when logging in -- but only the first time?

  - by Kromey

  This is a strange one that has plagued me for a while now. When logging in to the second instance of SQL Server 2008 on one of our database servers, we get a timeout error: Cannot connect to servername\mssqlserver2. Additional information: Timeout expired. The timeout period elapsed prior to completion of the operation or the server is not responding. (Microsoft SQL Server)") (This is the error message when trying to connect with Microsoft SQL Server Management Studio; other tools experience the same error, but of course say it in different ways.) Immediately re-attempting to log in works just fine, so whatever the cause it's ephemeral! This happens regardless of user or authentication type (both Windows and SQL Server authentication methods are supported on this instance). What's even weirder, though, is that the first instance on this server has never once demonstrated this problem. Server is a Windows Server 2008 R2 virtual server, hosted in Microsoft Hyper-V (host is likewise Server 2008 R2). The server has 2GB of RAM, and seems to regularly be using 90% of that -- could low memory be the cause of this issue? I could see this second instance -- which is not used very often yet -- being swapped out to disk, and then taking too long to load back into memory to respond in time to the connection request, but I'd rather have more than just my own hunch before I go scheduling a downtime for this server (the first instance is used regularly) and then just throwing extra resources at it in the blind hope that the problem goes away.

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• VirtualBox problems writing to shared folders (Guest Additions installed)

  - by vincent

  I am trying to setup a shared folder from the host (ubuntu 10.10) to mount on a virtualized CentOS 5.5 with Guest Additions (4.0.0) installed (Guest addition features are working ie. seamless mode etc.). I am able to successfully mount the share with: mount -t vboxsf -o rw,exec,uid=48,gid=48 sf_html /var/www/html/ (uid and guid belong to the apache user/group) the only problem is that once mounted and I try to write/create directories and files I get the following: mkdir: cannot create directory `/var/www/html/test': Protocol error I am using the proprietary version of VirtualBox version 4.0.0 r69151. Has anyone had the same problem and been able to fix it or has any idea how to potentially fix this? Another question, the reason for setting this up is this. Our production servers are on CentOS 5.5 however I am a great fan of Ubuntu and would like to develop on Ubuntu rather than CentOS. However in order to stay as close to the production environment I would like to virtualize CentOS to use a web server and use the shared folder as web root. Anyone know whether this isn't a good idea? Has anyone successfully been able to set this up? Thanks guys, your help is always much appreciated and if you need any more information please let me know.

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• MS licensing of multiple RDP sessions for non-MS products in Windows XP Pro

  - by vgv8

  Question 1) and 2) were moved into separate thread Which Windows remote connections bypass LSA? and what r definitions of login vs. logon session? 3) Do I understand correctly that multiple remote RDP sessions are supported by Windows XP but require additional (or modified) licensing? Which one? Or it is always illegal to run multiple RDP sessions on Windows XP? even through non-MS commercial software? ---------- Update1: I already understood my error - the main questions were about definitions (important to find the common language with others) and the licensing questions were collateral - but it was already answered. I shall try to separate these questions leaving here the questions about RDp licensing and migrating other questions into separate thread ---------- Update2: Trying to "work around" licensing terms is pointless and wasteful of time I never try "working around" and I never ask anything like this, I am not specialist in licensing. My clients/employers provide me with tools and licensing support. They have corporate lawyers, planning/accounting/purchase departments for these issues. The questions that I ask is the matter of scalability and efficiency (saving my and others time) in my developing work. For ex., Just because I need autentication against Windows AD it is time-saving to use ADAM instead of deploying full-fledged AD with DC + servers + whatever else? Nobody is forcing you to use Windows XP I shall not rush into re-installing all my operating systems on all my development machines (at home, at client premises) just because a few guys have a lot of fun downvoting development-related questions in serverfault.com. If I do so, I make a joker from me in the eyes of my clolleagues et al Update: I unmarked this question as answered since it had not even adressed the question, at least mine. Should I understand that Terminal Server PRO, allowing Windows® XP and Windows® Small Business Server 2003 to host multiple remote desktop sessions, is illegal? Related: My answer to question Has windows XP support multiple remote login session (RDP) at a time?

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• How to copy mailboxes from Exchange 2003 to Exchange 2007 across forests?

