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• How do you set up Ubuntu to see Windows Network?

  - by Axeman

  I've tried the various tutorials and no success so far. I can connect to the router and from there to the internet, but I cannot see any network shares. I'm connecting through wlan0. I would prefer to keep the dynamic IP address if possible.

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• Does exists a software that act as DHCP service?

  - by marco.ragogna

  I need to configure a network made by a simple old hub with 24-ports a server and some clients. Both clients and server has Windows XP or later. If all clients has the DCHP service enabled does exists a software that, installed on the server, assigns automatically to the clients an IP based on a predefined range?

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• Losing internet connectivity on server after installing LogMeIn Hamachi (with server set as gateway node)

  - by Kim Jong-Un

  Our domain controller (SBS 2003) completely lost internet and network connectivity yesterday after I remotely installed LogMeIn Hamachi on it and set it to be a gateway node- in an attempt to create a VPN link between the server and a remote site. I had to go in to the office to resolve the problem as, unsurprisingly, my own remote access to the server was also lost. I was only able to restore network connectivity by deleting a virtual network adapter Hamachi created when making the server the gateway node (called "Hamachi bridge" I believe), then rebooting the server. This is a repeatable problem. Every time I try to get this to work, it just takes the server offline. Why would this bridge affect regular TCP/IP connectivity on the NIC in this way? I have tried a "hub-and-spoke" configuration between the server and our PC at a remote site (server set as hub, remote site as spoke). This caused no such problems with general internet connectivity, and file transfer worked well between the two computers. However, there was a DNS issue with the VPN between the two sites- resulting in Active Directory not being able to communicate between them (could not log on using domain user accounts at remote site if they were not already cached on that machine). I only tried a "gateway" network as LogMeIn support told me: If you can get the Active Directory to work it would only be through a "Gateway" network type with the server acting as the Gateway Node. You would configure the gateway settings on the server in the Hamachi client on that machine to push whatever IP's/DNS settings you prefer and at that point AD would be able (all things being equal) communicate to the client node when it attaches. We do not have any ActiveDirectory configuration info as that's outside the scope of our support. I hope this helps. It would be fantastic if I could get Active Directory to work over a Hamachi VPN connection, without worrying about the server going offline in this way. Does anyone have any ideas how I should proceed, or any theories as to what is going on when I try to use the "gateway" network type? I want to try to narrow down what is going on here.

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• How to change the sender of admin mails on a Linux server

  - by Cédric Girard

  Hi, I am sure it is a dumb question, but I want to change the sender of mails sended by my Linux server (centos 5). All mails sent to user "dev" are forwarded via a /home/dev/.forward file, with this sender : [email protected]. host.mydomain.fr is the hostname of this server, but it's an internal server and it does not even have a public IP. How to have a sender like [email protected]? I try to change the "official domain name" (line begining by "Dj" but it change nothing). Regards Cédric

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• VLSM, Rip V1 and Rip V2

  - by uBlankText

  I am trying to understand some things about Rip V1 and V2 but i am not sure if i am right, As i know Rip V1 doesn't "advertise" subnet masks, and doesn't support VLSM. If i understand right Even if Rip V1 for example supports VLSM it doesn't matter, Becouse the Rip V1 Only "advertise" the IP address, If some one can please confirm/expand/correct me I will be very thankful, Thank you all and have a nice day.

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• connect remotely to apache2 on ubuntu 10.04

  - by ronakin

  I've apache2 server installed on a machine that connected to two different networks, therefore it has two different addresses: 192.168.1.111 (static ip on ethernet network) and 109.253.78.211. when connecting through 109.253.78.211 on the browser, the web pages are displayed perfectly, However, when connecting through 109.253.78.211 the web pages are displayed partially. I've not installed any firewalls. I'll really appreciate if you could redirect me to checks I should commit to reach the source of the problem. Thank you :)

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• Secret, unlogged, transparent, case-sensitive proxy in IIS6?

