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  • Does Chrome use a different DNS server while Firefox and IE use a different one?

    - by Jian Lin
    Is the common set up for Chrome that it will use a different DNS server, while Firefox and IE will use a different one? My Chrome (including the one on the virtual PC) will sometimes "Resolving host" and wait there for 20, 30 seconds, while Firefox and IE won't. (so after 20, 30 seconds with a blank page, the page will finally not be able to load). So is there something that Chrome is doing that make the difference?

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  • are you supposed to be able to "ping" specific pages of websites, or just the domain name?

    - by Bec
    (sorry, i think my jargon is a bit off there, not sure) I'm trying to work out what's going on with my podcasts not downloading properly, to see whether it was my pod-catching software or the connection i tried doing a ping on the podcast URL e.g. www.abc.net.au/rn/podcast/feeds/ockham.xml and it failed (i got "could not find host"), it works for the first part of it though www.abc.net.au I can get to the xml page in a web browser though, and ping doesn't work on the podcasts which have been downloading right either.

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  • How to access Jenkins remotely on Ubuntu 12.04 server?

    - by quincyglenn
    I have installed Jenkins and opened port 8080 on Ubuntu 12.04 server but still can't access Jenkins remotely. Below is the procedures I took. # Install Jenkins, enable UFW and open port 8080 sudo apt-get install jenkins sudo ufw enable sudo ufw allow 8080 sudo ufw reload # Check the status sudo ufw status 8080 ALLOW Anywhere 8080 ALLOW Anywhere (v6) # Locally curl -I localhost:8080 HTTP/1.1 200 OK Server: Winstone Servlet Engine v0.9.10 ... # On an external machine curl -I [ip]:8080 couldn't connect to host

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  • Rails 2 and Ngnix: https pages can't load css or js (but will load graphics)

    - by Max Williams
    ADMISSION: i've posted this same question on stackoverflow, before realising it's probabaly better suited to superuser, but it kind of depends on the answer: If it turns out to be a problem in my nginx config, it's definitely superuser. If it turns out to be a problem in my Rails config (or code) then it's arguably stackoverflow. I'm adding some https pages to my rails site. In order to test it locally, i'm running my site under one mongrel_rails instance (on 3000) and nginx. I've managed to get my nginx config to the point where i can actually go to the https pages, and they load. Except, the javascript and css files all fail to load: looking in the Network tab in chrome web tools, i can see that it is trying to load them via an https url. Eg, one of the non-working file urls is https://cmw-local.co.uk/stylesheets/cmw-logged-out.css?1383759216 I have these set up (or at least think i do) in my nginx config to redirect to the http versions of the static files. This seems to be working for graphics, but not for css and js files. If i click on this in the Network tab, it takes me to the above url, which redirects to the http version. So, the redirect seems to be working in some sense, but not when they're loaded by an https page. Like i say, i thought i had this covered in the second try_files directive in my config below, but maybe not. Can anyone see what i'm doing wrong? thanks, Max Here's my nginx config - sorry it's a bit lengthy! I think the error is likely to be in the first (ssl) server block: server { listen 443 ssl; keepalive_timeout 70; ssl_certificate /home/max/work/charanga/elearn_container/elearn/config/nginx/certs/max-local-server.crt; ssl_certificate_key /home/max/work/charanga/elearn_container/elearn/config/nginx/certs/max-local-server.key; ssl_session_cache shared:SSL:10m; ssl_session_timeout 10m; ssl_protocols SSLv3 TLSv1; ssl_ciphers RC4:HIGH:!aNULL:!MD5; ssl_prefer_server_ciphers on; server_name elearning.dev cmw-dev.co.uk cmw-dev.com cmw-nginx.co.uk cmw-local.co.uk; root /home/max/work/charanga/elearn_container/elearn; # ensure that we serve css, js, other statics when requested # as SSL, but if the files don't exist (i.e. any non /basket controller) # then redirect to the non-https version location / { try_files $uri @non-ssl-redirect; } # securely serve everything under /basket (/basket/checkout etc) # we need general too, because of the email/username checking location ~ ^/(basket|general|cmw/account/check_username_availability) { # make sure cached copies are revalidated once they're stale add_header Cache-Control "public, must-revalidate, proxy-revalidate"; # this serves Rails static files that exist without running # other rewrite tests try_files $uri @rails-ssl; expires 1h; } location @non-ssl-redirect { return 301 http://$host$request_uri; } location @rails-ssl { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_read_timeout 180; proxy_next_upstream off; proxy_pass http://127.0.0.1:3000; expires 0d; } } #upstream elrs { # server 127.0.0.1:3000; #} server { listen 80; server_name elearning.dev cmw-dev.co.uk cmw-dev.com cmw-nginx.co.uk cmw-local.co.uk; root /home/max/work/charanga/elearn_container/elearn; access_log /home/max/work/charanga/elearn_container/elearn/log/access.log; error_log /home/max/work/charanga/elearn_container/elearn/log/error.log debug; client_max_body_size 50M; index index.html index.htm; # gzip html, css & javascript, but don't gzip javascript for pre-SP2 MSIE6 (i.e. those *without* SV1 in their user-agent string) gzip on; gzip_http_version 1.1; gzip_vary on; gzip_comp_level 6; gzip_proxied any; gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript; #text/html # make sure gzip does not lose large gzipped js or css files # see http://blog.leetsoft.com/2007/7/25/nginx-gzip-ssl gzip_buffers 16 8k; # Disable gzip for certain browsers. #gzip_disable "MSIE [1-6].(?!.*SV1)"; gzip_disable "MSIE [1-6]"; # blank gif like it's 1995 location = /images/blank.gif { empty_gif; } # don't serve files beginning with dots location ~ /\. { access_log off; log_not_found off; deny all; } # we don't care if these are missing location = /robots.txt { log_not_found off; } location = /favicon.ico { log_not_found off; } location ~ affiliate.xml { log_not_found off; } location ~ copyright.xml { log_not_found off; } # convert urls with multiple slashes to a single / if ($request ~ /+ ) { rewrite ^(/)+(.*) /$2 break; } # X-Accel-Redirect # Don't tie up mongrels with serving the lesson zips or exes, let Nginx do it instead location /zips { internal; root /var/www/apps/e_learning_resource/shared/assets; } location /tmp { internal; root /; } location /mnt{ root /; } # resource library thumbnails should be served as usual location ~ ^/resource_library/.*/*thumbnail.jpg$ { if (!-f $request_filename) { rewrite ^(.*)$ /images/no-thumb.png break; } expires 1m; } # don't make Rails generate the dynamic routes to the dcr and swf, we'll do it here location ~ "lesson viewer.dcr" { rewrite ^(.*)$ "/assets/players/lesson viewer.dcr" break; } # we need this rule so we don't serve the older lessonviewer when the rule below is matched location = /assets/players/virgin_lesson_viewer/_cha5513/lessonViewer.swf { rewrite ^(.*)$ /assets/players/virgin_lesson_viewer/_cha5513/lessonViewer.swf break; } location ~ v6lessonViewer.swf { rewrite ^(.*)$ /assets/players/v6lessonViewer.swf break; } location ~ lessonViewer.swf { rewrite ^(.*)$ /assets/players/lessonViewer.swf break; } location ~ lgn111.dat { empty_gif; } # try to get autocomplete school names from memcache first, then # fallback to rails when we can't location /schools/autocomplete { set $memcached_key $uri?q=$arg_q; memcached_pass 127.0.0.1:11211; default_type text/html; error_page 404 =200 @rails; # 404 not really! Hand off to rails } location / { # make sure cached copies are revalidated once they're stale add_header Cache-Control "public, must-revalidate, proxy-revalidate"; # this serves Rails static files that exist without running other rewrite tests try_files $uri @rails; expires 1h; } location @rails { proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header Host $http_host; proxy_redirect off; proxy_read_timeout 180; proxy_next_upstream off; proxy_pass http://127.0.0.1:3000; expires 0d; } }

