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• How do I enable Ubuntu Gnome system tools

  - by RussellW

  I am running Ubuntu 10 with Gnome 2.30.2. This is a VMWare workstation image provided by another company that I do not have support in this regard. I am trying to access the graphical tools for configuring the network, users, and services but the System-Administration menu does not have these options listed. The main issue I am trying to solve is to correct the problems with the gnome menu options and network settings I have the gnome-system-tools package installed, and I am unable to run command-line versions of the tools, such as nm-applet (I get no GUI if I run that command, the process is running in the background). I realize that I can perform many tasks command-line, but I would like to use the GUI for administrative functions as I am not overly proficient for all command for restarting services and setting a static IP with a specific gateway. Further, I can run gnome-nettool, but I cannot change the IP, I can only see my network card. nm-connection-editor does not show any network cards that I can configure to change the IP. Currently, I am getting a DHCP through my NAT in VMWare, I want to set it to a specific IP address though. Preferences Menu (note some missing options) ![Preferences Menu][1] Admin Menu (note some missing options) ![Admin Menu][2] Network Tools (I can view but not change IP address) ![Network Tools][3] Network Settings (Unable to change IP address) ![Network Settings][4] Network Connections (no connections listed, not even my existing ethernet NAT connection through VMWare) ![Network Connections][5] See images here that I have referenced: 1- http://i.imgur.com/kl8pP.png 2- http://i.imgur.com/K3Cjz.png 3- Iq7Xb.png 4- 7wheV.png 5- J2ad8.png

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• Multiple Routers, Failover, DHCP and multiple gateways. NOT WAN-failover

  - by u_b

  I've had a look around google and this forum but could not find an answer to my question. So probably one of you can help me a little. My intended setup is: Router R1: wan connection to isp. connected backup server. provides some wireless SSID. other connected devices like printer, laptop, etc. both wired and wireless. Router R2: no wan connection to isp but connected to R2. connects mp3-streamer and music server. also serves as a wireless access point with same SSID. other than described connections only wireless connections. I would like to be able to control music even if R1 is off, e.g. with no internet connection. On the other hand I would like to access internet also in the case that R2 is off, i.e. no music access. Last but not least I would like to stream internet radio, i.e., R1 and R2 are on, and music is streamed from internet to R1 to R2 to streamer. I would like to realize all this using DHCP (also using static assignments) so i do not have to configure statically on android, laptop, etc. So my questions are: Can I make DHCP provide a list of two default gateways R1,R2? In order to make clients fallback to other gateway if currently assigned gateway is turned off? Thanks in advance, u_b

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• Nginx + PHPBB3 reverse proxy images problem

  - by siberiano

  Hello all I have a problem with my Nginx Frontend + Apache2 backend + PHPBB3 software. It doesn't load the CSS and the images neither. I get constant errors like these: 2010/04/14 16:57:25 [error] 13365#0: *69 open() "/var/www/foo/styles/styles/coffee_time/theme/large.css" failed (2: No such file or directory), client: 83.44.175.237, server: www.foo.com, request: "GET /styles/coffee_time/theme/large.css HTTP/1.1", host: "www.foo.com", referrer: "http://www.foo.com/viewforum.php?f=43" This is my config of the site: server { listen 80; server_name www.foo.com; access_log /var/log/nginx/foo.access.log; # serve static files directly location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico)$ { access_log off; expires 30d; root /var/www/trasteando/; } location / { root /var/www/foo/; index /var/www/foo/index.php; } # proxy the PHP scripts to predefined upstream .apache. # location ~ .php$ { proxy_pass http://apache; } location /styles/ { root /var/www/foo/styles/; }

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• Home Network Stopped Working

  - by James

  I have a home network where a machine running Windows 7 Ultimate N acts as a central hub for other devices to access media. This has been running for around 2 years now and there has been no recent configuration changes. The machine has a static IP address (192.168.0.3), which also has not been changed. A few laptops, Sonos music system and mobiles are using the machine for music/video mostly. Additionally, post 3389 was also open for RDP. I used a no-ip agent to map a hostname so I could RDP to the machine from the internet. As of yesterday when I try to ping the machine, I get PING:Transmit Failed, General Error I noticed however, the IP it is pinging is 0.0.2.233. All shares etc are no longer functioning including RDP. On the machine itself, an IP config shows like nothing has changed. It still shows the expected IP. If I ping itself from its hostname, I get the same error as above. machine has been rebooted, the router has been also. Any ideas where to even start on this?