  - by Ian Boyd

  Does IIS have a secret, unlogged, transparent, case-sensitive proxy built into it? A file exists on the web-server: GET http://www.stackoverflow.com/javascript/ModifyQuoteArea.js HTTP/1.1 Accept: text/html, application/xhtml+xml, */* Accept-Language: en-US User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0) Accept-Encoding: gzip, deflate Connection: Keep-Alive Host: www.stackoverflow.com HTTP/1.1 200 OK Connection: Keep-Alive Content-Length: 29246 Date: Mon, 07 Mar 2011 14:20:07 GMT Content-Type: application/x-javascript ETag: "5a0a6178edacb1:1c51" Server: Microsoft-IIS/6.0 Last-Modified: Fri, 02 Tue 2010 17:03:32 GMT Accept-Ranges: bytes X-Powered-By: ASP.NET ... Problem is that a changes made to the file will not get served, the old (i.e. February of last year) version keeps getting served: HTTP/1.1 200 OK Connection: Keep-Alive Content-Length: 29246 Date: Mon, 07 Mar 2011 14:23:07 GMT Content-Type: application/x-javascript ETag: "5a0a6178edacb1:1c51" Server: Microsoft-IIS/6.0 Last-Modified: Fri, 02 Tue 2010 17:03:32 GMT Accept-Ranges: bytes X-Powered-By: ASP.NET ... The same old file gets served, even though we've: renamed the file deleted the file restarted IIS The request for this file does not appear in the IIS logs (e.g. C:\WINNT\System32\LogFiles\W3SVC7\) And this only happens from the outside (i.e. the internet). If you issue the request locally on the server, then you will: - get the current file (file there) - 404 (file renamed) - 404 (file deleted) But if i change the case of the requested resource, i.e.: GET http://www.stackoverflow.com/javascript/MoDiFyQuOtEArEa.js HTTP/1.1 Accept: text/html, application/xhtml+xml, */* Accept-Language: en-US User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0) Accept-Encoding: gzip, deflate Connection: Keep-Alive Host: www.stackoverflow.com Note: MoDiFyQuOtEArEa.js verses ModifyQuoteArea.js Then i do get the proper file (or get the 404 as i expect if the file is renamed or deleted). But any subsequent changes to the file will not show up until i change the case of the file i'm asking for. Checking the IIS logs all indicate that the (internet) requests are all coming the correct client on the internet (i.e. not from some intermediate proxy). Since the file doesn't exist on the hard drive anymore, i conclude that there is a proxy. The requests serviced from this proxy are not logged in the IIS logs. The requests for new files are logged, and from the client IP, not a proxy IP. The proxy is case sensitivie. This does not sound like something Microsoft, or IIS, would do: - a transparent proxy - case-sensitivie - unlogged - surviving restarts of IIS - surviving in a cache for hours i can't believe that our customer's IIS is doing these things. i'm assuming there is some other transparent proxy in front of IIS. Or, does IIS have a transparent, unlogged, case-sensitive, memory based, proxy, that caches content for at least 7 hours? (Come Monday morning, IIS is serving the correct file, unlogged).

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• Windows 3.11 on ESXi4 - network not works

  - by Gabor Garami

  Hi, I migrated my Windows 3.11 for Workgroups from VMware Workstation to ESXi 4.0U1 and the networking inside the guest machine has been stopped working. I reinstalled the network card driver, and changed to use static ip but it doesn't help. Pls help me.

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• Why is Denic not accepting my nameservers?

