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• Automatically send a string when opening a raw connection in putty

  - by MBraedley

  I have a program running on a server that accepts TCP/IP connections on a specified port. When a connection is made, this program waits for the user (i.e. me) to send a string which identifies the type of user. Once the user identifies themselves, the program will start sending data that is relevant to that user type. I want to automate the first step and have putty automatically send the user identification string once the connection is made. I've been through the settings, and can't seem to find anything like "send following commands on connection". Any help would be appreciated.

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• Remove a known network from Windows 8

  - by Edward Brey

  When Windows 8 detects a network based on the assigned IP address, netmask, default gateway, etc., it remembers the network along with the setting you give it as a public or private network. If you change the configuration of a network (e.g. reconfigure your router), Windows may determine you are on a new network and assign it a name of Network 2 or YourAPN 2. This less-than-friendly name shows up in many places in the Windows 8 UI, but unlike the good old days of Windows 7, there doesn't appear to be any UI to merge or delete these networks. What's the best way to merge or delete networks you don't want?

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• Apache ProxyPass/ProxyPassReverse to IIS

  - by Dana

  We have an ASP.NET web application which is mapped to a folder on an apache hosted php site using ProxyPass.ProxyPassReverse. A couple of problems being encountered. cookies are being lost which breaks the site navigation, this can be overcome by setting the asp app as cookieless. Forms authentication is used on the ASP site, this is also broken withe the proxypass in place, suspect this is cookie related also. ASP site works ok when run from a domain/ip address. Use of a separate domain / sub-domain is not an option duew to client requirements.

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• private subnet nat (openvpn / racoon)

  - by Jonas Schnelli

  I have a openvpn subnet 10.8.0.0/24 running one server and one client (laptop). openvpn works fine. Browsing the web over openvpn from the laptop works also fine. Now on the server there is a private subnet with 10.7.8.128/28. The subnet is set up with racoon (IPSEC s2s vpn). The s2s vpn allows me to access the subnet 10.3.5.0/24 at the other s2s vpn end. Works all fine when I'm connected with ssh to my server. From my laptop i can ping 10.7.8.129 (the servers ipsec local ip) but i cannot reach the net 10.3.5.0/24. I tried to add a static route on my laptop 10.3.5.0/24 over gw 10.7.8.129 with no success. Any ideas how i do setup the nat / routing? Thanks

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• Can only connect to sql server express 2012 via named pipes

  - by YetAnotherDeveloper

  I have sql server express 2012 installed on windows 2008, locally everything works just fine i can connect via tcpip and named pipes. Remotely i can connect with ssms only using named pipes. I have tried disabling the firewall on both sides to eliminate blocking traffic. i have toggled the tcpip setting on and off (i read somewhere that they got it working just but flipping them off and back on). I have double/triple checked all the settings that i'm aware of and everything seems to be correct. Tcp is enabled Tcp port is set to 1433, udp port is set to 1434 Server has static ip Start up log says: Server is listening on [ 'any' 1433]. Firewall rules are in place Any suggestions on things that i can look into? i have really just run out of ideas.

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• Windows Server 2003: Router, DHCP, Looses internet connection

  - by jM2.me

  I have following setup: a windows server 2003 dedicated server with tho nics. One is connected to internet (no modem/router), and second one is connected to private network. Server has DHCP server installed on it and internet nic is being shared for internet access. The problem is sometimes server looses connection to the internet, so same happens to private network. So far I can manually fix it by releasing and renewing IP address. What could be the cause of this problem? DHCP lease from ISP? Thanks

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• Unable to get to remote samba share

  - by tubaguy50035

  I have a remote VPS that I would like to setup samba on and only allow my IP access to it. I currently have in my smb.conf: [global] netbios name = apollo security = user encrypt passwords = true socket options = TCP_NODELAY printing = bsd log level = 3 log file = /var/log/samba/log/%m debug timestamp = yes max log size = 100 [hosting] path = /hosting/ comment = Hosting Folder browseable = yes read only = yes guest account = yes valid users = nick I have the ports (137,138,139,445) open in iptables (they're open to everyone right now while I debug) and I see nothing in the syslog about iptables blocking my requests. When I try to open a file browser to my address \\ipaddress, it hangs for a good thirty seconds, and then opens a log in box. I enter my user name and password for the server, hit okay. It then opens the same box, I enter my credentials again and hit enter. Windows then tells me it could not connect. My user account is added to Samba already. Anybody have any suggestions what I can do to get this working?

