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• Command-line connect to wired network for Ubuntu

  - by Tim

  I like to know how to use command-line to connect to a wired network in general for Ubuntu 8.10? In my case, I connect a cable to my laptop but it doesn't work with my WICD. So I like to try command-line method. Here is the ifconfig of my network adapters: $ ifconfig eth0 Link encap:Ethernet HWaddr 00:c0:9f:8d:23:74 UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Interrupt:19 Base address:0x1800 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:4457 errors:0 dropped:0 overruns:0 frame:0 TX packets:4457 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:493002 (493.0 KB) TX bytes:493002 (493.0 KB) wlan0 Link encap:Ethernet HWaddr 00:0e:9b:ab:56:19 UP BROADCAST NOTRAILERS PROMISC ALLMULTI MTU:576 Metric:1 RX packets:1508929 errors:0 dropped:0 overruns:0 frame:0 TX packets:768144 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:806027375 (806.0 MB) TX bytes:78834873 (78.8 MB) wlan0:avahi Link encap:Ethernet HWaddr 00:0e:9b:ab:56:19 inet addr:169.254.5.92 Bcast:169.254.255.255 Mask:255.255.0.0 UP BROADCAST NOTRAILERS PROMISC ALLMULTI MTU:576 Metric:1 wmaster0 Link encap:UNSPEC HWaddr 00-0E-9B-AB-56-19-00-00-00-00-00-00-00-00-00-00 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 B) TX bytes:0 (0.0 B) Thanks and regards! UPDATE: Tried what oyvindio suggested. Here is the failing message: $ sudo dhclient3 eth0 There is already a pid file /var/run/dhclient.pid with pid 18279 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ mon0: unknown hardware address type 803 wmaster0: unknown hardware address type 801 mon0: unknown hardware address type 803 wmaster0: unknown hardware address type 801 Listening on LPF/eth0/00:c0:9f:8d:23:74 Sending on LPF/eth0/00:c0:9f:8d:23:74 Sending on Socket/fallback DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 10 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 15 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 11 DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 8 No DHCPOFFERS received. No working leases in persistent database - sleeping.

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• Can USB Hubs affect peripheral performance?

  - by Daniel Rasmussen

  Like many laptops, mine has 2 USB 2.0 ports. I'm looking to purchase a USB hub for my peripheral devices. I'm also planning on purchasing a laptop cooler with two USB powered fans, which connects to a USB port but can extend the plug, so it doesn't use one up. (Sorry for the poor description; see the link for a picture.) My questions are these: Can one plug 'too many' peripherals into a USB port? Can I plug my fans into a port, then the hub into the fans, then my keyboard and mouse, mic, and webcam into the extender..? Is it possible to draw too much power from a port? Secondly, will a USB hub affect the performance of any of my devices? I'm mostly worried about my mouse and keyboard. I like wired mice because I've noticed some lag in my Bluetooth mouse.

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• Using the Remote Desktops MMC snap-in how do you connect to nonstandard ports?

  - by NitroxDM

  I have some severs I manage VIA Remote Desktop. They do not listen on port 3389. I can connect with out issue doing IP:PORT. I now manage so many I'm trying to use the Remote Desktop snap-in for the management console. But it will not let you enter a colon in the host name. Is there another way to specify the port? Here is link to the snap-in.

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• Hyper-V management remotely

  - by Péter

  I'll tell you in advance that I'm newbie in the topic. I have a Win8 (Home) machine with Hyper-V installed behind a router. The router has a public IP and a domain attached. I have another Win8 (Work) machine also installed Hyper-V. I want to access to my home Hyper-V via Hyper-V Manager so I can manage my virtual machines from work. I found this article but I don't know if it's applicable to me. I thought that a simple port forwarding should work and I only need to do is grant the Work HV manager my domain and the port I choose and if it's pop a login form I only need to fill the user data of my Home computer? How can I solve this? My thoughts revolve around: - Port forwarding - set domain+port and set my home user - Set up a VPN and use the local ip address of my home computer (it looks like a little cumbersome and my router only support PPTP) I'm open to any other solution too. Thanks, Péter

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• Recommendations for a JetDirect print server for USB 2.0 printers?