  - by Tor Ivar Larsen

  Hi. Were going through a quite difficult conversion from an old ASP-solution to an entirely new one. This includes moving mailboxes from Ex2003 to Ex2007. We want to do this without deleting the old mailboxes on the Ex2003 server, to have a "fall back" in case somehing goes wrong. I have investigated the "Move-Mailbox" cmdlet in the Ex2007 shell, and it seems to fit our needs quite well. The only problem being that we want to keep the old mailboxes. This could easily be accomplished with the -SourceMailboxCleanupOptions, but we can't use this when we have used the -AllowMerge switch. The reason we need -AllowMerge is because all the user accounts with connected mailboxes are already created on Ex2007(Some automatic user creation tool, no real relevance to the case in question) The twist is that the exchange servers are in two different forests... Windows 2003 SP1 on DC1, Windows 2003 SP2 on DC2 in forest 1. Windows 2003 R2 SP2 on DC1 in forest 2. Can we use the Move-Mailbox safely for this purpose? And if yes, how?

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• Hyper-V Virtual Machine won't respond over network

  - by Brad Gignac

  Recently, one of our Hyper-V virtual machines has periodically stopped responding over the network. It seems to be happening every few days, and it occasionally happens up to several times a day. I am by no means a sysadmin, so any direction you guys could provide would be very welcome. I've included everything I know to include below. If you need any additional information, I'll be glad to include it. I can connect through the Hyper-V console. I can't connect to network shares, IIS web apps, using RDP, or using ping. Memory usage seems to be normal (3 of 4 GB) Processor usage seems low. We don't know the exact time the server goes down, but the following error appears consistently around the time it goes down: Error 5719, NETLOGON This computer was not able to set up as secure session with a domain controller in domain *** due to the following: There are currently no logon servers available to service the logon request. This may lead to authentication problems. Make sure that this computer is connected to the network. If this problem persists, please contact your domain administrator.

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• Linux DHCPD Mac-Address based Groups

  - by GruffTech

  Our Current DHCPD.conf looks like the following. subnet 10.0.32.0 netmask 255.255.255.0 { range 10.0.32.100 10.0.32.254; option subnet-mask 255.255.255.0; option broadcast-address 10.0.32.255; option domain-name-servers 208.67.222.222,208.67.220.220; option routers 10.0.32.5; host Dev-ABaird-W { hardware ethernet 00:1D:09:3E:49:13; fixed-address 10.0.32.94; } ... more static hosts .... } About as basic as it gets. The old router is 10.0.32.1, our company wanted to implement a squid proxy to better monitor web traffic while at work, and if necessary block large time-wasters, IE Facebook.com. However, we've quickly realized that this change has played a mean prank on our Polycom SIP Phones. Occasionally our phones will not ring, the end recipient hears ringing (this is artificially created by our PBX) however the handset never rings. The ONLY thing that has changed in our network is the option routers line. So, Since all Polycom MAC addresses begin with 00:04:F2 would it be possible in DHCP to say any 00:04:F2:::* MAC addresses get option routers 10.0.32.1, and anything else must talk with our Gateway?

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• Linux Tuning for High Traffic JBoss Server with LDAP Binds

  - by Levi Stanley

  I'm configuring a high traffic Linux server (RedHat) and running into a limit I haven't been able to track down. I need to be able to handle sustained 300 requests per second throughput using Nginx and JBoss. The point of this server is to run checks on a user's account when that user signs in. Each request goes through Nginx to JBoss (specifically Torquebox with JBoss A7 with a Sinatra app) and then makes an LDAP request to bind that user and retrieve several attributes. It is during the bind that these errors occur. I'm able to reproduce this going directly to JBoss, so that rules out Nginx at least. I get a variety of error messages, though oddly JBoss stopped writing to the log file recently. It used to report errors about creating native threads. Now I just see "java.net.SocketException: Connection reset" and "org.apache.http.conn.HttpHostConnectException: Connection to http://my.awesome.server:8080 refused" as responses in jmeter. To the best of my knowledge, I have plenty of available file handles, processes, sockets, and ports, yet the issue persists. Unfortunately, I have very little experience tuning servers. I've found a couple useful documents - Ipsysctl tutorial 1.0.4 and Linux Tuning - but those documents are a bit over my head (and just entering the the configuration described in Linux Tuning doesn't fix my issue. Here are the configuration changes I've tried (webproxy is the user that runs Nginx and JBoss): /etc/security/limits.conf webproxy soft nofile 65536 webproxy hard nofile 65536 webproxy soft nproc 65536 webproxy hard nproc 65536 root soft nofile 65536 root hard nofile 65536 root soft nproc 65536 root hard nofile 65536 First attempt /etc/sysctl.conf sysctl net.core.somaxconn = 8192 sysctl net.ipv4.ip_local_port_range = 32768 65535 sysctl net.ipv4.tcp_fin_timeout = 15 sysctl net.ipv4.tcp_keepalive_time = 1800 sysctl net.ipv4.tcp_keepalive_intvl = 35 sysctl net.ipv4.tcp_tw_recycle = 1 sysctl net.ipv4.tcp_tw_reuse = 1 Second attempt /etc/sysctl.conf net.core.rmem_max = 16777216 net.core.wmem_max = 16777216 net.ipv4.tcp_rmem = 4096 87380 16777216 net.ipv4.tcp_wmem = 4096 65536 16777216 net.core.netdev_max_backlog = 30000 net.ipv4.tcp_congestion_control=htcp net.ipv4.tcp_mtu_probing=1 Any ideas what might be happening here? Or better yet, are there some good documentation resources designed for beginners?