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• Setting a subdomain to access home machine with windows remote desktop

  - by ianhales

  I'm trying to remotely connect to home machine through Windows Remote Desktop (amongst other things, but this is currently my primary focus). I can do this fine using my home WAN's static IP (thank god for cable!) with port-forwarding, but I would like to access it from a subdomain of my web-site (e.g. home.mydomain.co.uk). In the cPanel for my hosting account, I've gone into DNS zones and altered the A-record to point to my WAN's IP, which I thought should do the job, but I still cannot connect. When I ping the subdomain, I get my web-host's IP, which I guess is to be expected as I believe the DNS of the host domain is used first, then my server handles the redirection of traffic to the IP in the A-record. Is this the correct idea? Do A-record changes suffer from the same propagation delays as DNS record changes, as I suppose that could explain it? (by the way, this thread confirms my thoughts that setting the A-record should be enough: Hostmonster Subdomain redirected to home server IP: How to ssh into home server using subdomain)

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• Routing WIFI and LAN for specific traffic

  - by jakebird451

  I have two network devices aboard my macbook pro: WIFI (en1): Used for general traffic. Connects to an ip of 192.168.19.* via DHCP LAN (en0): Used for specific traffic. Connects to an ip of 192.168.2.10 as a static IP. Does not connect to a router, only a switch for direct routing connection. I have 4 IP addresses I need to access on the LAN: 192.168.2.1 192.168.2.21 192.168.2.20 192.168.2.30 The rest of the traffic needs to go to WIFI. I have tried setting up a routing table for the specific ip addresses, but I only managed to mess up my network. I do not venture out into the world of networking too often, but this was the latest command I have been trying: sudo route add -host 192.168.2.30 -interface en0 This command killed my ability to use ping. It told me that ping could not allocate memory (is that even possible)? It also killed my wifi access. Logging out and back in fixed the issue. I really do not mind to make this solution permanent, so I am fine with a temporary routing.

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• Trying to Set up SMTP Server on WIndows Server 2012

  - by datc

  I'm working on a website, and I need to test the functionality of sending email messages from ASP.NET, something like this: Dim msg As New MailMessage("email1", "email2") msg.Subject = "Subject"<br> msg.IsBodyHtml = True<br> msg.Body = "Click <a href='site'>here</a>." Dim client As SmtpClient = New SmtpClient() client.Host = "My-Server"<br> client.Port = 25<br> client.DeliveryMethod = SmtpDeliveryMethod.Network<br> client.Send(msg) This is running from a Windows 8 workstation. I've installed SMTP server on my Windows Server 2012 machine. The mail shows up in the mailroot/Queue folder and sits there, eventually getting deposited into Badmail. Now I have AT&T U-verse at home, and a few devices connected to the gateway, including let's call it "My-Server." When I run SmtpDiag from say, datc@... to [email protected] I get SOA serial number match passed, Local DNS (99-135-60-233.lightspeed.bcvloh.sbcglobal.net) & Remote DNS (hotmail.com) tests *not* passed, and ultimately, Connecting to the server failed. Error: 10060. Failed to submit mail to mx2.hotmail.com error. When I set My-Server's IP to static and equal to the external IP, 99.135.60.233, and again run SmtpDiag, I get SOA, Local DNS, and Remote DNS tests passed, but the same 10060 error. Same for yahoo.com, gmail.com, and so forth. Is it my ISP's job to fix this? Some PTR record missing somewhere? Is it at all possible to have a home-based SMTP server? All I want is to test my email code. Perhaps, my IP address is just not "trusted" somehow. Thanks.