  - by eleven81

  I have been using some older HP JetDirect 300x print servers for a variety of parallel printers over the years. These things work great for every printer I have tried them with, including HP's, Dell's, and even a Mountbatten braille embosser! These have been a boon for printers whose internal network cards fail, but whose parallel ports continue working. I don't have to throw away the $500 printer that is one year and a week old, and can keep using it for many, many years. Now that very few printers are coming with parallel ports, but are coming solely with USB connections and network cards. When the network card fails but the printer is still usable, I want to continue using it on the network with a JetDirect card. In summary: Does anyone have any recommendations for JetDirect cards that will work as well with USB 2.0 printers of unspecified manufacturer that my old JetDirect 300x cards do?

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• Daemon process exiting when shell closes

  - by Pace

  I have a script which starts a daemon process and then sleeps for 20 seconds. If I run the script on SLES11 SP1 or RHEL6 then after the script exits the process is still running. If I run the script on SLES11 SP3 or RHEL6.3 then after the script exits the process is no longer running. The process continues to run for the entire 20 second sleep and is killed when the process exits. The script is run via expect so the script's entire shell exits with the process. Obviously if this wasn't a daemon it was starting I wouldn't be surprised. Also, I suspect the problem isn't the OS version as much as it is the difference in the way we've setup the newer servers (no idea what those differences are though, the older servers were set up years ago). During the 20 seconds the process runs if I do a ps I get the following: root 4699 1 0 15:14 pts/2 00:00:00 sudo -u openmq /opt/PacketPortal/openmq/default/bin/imqbrokerd -bgnd -autorestart -silent -port 7676 -Dimq.service.activelist=admin,ssljms -D openmq 4701 4699 0 15:14 pts/2 00:00:00 /bin/sh /opt/PacketPortal/openmq/default/bin/imqbrokerd -bgnd -autorestart -silent -port 7676 -Dimq.service.activelist=admin,ssljms -Dimq.ssl The fact that the parent process of 4699 is 1 seems to suggest to me that the process has been correctly daemonized. However, after the expect script exits both 4699 and 4701 are killed. What could be causing this? UPDATE I've printed the same output on the servers that work. During the 20 second sleep I get: openmq 18652 1 0 15:44 pts/1 00:00:00 /bin/sh /opt/PacketPortal/openmq/default/bin/imqbrokerd -bgnd -autorestart -silent -port 7676 -Dimq.service.activelist=admin,ssljms -Dimq.ssljms.tls.port=7680 openmq 18686 18652 8 15:44 pts/1 00:00:02 /usr/java/latest/bin/java -cp /opt/PacketPortal/openmq/default/bin/../lib/imqbroker.jar:/opt/PacketPortal/openmq/default/bin/../lib/imqutil.jar:/opt/PacketPortal/ope After the 20 second sleep I get: openmq 18652 1 0 15:44 ? 00:00:00 /bin/sh /opt/PacketPortal/openmq/default/bin/imqbrokerd -bgnd -autorestart -silent -port 7676 -Dimq.service.activelist=admin,ssljms -Dimq.ssljms.tls.port=7680 openmq 18686 18652 5 15:44 ? 00:00:02 /usr/java/latest/bin/java -cp /opt/PacketPortal/openmq/default/bin/../lib/imqbroker.jar:/opt/PacketPortal/openmq/default/bin/../lib/imqutil.jar:/opt/PacketPortal/ope After the script exits it disconnects the controlling terminal. I wonder why it doesn't do that on the newer servers. UPDATE Here is the section of the script that actually launches OpenMQ. The -bgnd flag is what is supposed to daemonize it. sudo -u openmq $IMQ_HOME/bin/$EXECUTABLE -bgnd $BROKER_OPTIONS $ARGS > /dev/null 2>&1 &