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• Swap static public IPs without creating DNS conflicts?

  - by Jakobud

  Our ISP is Comcast and we have 5 static public IPs from them that we use for various services, including customers connecting to our network, VPN, web, DNS, etc... We need more IP addresses from Comcast. Unfortunately, Comcast is telling us that they can't just simply give us 5 more addresses. They only give static IP addresses in blocks of 1, 5 or 13. In order for us to get more static IPs, they have to take away our current 5 static IPs and give us 13 new ones. How do we make this transition without causing all sorts of DNS chaos? We run public DNS servers, so we can make the DNS changes ourselves, but it will take some time obviously for those DNS changes to propagate throughout the internet. Are there any easy ways to make this transition? Like create some type of fallback DNS entry or something? Surely there must be some sort of procedure for this kind of thing. The Comcast support guy was useless.

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• Choose identity from ssh-agent by file name

  - by leoluk

  Problem: I have some 20-30 ssh-agent identities. Most servers refuse authentication with Too many failed authentications, as SSH usually won't let me try 20 different keys to log in. At the moment, I am specifying the identity file for every host manually, using the IdentityFile and the IdentitiesOnly directive, so that SSH will only try one key file, which works. Unfortunately, this stops working as soon as the original keys aren't available anymore. ssh-add -l shows me the correct paths for every key file, and they match with the paths in .ssh/config, but it doesn't work. Apparently, SSH selects the indentity by public key signature and not by file name, which means that the original files have to be available so that SSH can extract the public key. There are two problems with this: it stops working as soon as I unplug the flash drive holding the keys it renders agent forwarding useless as the key files aren't available on the remote host Of course, I could extract the public keys from my identity files and store them on my computer, and on every remote computer I usually log into. This doesn't looks like a desirable solution, though. What I need is a possibility to select an identity from ssh-agent by file name, so that I can easily select the right key using .ssh/config or by passing -i /path/to/original/key, even on a remote host I SSH'd into. It would be even better if I could "nickname" the keys so that I don't even have to specify the full path.

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• Changing default openVPN IP in linux server

  - by Lamboo

  The problem is that we have a public OpenVPN service. Pay €9.95 and you get an OpenVPN account at currently half a dozen of servers for a month. This means there are always and will always be some people who create a certain amount of abuse or trouble. On the long run, the external IP every OpenVPN user gets assigned is prohibited from editing Wikipedia, it might be banned by e-gold and on some popular webforums, one-click-hosters, etc. Not a pleasant experience for the 97% of our customers who use our service responsibly and legitimately to regain their privacy. So even if I could change the assigned external IP every few months; e. g. from 216.xx.xx.164 to 216.xx.xx.170, it would help us a lot to combat this abuse and to provide our paying clients with "fresh" IP addresses that aren't banned or restricted on some popular Internet sites and services, yet. Does anybody know how to change the first IP address assigned to the public interface in CentOS? So that e.g. OpenVPN in future doesn't give our OpenVPN clients the external IP 123.xx.xx.164 but rather 123.xx.xx.170?