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• Proxmox: VMs and different public IPs

  - by Raj

  I have a server which has two NICs and both are directly connected to internet. I have five different public IP addresses available for the VMs. The host machine (Proxmox) doesn't need to use any (it'll use a private IP and that's all) but will have internet connection. I've gone through the Proxmox documentation and I'm not able to understand the big picture to set up the right network configuration for my needs. In short, what I have is: One server (Proxmox, host machine) On that server, 5 VMs are created 5 public IP addresses available (one for each VM), let's say: 80.123.21.1, 80.123.21.2, 80.123.21.3, 80.123.21.4, 80.123.21.5 What I have now for the host is the following: auto lo iface lo inet loopback auto eth0 iface eth0 inet manual auto eth1 iface eth1 inet manual auto vmbr0 iface vmbr0 inet static address 192.168.1.101 netmask 255.255.255.0 bridge_ports eth0 bridge_stp off bridge_fd 0 auto vmbr1 iface vmbr1 inet manual It can be reached from the internal network, so that's OK. It has internet connection, which is also OK. vmbr1 is going to be used by the VMs. Each VM will have its own IP on his network interfaces configuration file. For some reason, VMs will not have internet and they won't be able to have public IP address. If I use NAT, it will work correctly, but they will not use the public allocated IP addresses for them. Am I missing something?

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• Cisco IOS ACL: Don't permit incoming connections just because they are from port 80

  - by cjavapro

  I am going much based on my memory and I may not be correct on all of this. On a Cisco 851 (IOS) that uses a BVI or a bridge-route (the servers on the inside are configured with static and public IP addresses). I would apply two access lists (both end with deny ip any any log) on FastEthernet4 (the WAN port). There would be one for FA4 in and another for FA4 out. FA4 out would have a line like access-list 110 permit 98.76.54.0 0.0.0.255 gt 1023 any eq http I think this means from 98.76.54.* with a from port of at least 1024 can connect to any other machine with a destination port 80. So, then I have to allow the response to the HTTP connection. FA4 in would have a line like access-list 120 permit any eq http 98.76.54.0 0.0.0.255 gt 1023 Now the problem with that is that anybody on the outside can set their from port to port 80 and then connect to any inside port that is at least 1024. How do we prevent this and require the incoming data to be a response to the outgoing data.

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• Nginx: Loopback connection via PHP's getimage size crashes server (Magento's CMS)

  - by Alex

  We were able to trace down a problem that is crashing our NGINX server running Magento until the following point: Background info: Magento Backend has a CMS function with a WYSIWYG editor. This editor loads some pictures via a controller in magento (cms/directive). When we set the NGINX error_log level to info, we get the following lines (line break inserted for better readability): 2012/10/22 18:05:40 [info] 14105#0: *1 client closed prematurely connection, so upstream connection is closed too while sending request to upstream, client: XXXXXXXXX, server: test.local, request: "GET index.php/admin/cms_wysiwyg/directive/___directive/BASEENCODEDIMAGEURL,,/ HTTP/1.1", upstream: "fastcgi://127.0.0.1:9024", host: "test.local" When checking the code in the debugger, the following call does never return (in ´Varien_Image_Adapter_Abstract::getMimeType()` # $this->_fileName is http://test.local/skin/adminhtml/base/default/images/demo-image-not-existing.gif` # $_SERVER['REQUEST_URI'] = http://test.local/admin/cms_wysiwyg/directive/___directive/BASEENCODEDIMAGEURL list($this->_imageSrcWidth, $this->_imageSrcHeight, $this->_fileType, ) = getimagesize($this->_fileName); The filename requests is an URL to the same server which is requesting the script a link to a static .gif that is not existing. Sample URL: http://test.local/skin/adminhtml/base/default/images/demo-image-not-existing.gif When the above line executed, any subsequent request to the NGNIX server does not respond any more. After waiting for around 10 minutes, the NGINX server starts answering requests again. I tried to reproduce the error with a simple test script that only calls getimagesize() with the given URL - but this not crash. It simple leads to an exception saying that the URL could not be loaded (which is fine as the URL is wrong)

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• How to deal with ssh's "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!"?

  - by Vi.