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• Nginx > Varnish > Gunicorn Error Too many Redirections

  - by kollo

  I have the following config: Nginx Varnish Gunicorn Django I want to cache 2 versions of same site (mobile & web) with Varnish. Gunicorn : WEB: gunicorn_django --bind 127.0.0.1:8181 MOBILE: gunicorn_django --bind 127.0.0.1:8182 Nginx: WEB: server { listen 80; server_name www.mysite.com; location / { proxy_pass http://127.0.0.1:8282; # pass to Varnish proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } MOBILE: server { listen 80; server_name m.mysite.com; location / { proxy_pass http://127.0.0.1:8282; # pass to Varnish proxy_set_header X-Real-IP $remote_addr; proxy_set_header Host $host; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; } } Varnish: default.vcl backend mobile_mysite { .host = "127.0.0.1"; .port = "8182"; } backend mysite { .host = "127.0.0.1"; .port = "8181"; } sub vcl_recv { if (req.http.host ~ "(?i)^(m.)?mysite.com$") { set req.http.host = "m.mysite.com"; set req.backend = mobile_mysite; }elsif (req.http.host ~ "(?i)^(www.)?mysite.com$") { set req.http.host = "mysite.com"; set req.backend = mysite; } if (req.url ~ ".*/static") { /* do not cache static content */ return (pass); } } The problem: On Nginx if I setup Mobile version with Varnish (port 8282) and let WEB version with Gunicorn( port 8181), MOBILE is cached by varnish, both WEB & MOBILE works but WEB is not cached. If I set the proxy_pass of WEB version to Varnish (port 8282) and restart Nginx I got an error when accessing web version (www.mysite.com) "Too many redirections" . I Think my problem come from the Varnish config file, as the site works well if I setup Nginx proxy_pass to Gunicorn ports (MOBILE & WEB).

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• trouble running multiple domains on tomcat behind apache via mod_jk

  - by mkoryak

  I am having trouble setting up tomcat6 with 2 virtual hosts, behind apache2. if i have just one host defined in tomcat, and one jk worker, everything works fine. as soon as i define another jk worker and a corresponding tomcat host i get this error in jk.log: 9:3075328656] [info] ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to (69.164.218.75:8009) (errno=111) [Tue Feb 08 03:08:13 2011] [17159:3075328656] [error] ajp_send_request::jk_ajp_common.c (1507): (dogself) connecting to backend failed. Tomcat is probably not started or is listening on the wrong port (errno=111) [Tue Feb 08 03:08:13 2011] [17159:3075328656] [info] ajp_service::jk_ajp_common.c (2447): (dogself) sending request to tomcat failed (recoverable), because of error during request sending (attempt=2) [Tue Feb 08 03:08:13 2011] [17159:3075328656] [error] ajp_service::jk_ajp_common.c (2466): (dogself) connecting to tomcat failed. [Tue Feb 08 03:08:13 2011] [17159:3075328656] [info] jk_handler::mod_jk.c (2615): Service error=-3 for worker=dogself my tomcat server.xml looks like this: <Service name="Catalina"> <Connector port="8080" protocol="HTTP/1.1" connectionTimeout="20000" URIEncoding="UTF-8" redirectPort="8443" /> <Connector port="8009" protocol="AJP/1.3" redirectPort="8443" /> <Engine name="Catalina" defaultHost="dogself.com"> <Realm className="org.apache.catalina.realm.UserDatabaseRealm" resourceName="UserDatabase"/> <Host name="dogself.com" appBase="webapps-dogself" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> </Host> <Host name="nousophia.com" appBase="webapps-test" unpackWARs="true" autoDeploy="true" xmlValidation="false" xmlNamespaceAware="false"> </Host> </Engine> </Service> my workers.properties looks like this: # workers.properties - ajp13 # # List workers worker.list=dogself,nousophia # Define dogself worker.dogself.port=8009 worker.dogself.host=dogself.com worker.dogself.type=ajp13 worker.nousophia.port=8009 worker.nousophia.host=nousophia.com worker.nousophia.type=ajp13 tomcat is started/restarted i followed these directions for setting it up: http://stackoverflow.com/questions/1765399/linking-apache-to-tomcat-with-multiple-domains can someone confirm that it would work as above?