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• Dhcp clients fail after successful import of server to new machine (win2k3)

  - by Tathagata

  I transfered the configs of a dhcp server from one server to another both running Windows Server 2003 R2 following http [://] support.microsoft.com/kb/325473. The new server has a statically configured ip(outside the scope) like the old one. Stopped the server on the old, and started up in the new server (authorized too) - but when I ipconfig /renew from a client its network interface fails with all 0.0.0.0 (or 169...*). I read somewhere I need to reconcile the scope to sync the new registry values ('ll try this tomorrow). What other troubleshooting steps can I take other than these (which didn't help)? Things work fine when the old server resurrects and the new one is taken down. The new server showed there was no requests for offer.

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• Preventing my postfix to send my local users spam

  - by Jack

  I have a postfix/dovecot mail server with 100 different users. When they send an email they need to be authenticated. I successfully use saslauth to achieve this. Few days ago I had a problem. One specific user, probably with a virus or a spam-bot installed in its computer, started to send out through my server thousands of emails in few hours. As result, my ip has been blocked by many isp provider (@aol, @yahoo, and others) and has been listed in many blacklist, making all my 100 users unable to send any email to anyone. What is the best practice to avoid this problem? It would be great if my server could recognize a spamming user and automatically block it. Also, have a limit of, say, 30 emails per hour could be a partial solution. Any idea how to face this problem? Thank you

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• Dediced server for all network functions?

  - by Alan

  I want to set up a fictional network configuration for a school in my neighborhood. They have about 50 computers altogether, 2X20 in computer rooms for students and another 10 scattered around for various professors. They should all access the internet through a dedicated Linux router machine. What they would like is to have domain names for those three computer groups. Lab1, Lab2 and Professors. The computers in Lab2 and Lab1 should have static ip and should all be named by numbers. So there should be 1@Lab1, 2@Lab1.... etc. And the Professors network should have a DHCP, with authentication. Is it an ok solution to have all these functions on a single server? (The one which will be used as a router) Do I have to set a local DNS for domain naming? Do the host names for Lab computers have to be set on the clients, or can they be automatically assigned?

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• vmware player - ubuntu can resolve hostname but ping fails

  - by recursive_acronym

  Using VMware players on Windows 7 with a Ubuntu 10.04 guest. When I ping it resolves the ip address but the ping fails. Hopefully this is a local issue as I don't have access to any of the network equipment (routers, etc). vmware tools is installed. Is there any other information I can provide to help resolve this? eth0 Link encap:Ethernet HWaddr 00:0c:29:83:4f:c0 inet addr:192.168.163.129 Bcast:192.168.163.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fe83:4fc0/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:475 errors:0 dropped:0 overruns:0 frame:0 TX packets:179 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:50006 (50.0 KB) TX bytes:16701 (16.7 KB) Interrupt:19 Base address:0x2024 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:480 (480.0 B) TX bytes:480 (480.0 B)

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• localhost works 127.0.0.1 does not IIS

  - by NickatUship

  Very weird problem on IIS. Never had it before: localhost works, but 127.0.0.1 does not. localhost pings to 127.0.0.1. www.mydomain.com also pings to that IP, which is set up in the hosts file, but that also doesnt work locally. I've ipconfig /flushdns 'd without success. Ive even restarted the server. Another server set up the exact same way works fine. Any ideas? To be clear, im accessing the URLs in IE like this: http://localhost http://127.0.0.1 http://www.mydomain.com I can telnet to port 80 without a problem for all 3

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• virtualbox port forwarding - firewall config

  - by Roose

  i have a ubuntu host system with virtualbox running a windows server. In Virtualbox i have configured the network with a NAT interface and port forwarding for the RDP deamon running inside the vm. That works really well - i can connect to the windows rdp service over the internet. TCP *:3389 - *:3389 Now i like to restrict the access to the rdp service to only 3 public ip addresses and have no idea how to do that via iptables / shorewall. Something like: ACCEPT net:91.x.x.x fw tcp 3389 (shorewall rule) isn't working. Would be glad for any hint.