  I often need to login to multiple remote stations that are just placed to the same static IPs for me. SSH complains about changed keys in this case: $ ssh [email protected] @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ ... Offending RSA key in /home/vi/.ssh/known_hosts:70 ... I usually just run vim /home/vi/.ssh/known_hosts +70, dd wq and re-run the SSH command. How to do it simpler? Requirements: The warning should be displayed, and not like this: The authenticity of host '172.1.2.3 (172.1.2.3)' can't be established. It is easy to accept the key change. I expect something like this: $ ssh [email protected] @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ @ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @ @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@ ... The fingerprint for the RSA key sent by the remote host is 82:cd:be:7a:ae:1b:91:2c:23:c1:74:4d:8a:38:10:32. Change the host key in /home/vi/.ssh/known_hosts (yes/no)? yes Warning: Changed host key for '172.1.2.3' (RSA) in the list of known hosts. [email protected]'s password: Simple and differs from usual "The authenticity of host can't be established." message.

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• Locked out of our Comcast Business Gateway for seemingly no reason

  - by Tyler

  A little backstory... Last fall we migrated our ISP from AT&T to Comcast at one of our offices. At that time, we received a new modem/router from Comcast and we configured everything to our liking. We've never really had very many issues with the router aside from having to restart it every once in a while. Here's the problem... About three months ago I changed the password on the router from the default. After that, I logged into the router several times to make changes with no issue. During May I logged into the router to add two new static routes, no problems. A week ago, I tried to log into the router and could not. I tried the non-default password that I changed it to, the default, anything and everything I could think of and no luck. I restarted the router on Monday thinking it may just be locked up, but after the restart it would still not let me log in. This router is at our other office about 2 hours from here and I want to avoid having to drive down there and reset to factory defaults, reconfigure, etc. Any ideas?

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• Nginx Config - I can't access WordPress admin area

  - by WebDevDude

  I am a complete noob when it comes to Nginx, but I'm trying to make the switch over for my WordPress site. Everything works, even the permalink, but I can't access my WordPress admin directory (I get a 403 error). I have my WordPress install in a subfolder, so that complicates things a bit for me. Here is my Nginx config file: server { server_name mydomain.com; access_log /srv/www/mydomain.com/logs/access.log; error_log /srv/www/mydomain.com/logs/error.log; root /srv/www/mydomain.com/public_html; location / { index index.php; # This is cool because no php is touched for static content. # include the "?$args" part so non-default permalinks doesn't break when using query string try_files $uri $uri/ /index.php?$args; } location /myWordpressDir { try_files $uri $uri/ /myWordpressDir/index.php?$args; } location ~ \.php$ { include /etc/nginx/fastcgi_params; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME /srv/www/mydomain.com/public_html$fastcgi_script_name; fastcgi_split_path_info ^(/myWordpressDir)(/.*)$; } location ~* ^.+\.(ogg|ogv|svg|svgz|eot|otf|woff|mp4|ttf|rss|atom|jpg|jpeg|gif|png|ico|zip|tgz|gz|rar|bz2|doc|xls|exe|ppt|tar|mid|midi|wav|bmp|rtf)$ { access_log off; log_not_found off; expires max; } }

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• Would a PHP application benefit from being served from a RAM drive?

  - by Tom Marthenal

  I am in charge of hosting a PHP application that is large and slow, but easy to scale. The application is entirely static, with writable disk storage needed. We've profiled the application, and the main bottleneck appears to come from loading the application and not the work the application does. The application is not CPU-intensive, although it does use a fair amount of memory (think Magento). Currently we distribute it by having a series of servers with the same PHP files on their hard drive and a load balancer in front of them. Easy but expensive. I've been reading about RAM disks and the IO benefits they offer, and was wondering if they would be well-suited to PHP applications. Since PHP applications are loaded from disk for every request and often involve lots of different files (as opposed to being kept in memory like with a Java application), I would figure that disk performance can be a severe bottleneck. Would placing the PHP files on a RAM disk and using the mount point as Apache's document root offer performance benefits? A startup script could create the RAM drive and then copy the files (which are plain-text and small) from a permanent location to the temporary RAM drive. Does this make sense, or should I just trust the linux kernel to cache the appropriate files in memory by itself?