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• How to connect to memcached from another machine

  - by Oscar Del Ben

  I'm trying to use memcached from a different machine (which has access to my server), but I can't figure out how. on the memcached machine I can test the connection by running telnet 127.0.0.1 port And it works, but on the other machine it just keeps trying to connect telnet machine_address port Trying machine_address... I'm not sure if I should set up something else to get it working. I know the port is working and accessible because if I try to run other services on it, they works. Os is ubuntu

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• isa 2004 - banned site rule cause slow internet

  - by Holian

  Hi Gods, We have windows server 2003 with isa 2004. Our clients uses internet with proxy. We have two isa rule: order name action protocolls from/listener to condition 1. trafic ALLOW all outbound all networks all networks all users 2. FTP ALLOW FTP Server EXTERNAL/INTERNAL/Local host 10.1.1.1 So we have to "bann" a few webpage (like facebook, youtube...etc...), so we make a new rule 0. banned DENY HTTP internal denied pages all users In the denied pages we have the *.facebook.com domain set. After we enable this rule, the entire internet slows down. The banning rule works well, redirect to an internal site, but the other sites.... If i open a page..it normally takes 3-10 sec to load, but after this rule this time is: 2-4 minutes. In the monitor / logging menu we got a few FAILED CONNECTION ATTEMPT like: Log type: Web Proxy (Forward) Status: 304 Not Modified Rule: All local traffic Source: Internal ( 10.1.1.1:0 ) Destination: External ( 172.24.28.22:3128 ) Request: GET http://www.konyvelozona.hu/wp-content/uploads/nyugdijas-holgy-2.jpg Filter information: Req ID: 17270b72 Protocol: http User: anonymous Additional information Client agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 3.0.4506.2152; .NET CLR 3.5.3072... Object source: Verified Cache Processing time: 9047 Cache info: 0x18801002 MIME type: - In the event log we got a few log: Description: The Web Proxy filter failed to bind its socket to 10.1.1.1 port 80. This may have been caused by another service that is already using the same port or by a network adapter that is not functional. To resolve this issue, restart the Microsoft Firewall service. The error code specified in the data area of the event properties indicates the cause of the failure. The failure is due to error: 0x8007271d The Web Proxy filter failed to bind its socket to 127.0.0.1 port 80. This may have been caused by another service that is already using the same port or by a network adapter that is not functional. To resolve this issue, restart the Microsoft Firewall service. The error code specified in the data area of the event properties indicates the cause of the failure. The failure is due to error: 0x8007271d If i tpye: netstat -o -n -a | findstr 0.0:80 then i got, tcp 0.0.0.0:80 0.0.0.0:0 LISTEN 4 udp 0.0.0.0:8031 *.* 2780 udp 0.0.0.0:8082 *.* 2780 Some month ago we installed XMAP, but now we only use mysql. Apache service stopped. In the Xamp port check menu i see: Service POrt Status Apache (http) 80 Process: System Maybee this is the problem? I dont know what should i do now... Thank you folks.