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• Remote desktop won't connect to Win7 Vmware Virtual machine

  - by Rodniko

  created a Virtual machine using VMware. The VM is on and i succeeded to login and work on it with the Vmware console. now i want to use the "remote desktop connection" to connect to it. i enabled the remote access on the home premium Win7 that i installed on the VM. in the Remote Desktop i entered the ip (same network (home network))). it just won't connect. i also disabled the firewall on the Win7 , but it still won;t connect. i have another VM with the same Win7 that remote desktop works fine with.

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• Getting started with the vCenter Web Client Administration tool

  - by Saariko

  I am trying to access a newly vCenter. The documentation clearly mentions to access the web-admin through: https://localhost:9443/admin-app but since I don't have a windows OS built under the vCenter (I use the vCenter Appliance) There is no localhost to use. If I try with the host IP I get the error: This PDF explains to install IIS component - But it's ESX 4 - and also not talking about appliance. so, a simple question: how can I access the web-app admin tool? also found a similar question on vmware forum. But I can't understand the solution/if any.

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• Setting up a linux switch

  - by Shahmir Javaid

  I have a C++ Program to sniff each and every packet that crosses my linux box. However i need to now get my linux box to listen to every traffic in my network. I could buy a managed switch and set up port spanning, but i aint paying 200+ £'s for a switch and plus gives me a chance to learn. My Network +---------Computer A | Internet-----Router------Switch-------------+---------Linux Box | +---------Computer B Proposed Network +---------Computer A | Internet-----Router------Linux Box--------Switch eth0^ ^eth1 | +---------Computer B How would i setup this in linux. Do i just configure both the ethernet on different IP Address on the same network. Or am i completelly on the wrong track My System Fedora 13. Thanks

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• Mail being delivered to both old and new server.

  - by Duane

  Two days ago I migrated our old site to a new server. I turned down the ttl before I did it and some email is still going to our old server and some to our new after a little over 48 hours. Both these are on shared hostgator sites. From what I can tell everything is set up properly. An nslookup points to the right ip address. Any insight? Support just tells me that everything is set up properly and I have to wait for propagation. I've never had it take over 48 hours though.

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• apache httpd cannot browse through browser

  - by nuttynibbles

  i've setup apache and php on a virtual machine. everything works fine in the virtual machine. im able to execute php files and run up phpmyadmin connecting to mysql. on my host machine, im able ping and ssh into the remote machines. however, im unable to browse the php files on the host browser using the ip address. in my httpd.conf, im listening to port 80. i enabled the ServerName 192.168.75.102:80 am i missing some settings? port settings maybe?

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• NATing with a single-homed machine possible?

  - by Harry

  I have the following setup: a) a single-homed machine, A, that can see the Internet. b) other machines B, C, and D that cannot see the Internet. c) A, B, C, and D can see each other. d) all machines are running either RHEL 5.3 or Fedora 16. Question: Is it possible to have B, C, and D share the Internet connection with A somehow? Note, again, that machine A does not have a second NIC installed. (The solutions that I am finding on the Net assume A to be a dual-homed system!) Also, could you please recommend a set of book(s) or online resources for a current and in-depth coverage of iptables for people with only a basic knowledge of TCP/IP?