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• Hosting websites in our Workplace custom-built datacentre

  - by i.h4d35

  I'm faced with unique learning opportunity at work at the moment. Due to the slowdown (amongst other reasons), the powers that be at my office have decided to abandon our shared hosting providers (both shared and dedicated hosting) and have decided to host the websites at our office's datacentre. We're running 7 websites, wherein the average unique hits per day at the moment is about 900. We have 2 servers set aside for this - one is a DELL POWER EDGE 1850 (Intel Xeon 3 GHZ*2, 4GB RAM, 73GB HDD and the other is an HP DL 380 G3 (Intel Xeon 2.8 GHz, 6 GB RAM, 73 GB HDD) a) I would like to know the pros and cons of going ahead with this project.All the sites will be hosted on a single IP. In all probability, the OS is going to be CentOS. b) Do you think I should consider Virtualization into this equation (KVM/Xen)? I was thinking in terms of separate instances of the DB server and the frontend though I do not know if this is the best way to go. c) Should I be trying to use cloud stacks like OpenStack and try to make it look like websites hosted on some sort of Public Cloud? (something that I checked out here). Here is something else I came across, which looks similar to what needs to be done at our office. About the websites - Of the 7 websites, 4 are basic static websites which basically gives a whole lot of information about a few local institutions. The remaining 3 are local product-based websites developed in PHP wherein end user can view products and order them online. I am trying to take this as a learning experience wherein I can learn to build something from scratch and save the company a little something in the process. The migration needs to be completed by Easter so I guess it gives us some time (or am I being overly optimistic??). I am confused here and would appreciate all the help I can get. Thanks in advance.

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• Help with memory usage issues on VPS

  - by Niall Collins

  Hi there, I am running a VPS server with 6 .net web sites/applications running on it. I am having issues with performance on the server, mainly it running out of memory. I contacted the company that lease the server to me and they told me it was because I also had sql server 2008 express also running on the server. So I went ahead and removed this, uninstalled etc. However I still seem to be having issues. For example at present, looking at resource consumption, the virtual memory is: ID: vprvmem Current Use: 894,328,832 bytes Limit: 1,073,741,824 bytes This means useage of ~80%. Is there any way I can check out exactly that applications, web sites, software is taking up most of the servers memory, so I can look at rectifying it. I feel that 80% is much to high to allow for contingency for a spike in traffic. I have got extra memory resources added to the box recently, but I would prefer finding the source of the problem rather than throwing extra memory at it. Maybe these levels are correct and alls running ok, but would like to investigate it to make sure. My knowledge of hardware is limited as I mostly deal in the spectrum of software. So any tools out there that can help me or any pertient advice.

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• Dos/ Flood Lag even though Port not Saturated

  - by Asad Moeen

  My GameServers had been under some UDP Floods due to which they generated outputs to the attacker which gave the GameServers some huge lags. Thanks to friends at ServerFault that upon different kind of testing, I was able to successfully block the attack. My question is actually something else but it is important to know how the GameServers reacted to the attack and if the machine kept stable or not: 300kb/s Input would cause GameServer to generate 2mb/s Output. So as the Input Rate kept increasing, output rate would reach so high that it would no longer be possible for the GameServer to control it and hence it would give a huge Lag until the attack is stopped. Usually the game server starts to lag when it sends out something greater than 5mb/s and under that is controllable. Theoretically, I was able to receive a 60mb/s output from my GameServer on inputting 10mb/s. Its just the way the GameServer works if not protected. Now on some of my machines, only the GameServer under attack lagged and although the server was generating 60mb/s output, rest of the gameservers on other ports would run fine without lags on the same machine. But there was another machine which also runs on a 100 MBPS Network port, even 1 mbps input ( and ZERO output because attack is blocked ) even on an unused port would give a constant yellow line ( on the Lag-o-Meter ) to all the clients on all GameServers indicating lag because that line is actually blue under normal conditions. It would remain the same even on 50mbps or 900mbps input. I tried contacting the host about it because I believe its the way their Network is bridged, but they can't help me about it. Anyone else knowing about such issues because if 900mbps input does not Saturate the port, how can 1mbps input lag the servers although port is not saturated and enough bandwidth is available?

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• How do i set up a fully featured small business network?