  - by Oliver Salzburg

  I'm currently in the process of moving all of our domains to our own nameservers. Which wasn't an issue until I hit our own .de domain. I (think I) understand the implications of having the NS inside it's own domain, hence the need for glue records. Until yesterday, I would have assumed I have a pretty good understanding of Bind and DNS zones until I was presented with this error from the Denic nameserver predelegation check: Inconsistent set of nameserver IP addresses (NS, provided glues, determined glues) ns2.hartwig-at.de [88.198.242.190/88.198.242.190] Default resolver determined: [], other resolvers determined: {88.198.242.190/88.198.242.190=[/2a01:4f8:d13:3c85:0:0:0:2, /88.198.242.190]} Inconsistent set of nameserver IP addresses (NS, provided glues, determined glues) ns1.hartwig-at.de [cloud.hartwig-at.de/176.221.46.23] Default resolver determined: [], other resolvers determined: {cloud.hartwig-at.de/176.221.46.23=[/2a00:1158:3:0:0:0:0:b6, /176.221.46.23]} Screenshot of the result The support of my registrar is either far better educated than me or doesn't have a clue. Either way, they're avoiding my questions in regards to what this error means. They just tell me Your nameserver has to return your own nameservers as the default resolver. But that doesn't make any sense to me and they refuse to try to explain it any other way. This is the head of my current zone file: @ 86400 IN SOA ns1.hartwig-at.de. hostmaster.hartwig-at.de. ( 2012070505 ; serial 1d ; refresh 3h ; retry 4w ; expiry 1h ) ; minimum 3600 IN NS ns1.hartwig-at.de. 3600 IN NS ns2.hartwig-at.de. 3600 IN MX 10 remote.hartwig-at.de. 3600 IN MX 20 mx1.hartwig-at.de. 3600 IN MX 30 mx2.hartwig-at.de. localhost 3600 IN A 127.0.0.1 localhost 3600 IN AAAA ::1 @ 3600 IN A 176.221.46.23 3600 IN AAAA 2a00:1158:3::b6 * 3600 IN A 176.221.46.23 3600 IN AAAA 2a00:1158:3::b6 hetzner 3600 IN A 88.198.242.190 hetzner 3600 IN AAAA 2a01:4f8:d13:3c85::2 cloud 3600 IN A 176.221.46.23 cloud 3600 IN AAAA 2a00:1158:3::b6 ; List all NS as A/AAAA record ns 3600 IN A 176.221.46.23 ns 3600 IN AAAA 2a00:1158:3::b6 ns1 3600 IN A 176.221.46.23 ns1 3600 IN AAAA 2a00:1158:3::b6 ns2 3600 IN A 88.198.242.190 ns2 3600 IN AAAA 2a01:4f8:d13:3c85::2 So, what is the problem with my zone? And what is the "default resolver"?

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• nginx connection time issue on some IPs

  - by sheldon

  I have recently shifted my server to nginx and php-fpm getting rid of apache. This has helped improves speeds of my website. Everything seems to work fine until i came across this issue, i noticed that nginx keeps throwing connection time out errors for only certain IPs. One of the IPs is my office IP, we have a backend that is accessed from our office through out the day. I use supervisord to launch 3 php-fpm processes with workers this is my typical php-fpm config pm.max_children = 50 pm.start_servers = 20 pm.min_spare_servers = 5 pm.max_spare_servers = 35 pm.max_requests = 300 Since i have a server with 4 cores and 2 GB ram this is my nginx setup worker_processes 4; worker_rlimit_nofile 8192; events { worker_connections 1024; use epoll; multi_accept off; } sendfile on; tcp_nopush on; tcp_nodelay on; keepalive_timeout 55; recursive_error_pages on; server_name_in_redirect off; server_tokens off; client_header_timeout 3m; client_body_timeout 3m; send_timeout 3m; connection_pool_size 256; client_header_buffer_size 8k; large_client_header_buffers 4 32k; request_pool_size 4k; output_buffers 4 32k; postpone_output 1460; proxy_buffer_size 32k; proxy_buffers 4 32k; proxy_busy_buffers_size 64k; proxy_temp_file_write_size 64k; fastcgi_connect_timeout 120; fastcgi_send_timeout 120; fastcgi_read_timeout 180; fastcgi_buffer_size 128k; fastcgi_buffers 4 256k; fastcgi_busy_buffers_size 256k; fastcgi_temp_file_write_size 256k; fastcgi_intercept_errors on; fastcgi_ignore_client_abort off; Where am i going wrong with the config, I have tried various settings but the issue still persists. These are the errors i keep getting 2011/11/13 18:20:33 [error] 21583#0: *311683 upstream timed out (110: Connection timed out) while reading response header from upstream, client: IP, server: tastykhana.in, request: "GET url HTTP/1.1", upstream: "fastcgi://unix:/var/run/php-fpm.socket:", host: "tastykhana.in", referrer: "url"