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• Help with routing table

  - by user68752

  I have tried to find the answer to my question but not really found a clean and easy solution. I have a box (Ubuntu headless 10.04.1 server, with one Ethernet port) on LAN behind a router (running m0n0wall), that I have successfully installed a PPTP device (ppp0) on, this is working flawlessly (following this link) The thing is I want this box to route all it's internet traffic through the VPN tunnel (ppp0 device) but also being able to access the local LAN on 192.168.1.* subnet. I've succeeded a bit with this, but my problem right now is that I have port forwards (e.g. SSH) done in the m0n0wall pointing to this specific box which forces me to do "add routes" to all boxes that want to access this machine through this specific port. For instance a machine with ip xyz.xyz.xyz.xyz needs to have a static route setup in the routing table on the box to be able to access the box. This is the result of route -n xxx.xxx.137.2 192.168.1.1 255.255.255.255 UGH 0 0 0 eth0 xxx.xxx.137.2 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0 192.168.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 yyy.yyy.0.0 192.168.1.1 255.255.0.0 UG 0 0 0 eth0 0.0.0.0 0.0.0.0 0.0.0.0 U 0 0 0 ppp0 Where xxx is the IPs provided from VPN server. yyy.yyy.0.0 is a net that i want to have access to the box, without this I can't access the box from outside the LAN (via port-forwards done in router software, m0n0wall) is there away round this ugly solution?

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• Issue with SSH on Ubuntu - Local connection ok, remote connection - Is it me or my ISP?

  - by Benjamin

  I have an issue with a server running Ubuntu 12.04, I am trying to set up a remote connection so I can access the server at my work from out of town. I have installed the SSH server and all that stuff, and I have reassigned the default port from 22 to 3399. A local connection from any OS can connect on the 192.168... address, but in no way can I get a connection on the actual IP address. I believe my configuration is correct, and I will attach it. If I have done something wrong in the config, please tell me and I will make a change to it. I honestly think that the Router that my ISP provided is horrible, and although the port for ssh is forwarded, it might be stopping any traffic coming inbound. Is there anything I can try to verify this? /var/log/auth does not show any error when I connect VIA our static IP. I have included all values not commented out below: (sshd_config) Port 3399 ListenAddress 0.0.0.0 Protocol 2 HostKey /etc/ssh/ssh_host_rsa_key HostKey /etc/ssh/ssh_host_dsa_key HostKey /etc/ssh/ssh_host_ecdsa_key UsePrivilegeSeparation yes KeyRegenerationInterval 3600 ServerKeyBits 768 SyslogFacility AUTH LogLevel INFO LoginGraceTime 120 PermitRootLogin yes StrictModes yes UseDNS no RSAAuthentication yes IgnoreRhosts yes RhostsRSAAuthentication no HostbasedAuthentication no PermitEmptyPasswords no ChallengeResponseAuthentication no PasswordAuthentication yes GSSAPIAuthentication no X11Forwarding yes X11DisplayOffset 10 PrintMotd no PrintLastLog yes TCPKeepAlive yes AcceptEnv LANG LC_* Subsystem sftp /usr/lib/openssh/sftp-server UsePAM yes Am I doing this wrong? port forwarding image

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• Router that allows custom Dynamic DNS server [closed]

  - by Thuy

  I've made my own DDNS service and it works fine using an application running on clients to update the IP. But if for some reason I don't have the choice of using my software and instead I need to use a router to update the IP, it becomes troublesome. For example, I needed to setup IPsec from a customer to me and the customers router/firewall (netgear srx5308) has a dynamic IP which is given from the ISP which can't offer static IPs. So it needs to use dynamic dns for it to work. In this case there really isn't a client to run the software on since it's a router/firewall. Unfortunately it seems that most routers are rather unfriendly towards custom DDNS solutions and most offer only dyndns.com or similar templates. Which was the case with this router too. Leaving me with no way to use my own dynamic dns server IP. I have the option of switching out the customers router and I've been looking around for alternatives and other routers/solutions and I was wondering if anyone on this great site might have been in a similar situation or might just know about some router/firewall that is more friendly towards custom ddns solutions that I might be able to use. Thanks in advance for any help or guidance!