  - by JoshReedSchramm

  This has the possibility to be a very large question but I recently acquired a few rack mount servers and the hardware necessary to run them. Unfortunately I'm a programmer with very little understanding of how to set up a good working network so I'm hoping someone on here might be able to help. What I want to do is run a domain with a series of subdomains which would all be externally accessible. The setup would live inside my home and my internet connection is your run of the mill cable model (which means a dynamic IP) I want to be able to set up a couple site, specifically: www.mycompany.com (mycompany.com with no subdomain would redirect to this) build.mycompany.com (for my continuous integration server) ruby.mycompany.com (for ruby projects) win.mycompany.com (for windows project) etc. Additionally this is still my home network so our personal machines need to be able to get on via wifi with at least the same security we have now through an out of the box router from best buy. I'm thinking i need a DNS server, DHCP server and one of those would run either no-ip or dyndns to accommodate the dynamic ip. I don't necessarily need mail but it might be helpful to have some sort of mail server i could use for testing, it doesn't need to get out to the greater internet though. So how do i set up this kinda of network? tl;dr Need to know how to set up your standard office style network in my home off my normal consumer level cable modem connection.

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• network latency, TCP and UDP packets

  - by user115848

  Hello recently my network has started to cause me lots of problems. I have a cable modem, connected to a tp-link router (with some port forwarding). Everything was working fine then i started to get lots of udp (port 53) "UNREPLIED" logs in the router. Now there are tcp UNREPLIED logs too. This is causing lots of latency and failed connections when trying to connect to different internet sites. Also, we run an openfire server for spark connections, and I believe its causing connectivity issues for some users who are trying to connect using Spark (some people connect fine, others don't). Please see screen shot below for packet logs. It has to be something internally, as I connected straight to the comcast modem and i was able to connect to the internet and various sites as normal. I tried to swap out the router with a different and got the same issue. I scanned both my internal dns servers for viruses or malware and it came up empty. Another anomaly is that when i try to connect to www.cnn.com, i get redirected to the different site. I scanned my own machine for hijacks. Not sure if this is related to the networking issue. Please let me know if you have any ideas for troubleshooting.

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• Cannot login to ISCSI Target - hangs after sending login details

  - by Frank

  I have an ISCSI target volume, to which i am trying to connect using CentOS Linux server. Everything works fine, but cannot its stuck at login. Here are the steps i am performing: [root@neon ~]# iscsiadm -m node -l iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session20 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session21 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session22 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session23 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session30 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session31 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session78 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session79 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session80 iscsiadm: could not read session targetname: 5 iscsiadm: could not find session info for session81 Logging in to [iface: eql.eth2, target: iqn.2001-05.com.equallogic:0-8a0906-ab4764e0b-55ed2ef5cf350a66-neon105, portal: 10.10.1.1,3260] (multiple) After this step, its stucks, waits for some time and then gives this output: Logging in to [iface: iface1, target: iqn.2001-05.com.equallogic:0-8a0906-ab4764e0b-55ed2ef5cf350a66-neon105, portal: 10.10.1.1,3260] (multiple) iscsiadm: Could not login to [iface: eql.eth2, target: iqn.2001-05.com.equallogic:0-8a0906-ab4764e0b-55ed2ef5cf350a66-neon105, portal: 10.10.1.1,3260]. My iscsi.conf is this: node.startup = automatic node.session.timeo.replacement_timeout = 15 # default 120; RedHat recommended node.conn[0].timeo.login_timeout = 15 node.conn[0].timeo.logout_timeout = 15 node.conn[0].timeo.noop_out_interval = 5 node.conn[0].timeo.noop_out_timeout = 5 node.session.err_timeo.abort_timeout = 15 node.session.err_timeo.lu_reset_timeout = 20 node.session.initial_login_retry_max = 8 # default 8; Dell recommended node.session.cmds_max = 1024 # default 128; Equallogic recommended node.session.queue_depth = 32 # default 32; Equallogic recommended node.session.iscsi.InitialR2T = No node.session.iscsi.ImmediateData = Yes node.session.iscsi.FirstBurstLength = 262144 node.session.iscsi.MaxBurstLength = 16776192 node.conn[0].iscsi.MaxRecvDataSegmentLength = 262144 discovery.sendtargets.iscsi.MaxRecvDataSegmentLength = 32768 node.conn[0].iscsi.HeaderDigest = None node.session.iscsi.FastAbort = Yes Also, in access control, i have given full access to Any IP, Any CHAP user and fixed iscsi initiator name. With same access level, all other volumes on rest of servers are working, except this one.