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• How to scan local network (LAN) for connected devices (MacOS)

  - by smotchkkiss

  I'm basically looking for something like this but available on Mac. I am trying to connect a new workstation to our wireless multifunction printer and I'm having a hell of a time getting the device to spit out an IP for me to connect to. Is there a way I can scan the network somehow? If it makes a difference, the new workstation is using MacOS X 10.6 Thanks in advance :)

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• Accessing webserver behind cheap router

  - by malfist

  I have a trendNET wireless/wired router, and inside the LAN I have a webserver on 192.168.10.103:80. Does anyone know how I can access the webserver from outside the LAN? I setup a "VirtualSever" to portforward publicIP:8080 to 192.168.10.103:80, but it never loads. Port scanning the external IP shows the port as "filtered" on the router, and from the inside, it shows 192.168.10.103:80 as open. Does anyone know how I can make this work?

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• Save a shortcut to a samba share in KDE

  - by jwaddell

  Using Dolphin in KDE I have opened a particular (password protected) samba share, by typing in the IP address and navigating to the right folder. However I can't find any way to save this location for future use (other than saving the URL to a text file and copy-pasting it into Dolphin). I would be happy with some kind of bookmark in Dolphin or a desktop shortcut, etc.

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• Routers with decent parental monitoring / traffic logging?

  - by antiver

  I'm looking for consumer router / firmware recommendations with reasonably robust remote URL / hostname logging & reporting functionality. Most logging functionality I've seen is terrible - reporting only IP addresses, not rolling up reports or reporting any useful statistics. The logs are also often limited to merely the last few minutes/hours when handling high-traffic loads. Bonus points for providing a screenshot of the log reporting interface!

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• Win 2k3 - DNS query ?

  - by nXqd

  I'm learning about network and I configured DNS in 2k3. In forward zone : cntt.edu www.cntt.edu [ 192.168.188.4 ] . [ All IP / DNS configuration is right ] After that I use wireshark to catch packet when I enter www.cntt.edu in IE . I see there's no DNS here, I forward directly to 192.168.188.4, there's no query . Any problem ? Thanks for reading this :)

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• wireless router on LAN

  - by Scott

  Hi, Can I put a wireless router (for a laptop to talk to) which is configured to use DHCP on our work LAN ? I just need the laptop to be able to talk to the internet. Will it automatically get the gateway information when it is assigned an IP via DHCP ? Thanks Scott

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• I am getting brute forced, what do I do

  - by Saif Bechan

  I am getting brute forced to my email server, IMAP and POP3. I have the full package of ASL installed but it just sends me the OSSEC logs. How can I ban the IP. I thought ASL automatically blocked these attacks after a few wrong tries. How can I do that.

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• Putty Help with @ Key

  - by jb0510

  I am new to putty. I am pushing files to a customer with sftp command that includes @ sign in the command. e.g. sftp (login@IP Address) the session will not allow @ on the command line. It bounces me to the next line. Can anyone tell me how to correct this.

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• What other protocols must not be fire-walled for FTP to work?