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• Error at the end of APC install

  - by cinqoTimo

  I need to get APC running for a Drupal install of mine. I found a fairly concise guide at http://blog.4rev.net/2009-09/installing-apc-accelerator-into-php5-fedora-core-11/ for installing on FC11, only, I am using FC12. I figured I would give it a shot. I was able to run the following commands successfully - and yum installed fc12 versions of everything in the FC11 guide. yum install php-pear yum install php-devel httpd-devel yum groupinstall ‘Development Tools’ yum groupinstall ‘Development Libraries’ Then, I tried pecl install apc. Everything looked good until to got to the end, where it outputted the following error. /var/tmp/APC/php_apc.c: In function ‘zif_apc_compile_file’: /var/tmp/APC/php_apc.c:881: warning: unused variable ‘eg_class_table’ /var/tmp/APC/php_apc.c:881: warning: unused variable ‘eg_function_table’ /var/tmp/APC/php_apc.c: At top level: /var/tmp/APC/php_apc.c:959: error: duplicate ‘static’ make: *** [php_apc.lo] Error 1 ERROR: `make' failed Some people have had success with installing apc-beta, but that didn't work for me.. Any suggestions? Is there something I missed that is critical in the FC12 version?

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• How do I setup an Alias on Apache with XAMPP on Linux ? (Permission problem)

  - by knarf

  XAMPP works fine but I want to have http://localhost/f to point to /home/knarf/prog/php/fwyxz. I've chmod -R 777 /home/knarf/prog/php/fwyxz I've added Alias /f /home/knarf/prog/php/fwyxz at the end of the httpd.conf And when I try to access it, I get a 403. From the apache error_log: [error] [client 127.0.0.1] (13)Permission denied: access to /f denied. I've already tried several solutions (userdir and symlinks) but they both failed with the same error. I've also tried to add this after the Alias: <Directory "/home/knarf/prog/php/fwyxz"> Order allow,deny Allow from all </Directory> But again, permission denied. Now if I change the User/Group under which apache runs from nobody to knarf, it seems to work (static files are ok) but PHP can't use/initialize sessions : [error] [client 127.0.0.1] PHP Warning: session_start() [function.session-start]: open(/tmp/sess_r5nrmu4ugqguqqe83rs53lq6k0, O_RDWR) failed: Permission denied (13) in /home/knarf/prog/php/fwyxz/index.php on line 3 [error] [client 127.0.0.1] PHP Warning: Unknown: open(/tmp/sess_r5nrmu4ugqguqqe83rs53lq6k0, O_RDWR) failed: Permission denied (13) in Unknown on line 0 [error] [client 127.0.0.1] PHP Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0 This is really frustrating.

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• Why domain.com appears as theplant.com when hosted on hostgator?

  - by silow

  I have a script that's supposed to detect the url of its caller website. If the caller is another website, it should give something like http://callersite.com. I'm using this line of php code (though I suspect this won't matter for sysadmins) gethostbyaddr($_SERVER['REMOTE_ADDR']) I'm testing with a caller site that's hosted on hostgator. What I'm noticing though is that I don't get callersite.com, I get something like 1a.12.12ab.static.theplanet.com. I don't know what theplanet.com is and why I'm not getting caller site.com. Also what do I need to do to really get the domain of the site making a call to my script? -- Thanks for the explanation. Some have advised I use $_SERVER['HTTP_REFERER'] but it's not what I'm after. My script acts as an API. Another website makes a curl request to it and gets an output and later on presents it to the user. So http referrer gives false since the caller site.com is making a direct call to me. So any hope?

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• Server Intermittently Inaccessible Externally (but Accessible Internally Continuously)

  - by nicorellius

  I have a CRM on a server on a network. We have a static IP and another server outward facing. We use port-forwarding to map to the CRM, so that when you go to the IP or the FQDN, you get to the CRM: xxx.xxx.xxx.xxx crm.example.com Internally, we can access the CRM by going to crm or crm.example.com Lately, I've been noticing that accessing the server from outside the network times out or gives 503, bad gateway. During that time, I can also SSH (different port, so this works) into the outward facing computer and access the server just fine. I have a robot monitoring the site and indeed via HTTP monitoring the site is going down periodically. I looked through the Apache server access and error logs and nothing stuck out at me so I'm a bit confused as to what could be going on. I also searched the access logs for 503 and found nothing. When I run tracert from outside the network, it appears the packets basically make it through the wider area servers (Comcast city and county servers) and end up dropping at the CRM server's front step. I'm tempted to replace the server because it is older and underpowered but it would be nice to know what is going on. Any ideas what to do next?