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• Remotely viewing IP camera on Belkin N450 DB router

  - by Mike Miller

  I need to setup a wireless IP camera (Trendnet TV-IP501W) on my network so that it is remotely visible from anywhere. Right now I successfully connected it to my home network but nothing else. My router is a Belkin N450 DB. Any help would be much appreciated, including what this would be referred to as so I could more easily ask another forum. I believe it is something like "port forwarding" but I'm not sure. Ok, I believe I found this in the "virtual servers" section. It asks for enabling with a check box, description, inbound port, type, private IP, & private port. In that order I have checked enabling, "camera", 150, TCP, 81, and 81? I'm assuming inbound ports are the numbers I use for the home network - xxx.xxx.x.150 and the 81 was for private. I used my WAN IP and added :81 and .81 but didn't get it. What am I doing wrong? Ok, I believe I found this in the "virtual servers" section. It asks for enabling with a check box, description, inbound port, type, private IP, & private port. In that order I have checked enabling, "camera", 150, TCP, 81, and 81? I'm assuming inbound ports are the numbers I use for the home network - xxx.xxx.x.150 and the 81 was for private. I used my WAN IP and added :81 and .81 but didn't get it. What am I doing wrong?

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• Upgrading from php 5.3 to php 5.4 with Macport

  - by dr.stonyhills

  PHP5.4 has been available for sometime now and Macport recently caught up with the release of port php54 but the process of upgrading is not as clear as possible. Even worst for those who are new to maintaining multiple versions of PHP on the same machine. I am keen on trying out some of the new features in PHP5.4 like traits, new array form etc but falling back on to php5.3 for other compatibility stuff. So i sudo port install php5+ (all the variants, apache2 etc) Then i tell it what PHP port to use as default sudo port select --set php php54 Check what version of PHP is active in the terminal using php -v outputs php 5.4.3. But i seem to be having issues with choosing the right non cli version as in the version of the module run by apache etc is still php5.3.12. Do i have to change the reference to the libphp5 in apache httpd.conf? Any advice on the right workflow for switching between php version on macport greatly appreciated!

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• What ports tend to be unfiltered by boneheaded firewalls?

  - by Reid

  Hi all, I like to be able to ssh into my server (shocking, I know). The problem comes when I'm traveling, where I face a variety of firewalls in hotels and other institutions, having a variety of configurations, sometimes quite boneheaded. I'd like to set up an sshd listening on a port that has a high probability of getting through this mess. Any suggestions? The sshd currently listens on a nonstandard (but < 1024) port to avoid script kiddies knocking on the door. This port is frequently blocked, as is the other nonstandard port where my IMAP server lives. I have services running on ports 25 and 80 but anything else is fair game. I was thinking 443 perhaps. Much appreciated! Reid

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• Transparent proxying leaves sockets with SYN_RCVD in MacOS X 10.6 Snow Leopard (and maybe FreeBSD)

  - by apenwarr

  I'm trying to create a transparent proxy on my MacOS machine in order to port the sshuttle ssh-based transproxy VPN from Linux. I think I almost have it working, but sadly, almost is not 100%. Short version is this. In one window, start something that listens on port 12300: $ while :; do nc -l 12300; done Now enable proxying: # sysctl -w net.inet.ip.forwarding=1 # sysctl -w net.inet.ip.fw.enable=1 # ipfw add 1000 fwd 127.0.0.1,12300 log tcp from any to any And now test it out: $ telnet localhost 9999 # any port number will do # this works; type stuff and you'll see it in the nc window $ telnet google.com 80 # any host/port will do # this *doesn't* work! After the latter experiment, I see lines like this in netstat: $ netstat -tn | grep ^tcp4 tcp4 0 0 66.249.91.104.80 192.168.1.130.61072 SYN_RCVD tcp4 0 0 192.168.1.130.61072 66.249.91.104.80 SYN_SENT The second socket belongs to my telnet program; the first is more suspicious. SYN_RCVD implies that my SYN packet was correctly captured by the firewall and taken in by the kernel, but apparently the SYNACK was never sent back to telnet, because it's still in SYN_SENT. On the other hand, if I kill the nc server, I get this: $ telnet google.com 80 Trying 66.249.81.104... telnet: connect to address 66.249.81.104: Connection refused telnet: Unable to connect to remote host ...which is as expected: my proxy server isn't running, so ipfw redirects my connection to port 12300, which has nobody listening on it, ie. connection refused. My uname says this: $ uname -a Darwin mean.local 10.2.0 Darwin Kernel Version 10.2.0: Tue Nov 3 10:37:10 PST 2009; root:xnu-1486.2.11~1/RELEASE_I386 i386 Does anybody see any different results? (I'm especially interested in Snow Leopard vs Leopard results, as there seem to be some internet rumours that transproxy is broken in Snow Leopard version) Any advice for how to fix?