  - by Chris

  my Netgear router randomly reset itself the other day loosing all of my config settings: DSL details, Firewall rules, the lot! So I set about restoring all of the details manually, but when it came to configuring the firewall I wanted improve the security by explicitly setting 'deny' rules for everything that I figured is 'non-essential', and (although not necessary) whilst I was at it I set explicit 'allow' for the 'essential' protocols. I'll admit now I didn't really know what I was doing and everything was just 'my best guess', but I enabled only DNS, HTTP, HTTPS, FTP, SFTP, TFTP with everything else blocked. This did not work for me as I could not access 99% of web sites (although strangely Google worked!), so I played around a bit more and found that (oddly) if I disabled just the explicit 'allow' rules then everything worked fine, for browsing anyway. Today I came to work on some web-sites via FTP and just could not get a consistent connection, it kept dropping out after a few files or being blocked by the server or simply not connecting. It would authenticate okay but then stop when retrieving the initial directory listing! e.g.: Status: Delaying connection for 1 second due to previously failed connection attempt... Status: Resolving address of ftp.domain.co.uk Status: Resolving address of ftp.domain.co.uk Status: Connecting to 123.123.123.123:21... Status: Connecting to 123.123.123.123:21... Status: Connection established, waiting for welcome message... Status: Connection established, waiting for welcome message... Response: 421 Too many connections (8) from this IP Error: Could not connect to server Status: Delaying connection for 5 seconds due to previously failed connection attempt... Response: 421 Too many connections (8) from this IP Error: Could not connect to server Status: Delaying connection for 5 seconds due to previously failed connection attempt... I've checked and re-checked the FTP settings (they worked before anyway), I have Googled the I.T. out of the various protocols that I have blocked in the fire-wall but none seem essential to FTP (other than FTP/SFTP etc. which I have passively enabled). I'm (clearly) no server engineer, or protocols / fire-wall expert so I was hoping that some one could maybe shed some light on why my FTP is failing. I've been wondering if I ought to be allowing BGP, BOOTP and/or IDENT (or any others)? What other protocols are required for FTP? Thanks in advance!

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• Socks proxy on mac's shared internet

  - by AliBZ

  Hi all I use my mac's internet sharing to create wireless network for my ipod touch. I have a linux server and I use socks proxy. I wanna use this proxy on my ipod but i don't know how. I put my shared network connection behind the proxy with localhost ip but my ipod isn't behind the proxy. any ideas?

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• How to implement custom domain feature like posterous?

  - by Weiwei

  here is how posterous works, I make a A record of DNS of my domain (blog.mydomainname.com) to posterous IP address 67.207.139.81 , in the manage panel of posterous , i put my custom domain (blog.meetingly.com). Then i can reach my posterous blog http://mydomainname.posterous.com from http://blog.mydomainname.com url. How posterous implements this? Is this a DNS level thing or web server level setting? Thanks a lot!

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• Configuration Deployment to Linux Systems

  - by William

  Hello, I'm looking for a nice way to add / remote ips (and possibly interact with an asset inventory system to track where ips are), start / stop processes, download logs, and all around genearal system admin duties from one place. It's okay if I require more than 1 program. That would still be better than having 50 million terminals open and trying to trace ip assignments etc on whiteboards. I'd also like to know if anyone knows any good asset management programs. Best Regards, William

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• Does mailx send mail using an SMTP relay or does it directly connect to the target SMTP server?

  - by iamrohitbanga

  Suppose i send a mail using the following the following command: mailx [email protected] then does mailx first try to find out the SMTP server of my ISP for relaying the mail or does it connect directly. Does it depend on whether my PC has a public IP address or it is behind a NAT. How do I check the settings of mailx on my PC? How can I verify this using tcpdump?

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• DNS CNAME - SSL-certificate issue.

  - by Phoibe

  Hey, I have obtained an SSL certificate by Thawte for domain.com Now my infrastructure changed due to heavy load I have mx.domain.com as SMTP relay storage.domain.com as Mail-Storage and domain.com pointing at Web-Server Every server is hosted on another dedicated/virtual server with individual IP. I do not want to put the Web-Server on the Mail-Storage for security reasons but I do want to use my SSL-Certificate for the Mail-Storage(POP3S/IMAPS). Is that possible or how do I solve that issue?

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• Web site DNS configuration Without using hosting nameservers

  - by user39110

  Hi, i am publishing my website(www.muratturan.com) by using godaddy's "Total DNS Control". My configuration like this: 1-) I configured my domain to total dns control by setting nameservers to total dns control's. 2-) In total dns control panel i set A host to directly my VPS's ip address. 3-) Also i configured mx records to google apps. Everythings looks good but i am thinking that is this technuqie has any negative effects ? Thanks

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