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• Cron job checking for changes in Git repository

  - by HNygard

  We have just moved our server configs to a Git repository. Therefore there should not be any changes in any of the repository folders. I was thinking about how I could set up a cron job to check for any uncommited changes. How could a cron job be set up to check for changes in a Git repository? Greping the output of the git status command might just do it. Grep and cron jobs are not my strong side. Here are some sample outputs from git status: Standing the folder containing the git repository (e.g. /path/gitrepo/) with changed files: $ git status # On branch master # Changes not staged for commit: # (use "git add <file>..." to update what will be committed) # (use "git checkout -- <file>..." to discard changes in working directory) # # modified: apache2/sites-enabled/000-default # # Untracked files: # (use "git add <file>..." to include in what will be committed) # # apache2/conf.d/test no changes added to commit (use "git add" and/or "git commit -a") Standing in the folder when there is no changes: $ git status # On branch master nothing to commit (working directory clean) Update: Synced up with origin is not important. There should be no local changes. Local files that must be in place go into the .gitignore file. In addition to the server configs there are also git repos for content (static web sites, web apps, wordpress, etc). None of the repositories should have local changes. We might use Puppet in the long run since its being used for development of one of the web apps.

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• MBR seems to be gone

  - by bobobobo

  So, horror story for everyone. I bought two spanking new HDD's. MM!! Gbitage. I removed all my old HDD's, physically labelled them, and was preparing to install all new HDD's (fresh sys install included!) To make sure what HDD was what, I popped each OLD HDD (data filleD!) into a Thermaltake Blacx toaster.. surprisingly BOTH couldn't be read. I didn't have static on my hands! I'm certain of it. I touched metal, touched wood, before beginning this all. Thinking that was strage, I hauled up the new sys, installed Win XP (of course!) on the new HDD, and now the two OLD HDD's (data filled!) that were entered into the toaster cannot be read. And they had tons of data on them. I read about MBR's being nuked and it sounds like that is what it is. But I'm at a loss what to do. There are so many MBR recovery programs out there, I kind of feel overwhelmed. I don't want to lose my data by just pikcing one, yet it seems so close within reach, I'm not panicking anymore.. Anybody have a play by play that I could follow? I just don't want to spend $900 on data recovery centers if I can do this myself..

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• linux networking: how to redirect incoming connections from old server to new server?

  - by aliz

  hi I'm in the process of moving my old server to a new server, but i will keep the old server running for database replication and load balancing, etc. each server has a separate internet connection with a static ip, and they are connected through a local Ethernet connection. I've got Ubuntu 8.04 32-bit running on old server and Debian 6.0 64-bit on new one. shorewall firewall is installed on both servers. there are some outdoor devices which are periodically sending data to port 43597 for old server IP address. I can run multiple instances of the network service which is responsible for receiving data from devices on a server but on different ports. here's the question: how can I run the service on new server and have connections coming to old server redirected to it, and new devices can still connect to new server's IP address preferably on the same port and same service? until all devices get updated to send to new server. I've tried a shorewall DNAT rule, but seems like new server's default route should be changed to ethernet connection, which breaks other things. I also found about redir utility, but still haven't tried it. is there any best practice or simple solution for such a scenario, i'm not aware of? thanks in advance.

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• Cant ping ip on LAN. Port forward works fine though.

  - by Anoop

  I have a Solaris 11 machine running inside the LAN. It is a default install. I can access the machine and ping it if I ssh into my router (if it matters, it is running dd-wrt). I cannot ping the Solaris machine using ip address from any other machine inside the LAN. But if I setup port forwarding everything works perfectly fine. I can also use the port forward from outside the LAN (from my office) - which is good and how I want it to be. I can SSH and ping and do pretty much everything else from outside as well as inside but only as long as I have the port forwarded from my router. Why would I not be able to ping or ssh or even access the Solaris 11 machine from within the LAN - I have checked and couldn't find any firewall running on the Solaris 11 box. I even tried disabling every known firewall on the router (dd-wrt, it had something like SPI firewall running). I even tried setting a static IP for my Solaris box but all in vain! Please help me understand how and why this happens!! Thanks.

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