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• Filezilla client unable to get directory listing from Filezilla Server (Windows)

  - by sestocker

  I've set up a self signed certificate in FileZilla server and enabled FTP over SSL/TPS. When I connect from the client FileZilla, I am able to authenticate but cannot get a directory listing: Status: Connecting to MY_SERVER_IP:21... Status: Connection established, waiting for welcome message... Response: 220-FileZilla Server version 0.9.39 beta Response: 220-written by Tim Kosse ([email protected]) Response: 220 Please visit http://sourceforge.net/projects/filezilla/ Command: AUTH TLS Response: 234 Using authentication type TLS Status: Initializing TLS... Status: Verifying certificate... Command: USER MYUSER Status: TLS/SSL connection established. Response: 331 Password required for MYUSER Command: PASS ******** Response: 230 Logged on Command: PBSZ 0 Response: 200 PBSZ=0 Command: PROT P Response: 200 Protection level set to P Status: Connected Status: Retrieving directory listing... Command: PWD Response: 257 "/" is current directory. Command: TYPE I Response: 200 Type set to I Command: PORT 10,10,25,85,219,172 Response: 200 Port command successful Command: MLSD Response: 150 Opening data channel for directory list. Response: 425 Can't open data connection. Error: Failed to retrieve directory listing I have ports 21 and 50001 through 50005 open on the firewall. We are migrating servers - the 50001 - 50005 is one of the things that helped get FTPS working on the old server. I'm not sure this installation would use the same ports? What else could be the problem?

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• Distributed File Systems.

  - by GruffTech

  So, I've been reading several articles around ServerFault as well as google. (For Example, this link) My Requirements are very similar to the link above, however i'd like to also have dynamic or at least resizeable file volumes, so if necessary i can add 4-5 servers to the pool, and then expand the volume. Any Distributed File systems that support that, to save me some time? Thanks! LustreFS will be my next test cluster to build. GlusterFS I've build a 3-machine test GlusterFS cluster, However i quickly became aware of several of its limitations that it doesn't seem to make clearly public. One, i can't seem to resize a volume. Once a volume is created, its done. Which seems retarded, why have a fully scalable file system if i can't scale a volume? So maybe i'm doing something wrong. I'm not sure. AmazonS3 while gives the cheapest startup adds too much cost when broken down to per client per month, so its out. Building my own system when prorated over several years with no bandwidth costs makes it significantly cheaper. MogileFS isn't an option as we'd like this server to be a SAN-Replacement, for storing tons of media from a multitude of systems, which for us means it needs to be POSIX compliant so it can be remotely mounted via NFS or CIFS.

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• RoboCopy errors on Windows Server 2008

  - by Steve

  I am getting bizarre error with RoboCopy in Server 2008. It will randomly hang with "The specified network name is no longer available." error. Once that happens, it will continue to fail on the retries. But of course the remote server IS still available on the network and can be reached with other tools. I think it must be somehow permission related but I can't figure out what is wrong. Any ideas would be much appreciated. Other info: Options : *.* /S /E /COPY:DAT /NP /R:10 /W:30 If I turn on the /B option it will fail 100% of the time at the very beginning (that's why I think it has to be somehow permission-related) The two servers are standalone and I am doing a NET USE command prior to the robocopy It does not matter what user account on the remote server. Tried both Administrator and another user which was also a member of the local Administrators group UAC is turned off on both sides It is not always the same file that hangs. Sometimes it will get through half or more and sometimes it will fail on the first file

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• All websites migrated from server running IIS6 to IIS7

  - by Leah

  Hi, I hope someone will be able to help me with this. We have recently migrated all of our clients' sites to a new server running IIS7 - all the sites were originally running on a server running IIS6. Ever since the migration, lots of our clients are reporting error messages. There seems to be quite a number of issues related to sending emails and also, we have had the following error message reported by several different clients: Server Error in '/' Application. -------------------------------------------------------------------------------- Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Web.HttpException: Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that <machineKey> configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster. I have read elsewhere that this error can appear if a button is clicked before the whole page has finished loading. But as this error has now appeared on multiple sites and only since the server migration, it seems to me that it must be something else. I was wondering if someone could tell me if there is something specific which needs to be changed for .NET sites when sites are moved from a server running IIS6 to a server running IIS7? I don't deal with the actual servers very much so I'm afraid this is very much a grey area for me. Any help would be very much appreciated.

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