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• Switching to LDAP over SSL for Active Directory

  - by bkildow

  On our active directory server, I would like to enable LDAP over SSL as per this: http://support.microsoft.com/kb/321051. I am wondering, once this is set up, will LDAP still be listening on the standard port, 389 once this is implemented as well as the secure port? Or will the secure port completely replace the standard port as an option to connect to? Also, will there need to be any other configurations besides the steps in the article for doing this? In other words, will domain users still be able to authenticate like normal, or is there additional setup that would need to occur?

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• Can there be multiple monitors with these video cards and setup

  - by z_Zelman

  I have a Acer Aspire TimelineX 4830TG-6808 laptop running windows 7 Ultimate with one VGA port and one HDMI port. It has one Intel HD Graphics family card and one NVIDIA GeForce GT 540M. Right now I have one monitor running via the VGA port, and also the basic laptop monitor. When I look at the monitor setup, I see one unused video card available. Can I have another monitor via the HDMI port? If I cannot run three monitors, is there some way I could make a large "single" desktop that extends over two monitors? For the sake of celerity, maybe something like having a virtual machine window that extends over two monitors. Could this maybe come from third party software?

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• Glassfish basic configuration forgotten

  - by Toto

  I installed glassfish v3 some time ago and it's been a while since I last used it, so I forgot the port on which the server is listening and the port on which the admin console is listening. Moreover, i forgot the admin password! I'm pretty sure I've change them because I've tried the default values and didn't work. Is there any configuration file where I can look for them (at least the port numbers)?

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• Static file download from browser breaking in varnish but works fine in Apache

  - by Ron

  I would at first like to thank everyone at serverfault for this great website and I also come to this site while searching in google for various server related issues and setups. I also have an issue today and so I am posting here and hope that the seniors would help me out. I had setup a website on a dedicated server a few days ago and I used Varnish 3 as the frontend to Apache2 on a Debian Lenny server as the traffic was a bit high. There are several static file downloads of around 10-20 MB in size in the website. The website looked fine in the last few days after I setup. I was checking from a 5mbps + broadband connection and the file downloads were also completed in seconds and working fine. But today I realized that on a slow internet connection the file downloads were breaking off. When I tried to download the files from the website using a browser then it broke off after a minute or so. It kept on happening again and again and so it had nothing to do with the internet connection. The internet connection was around 512 kbps and so it was not dial up level speed too but decent speed where files should easily download though not that fast. Then I thought of trying out with the apache backend port and used the port number to check out if the problem occurs. But then on adding the apache port in the static file download url, the files got downloaded easily and did not break even once. I tried it several times to make sure that it was not a coincidence but every time I was using the apache port in the file download url then it was downloading fine while it was breaking each time with the normal link which was routed through Varnish I suppose. So, it seems Varnish has somehow resulted in the broken file downloads. Could anyone give any idea as to why it is happening and how to fix the problem. For more clarification, take this example: Apache backend set on port 8008, Varnish frontend set on port 80 Now when I download say http://mywebsite.com/directory/filename.extension Then the download breaks off after a minute or so. I cannot be sure it is due to the time or size though and I am just assuming. May be some other reason too. But when I download using: http://mywebsite.com:8008/directory/filename.extension Then the file download does not break at all and it gets download fine. So, it seems that varnish is somehow creating the file download breaking and not apache. Does anybody have any idea as to why it is happening and how can it be fixed. Any help would be highly appreciated. And my varnish default.vcl is backend apache { set backend.host = "127.0.0.1"; set backend.port = "8008"; } sub vcl_deliver { remove resp.http.X-Varnish; remove resp.http.Via; remove resp.http.Age; remove resp.http.Server; remove resp.http.X-Powered-By; }