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• Remote connection to Mysql not working

  - by Fillipe Silva

  We have an application running with CodeIgniter and MySQL in cestacerta.com. Ther are two versions: One that is in production and it works perfectly, and one that is our Development version. This runs locally on my machine and the other developers. The development version needs to remotely connect to the database, and it rather suddenly stopped working. I've given permission to access any IP settings on the server. I can access the database through the MySQL Gui Tools. I have tested access to several different codes, including a newly downloaded version of CodeIgniter and always got the same error: "A Database Error Occurred Unable to connect to your database server using the provided settings. Filename: C: \ xampp \ htdocs \ cestacerta \ system \ database \ DB_driver.php Line Number: 119 " What troubleshooting steps can I take determine if the error is on our workstations (which all have the same error) or on our server.

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• Squid stale-while-revalidate not working when max-age=0

  - by Wiliam

  Squid 2.7 always reaches backend, expected is to reach backend using stale-while-revalidate only when cache expires, not when client triggers max-age=0. Script: <?php header('Cache-Control: public, max-age=10, stale-if-error=200, stale-while-revalidate=500'); header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT"); sleep(2); die("OK"); And squid config: # http_port public_ip:port accel defaultsite= default hostname, if not provided http_port 80 accel defaultsite=mydomain.com # IP and port of your main application server (or multiple) cache_peer 127.0.0.1 parent 8000 0 no-query allow-miss originserver name=main # Do not tell the world that which squid version we're running httpd_suppress_version_string on # Remove the Caching Control header for upstream servers header_access Cache-Control deny all #header_access Last-Modified deny all # log all incoming traffic in Apache format logformat combined %>a %ui %un [%tl] "%rm %ru HTTP/%rv" %Hs %<st "%{Referer}>h" "%{User-Agent}>h" %Ss:%Sh access_log /usr/local/squid/var/logs/squid.log combined all cache_effective_user squid refresh_pattern . 10080 90% 999999 ignore-no-cache override-expire ignore-private icp_port 0

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• IIS7 Rewrite rule being duplicated across 2 different websites (unwanted)

  - by Matt

  We have a IIS7 on Windows Server 2008. It is hosting a handful of sites, on a handful of ip addresses. 2 of those sites are actually wildcards on the domain: *.firstdomain.com *.seconddomain.com However, I am finding that any URL Rewrite rules I add for one of these "websites", is automatically in the URL Rewrite section for the other. Similarly, if I disable the rule in in one, it disables in the other. This doesn't happen with the other sites defined on this server, just these two. I look at the parent (top level, the server as a whole), and the rule is not there. Any idea what's going on here?

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• How to remove duplicate illegal site in apache configuration?

  - by zladuric

  I've recently found a referrer in the apache log on my site. Now, I opened it out of curiosity, since my site is live, but I just started development so I didn't expect it. Anyway, the site was a pure copy of mine, and after investigation I saw that it resolves to my IP. I'm on Ubuntu 12.04, Apache 2, drupal 7, don't know what other info can I provide. My question is: how can I tell apache that it should not serve this site? Thanks Edit: forgot to say that I had some bots register to my fresh drupal installation. Also, my domain is a tld, this fake domain is a third level (ie. sub.domain.de)

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• why do I get this mail server configuration error?

  - by Francesco

  <<The configuration of your mail servers and your DNS are not ok! The report of the test is: mail.mydomain.com. -> mydomain.com -> 78.47.63.148 -> static.148.63.47.78.clients.your-server.de Spam recognition software and RFC821 4.3 (also RFC2821 4.3.1) state that the hostname given in the SMTP greeting MUST have an A record pointing back to the same server.>> I have a A Record that points mail.mydomain.com to 78.47.63.148 (which is my given ip address for my vps) All other records are fine, so what's wrong and what record should I create to make it right? Thanks

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• NetDiag + TCP Blocking?

  - by CrazyNick

  We are facing some issue with the sharepoint 2007 timer jobs everyday at a specific time, so decide to track the tcp blocking informartion during those hours using NetDiag tool. We are not able to find the required information if we uses "netdiag /test:ipsec", what is the command that can be used to pull the TCP blocking information and how to configure it? if i ran the command "netdiag /test:ipsec /debug" it is returning "IP Security test . . . . . . . . . : Skipped", what does it mean?

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