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• How can I redirect/forward all the UDP/TCP traffic on one interface to another interface in OpenWrt

  - by Sina Sou

  I am new to networking and I have a measurement device (D) that periodically sends all its readings over few UDP multicast sockets (with different multicast IP addresses and different port numbers). That device even listens to a TCP socket simultaneously to modify its configuration on port 7234. Since the device has just a Ethernet interface for communication and I want to make it work wireless, I decided to use a very small wireless open-wrt based router that attaches to the device (D) and redirect/forward all the network traffic(Both UDP/TCP) to the router wireless interface. In order to simplify the problem assume that the Device (D) establishes following sockets (at the same time) UM_SOCK1: UDP mcast socket on 239.1.2.3 port# 50620 UM_SOCK2: UDP mcast socket on 239.1.2.4 port# 50640 TC_SOCK3: TCP DHCP/STATIC ip address 192.168.1.200 port 7234 And (D) is connected to Open-Wrt router (R) via interface en01 (Ethernet) the router has it own wireless interface on (wlan0) I want all the traffic from interface pass through wlan01 and vice versa (bi-directional) en01 <---- wlan01 What would be the minimum iptables or ... commands that I need to make this possible? Even I am wondering if traffic directing can be made easier like if the direction is not going to be based on IP addresses(not desired if the device is connected via DHCP) I would rather redirection to be Interface(en0) based or on MAC address (The best solution since my device has unique MAC address)? Thanks

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• phpbb behind a reverse proxy

  - by asciitaxi

  Hi, i've got a django app running on apache behind an nginx reverse proxy. Nginx takes requests on port 80 and forwards them to apache on 127.0.0.1:81. This works fine. Now I want to run phpbb on apache under /forums. My problem is that when phpbb does a redirect, it seems to redirect to the internal apache port, rather than port 80. So, for instance when I first go to http://my-dev-server/forums to configure php bb, it immediately redirects to http://127.0.0.1:81/forums/install/index.php. Is there something I need to do in nginx/apache/phpbb config to get it to redirect to the external port? Thanks very much!

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• How do I examine my Windows firewall outbound rules?

  - by David

  I need a program to listen to port 9000 on localhost with my Windows firewall. I've created an outgoing and an incoming rule for my program but I can only see my incomming rule in the Windows firewall general menu? I've also noticed that I've many more outgoing rules in my outgoing rule menu but I can only see 4 outgoing rules in my general firewall menu but I see many many more incomming rules? The program doesn't listen to port 9000 or it doesn't working. I've also tried netstat -a -p to no avail. I didn't see 0.0.0.0:9000 in the output? How can I check if my program listen to port 9000 or connect to port 9000 when it's open?

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• Connecting to SVN server from a computer outside of my LAN

  - by Tom Auger

  I've got a Fedora server running Subversion and svnserve on port 3690. My repo is at /var/svn/project_name. I have my router forwarding port 3690 to the local server (as well as port 80, 21, 22 and a few others). When I connect locally to svn://192.168.0.2/project_name it works great. When I connect from an external server to svn://my.static.ip/project_name I get a time out connecting to the host. However, if I http://my.static.ip there is no problem, so port forwarding is working (at least for port 80). I don't want to run WebDAV or svn via HTTP/s. I'd like it to work using svnserve, as documented in the svn book. What have I misconfigured? EDIT Here is the last part of my iptables dump. I'm not an expert, but it looks OK to me: ACCEPT tcp -- anywhere anywhere state NEW tcp dpt:svn ACCEPT udp -- anywhere anywhere state NEW udp dpt:svn ACCEPT tcp -- anywhere anywhere state NEW tcp dpts:6680:6699 ACCEPT udp -- anywhere anywhere state NEW udp dpts:6680:6699 REJECT all -- anywhere anywhere reject-with icmp-host-prohibited EDIT 2 Results from sudo netstat -tulpn tcp 0 0 0.0.0.0:3690 0.0.0.0:* LISTEN 1455/svnserve

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• Connect to WEP Wireless Network by command line on Ubuntu

  - by Tim

  Hi, I am a newbie to both network and Linux. I am now trying to connect to a WEP wireless network by command line on my Ubuntu 8.10, because the Network Manager does not support 64 bit WEP. (1) I firstly bring down the Network Manager and then try to connect to a wireless network, whose essid is candy and password is 5673212741. But it fails as shown in the following. I wonder why and how to do it correctly? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwconfig wlan0 essid candy opendo iwconfig wlan0 key 18018ce78e open $ sudo iwconfig wlan0 key 5673212741 open $ sudo dhclient wlan0 There is already a pid file /var/run/dhclient.pid with pid 9971 killed old client process, removed PID file Internet Systems Consortium DHCP Client V3.1.1 Copyright 2004-2008 Internet Systems Consortium. All rights reserved. For info, please visit http://www.isc.org/sw/dhcp/ wmaster0: unknown hardware address type 801 wmaster0: unknown hardware address type 801 Listening on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on LPF/wlan0/00:0e:9b:cd:4e:18 Sending on Socket/fallback DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 7 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 12 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 20 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 13 DHCPDISCOVER on wlan0 to 255.255.255.255 port 67 interval 9 No DHCPOFFERS received. No working leases in persistent database - sleeping. $ ping www.bbc.co.uk ping: unknown host www.bbc.co.uk (2) A less important question: why the scan for wireless networ does not work after I bring down the Network Manager? $ sudo /etc/init.d/NetworkManager stop * Stopping network connection manager NetworkManager [ OK ] $ sudo iwlist wlan0 scan wlan0 Interface doesn't support scanning : Network is down Thanks and regards!

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• What could be wrong with my VLAN?

  - by Matt

  I've got a VLAN 10 setup as a management VLAN. The management VLAN comes off port 48 and links to another set of switches that do not support VLAN's so it was I believe set up as an untagged access port. In the past this was a different brand of switch and this worked fine. However, since changing to the HP V1910-48G series I can't seem to get this working. I must point out that as far as I'm aware it is wired up properly (I can't check this physically as I'm working remote and have asked the tech who's got access to double check for me). Now I don't have a huge amount of experience with VLAN environments but AFAIK this is right. I've set the port 48 (linked to the management switches) as an untagged port with PVID 10 and access link type. Is this all I'd need to do from a configuration perspective to ensure all devices connected to port 48 would end up being on VLAN 10 and not needing to tag their frames. i.e. the tag would be added by the switch before being forwarded.

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• Two domains hosted on the same server with different root folder shows up the same homepage

  - by emaillenin

  I have hosted two domains from GoDaddy at Linode VPS. They are mobiletoast.com and lesseltechnologies.com Thought the latter site has a separate index folder, whenever I navigate to it, I get the homepage of mobiletoast.com The strange thing is, I see the expected page (It works), when I open the site from my mobile phone. But when I open the site from my PC (any browser, without any cache, hard refresh), I get the homepage of mobiletoast.com The Linode support team says, they see the correct "It works" page. But I am not able to see that page. This is the output of the command apache2ctl -S root@li339-83:~# apache2ctl -S VirtualHost configuration: wildcard NameVirtualHosts and _default_ servers: *:80 is a NameVirtualHost default server mobiletoast.com (/etc/apache2/sites-enabled/000-default:1) port 80 namevhost mobiletoast.com (/etc/apache2/sites-enabled/000-default:1) port 80 namevhost blog.mobiletoast.com (/etc/apache2/sites-enabled/blog.mobiletoast.com:1) port 80 namevhost lesseltechnologies.com (/etc/apache2/sites-enabled/lesseltechnologies.com:1) port 80 namevhost mobiletoast.com (/etc/apache2/sites-enabled/mobiletoast.com:1) Syntax OK

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