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  • Remote access to internal machine (ssh port-forwarding)

    - by MacUsers
    I have a server (serv05) at work with a public ip, hosting two KVM guests - vtest1 & vtest2 - in two different private network - 192.168.122.0 & 192.168.100.0 - respectively, this way: [root@serv05 ~]# ip -o addr show | grep -w inet 1: lo inet 127.0.0.1/8 scope host lo 2: eth0 inet xxx.xxx.xx.197/24 brd xxx.xxx.xx.255 scope global eth0 4: virbr1 inet 192.168.100.1/24 brd 192.168.100.255 scope global virbr1 6: virbr0 inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0 # [root@serv05 ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr1 xxx.xxx.xx.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0 192.168.122.0 0.0.0.0 255.255.255.0 U 0 0 0 virbr0 169.254.0.0 0.0.0.0 255.255.0.0 U 1002 0 0 eth0 0.0.0.0 xxx.xxx.xx.62 0.0.0.0 UG 0 0 0 eth0 I've also setup IP FORWARDing and Masquerading this way: iptables --table nat --append POSTROUTING --out-interface eth0 -j MASQUERADE iptables --append FORWARD --in-interface virbr0 -j ACCEPT All works up to this point. If I want to remote access vtest1 (or vtest2) first I ssh to serv05 and then from there ssh to vtest1. Is there a way to setup a port forwarding so that vtest1 can be accessed directly from the outside world? This is what I probably need to setup: external_ip (tcp port 4444) -> DNAT -> 192.168.122.50 (tcp port 22) I know it's easily do'able using a SOHO router but can't figure out how can I do that on a Linux box. Any help form you guys?? Cheers!! Update: 1 Now I've made ssh to listen to both of the ports: [root@serv05 ssh]# netstat -tulpn | grep ssh tcp 0 0 xxx.xxx.xx.197:22 0.0.0.0:* LISTEN 5092/sshd tcp 0 0 xxx.xxx.xx.197:4444 0.0.0.0:* LISTEN 5092/sshd and port 4444 is allowed in the iptables rules: [root@serv05 sysconfig]# grep 4444 iptables -A PREROUTING -i eth0 -p tcp -m tcp --dport 4444 -j DNAT --to-destination 192.168.122.50:22 -A INPUT -p tcp -m state --state NEW -m tcp --dport 4444 -j ACCEPT -A FORWARD -i eth0 -p tcp -m tcp --dport 4444 -j ACCEPT But I'm getting connection refused: maci:~ santa$ telnet serv05 4444 Trying xxx.xxx.xx.197... telnet: connect to address xxx.xxx.xx.197: Connection refused telnet: Unable to connect to remote host Any idea what's I'm still missing? Cheers!!

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  • Apache shuts down from time to time

    - by Dugi
    I'm having trouble with my VPS as it keeps shutting apache down at least twice a day. The server is running on CentOS 6 with the latest apache. By shutting down I mean I have to go into SSH and type in this command in order to bring it up again: /sbin/service httpd start I'm not very good with servers and my host doesn't seem to have a nice customer service. Any help would be appreciated as these unexpected downtimes really know to kill one's mood.

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  • How can I set up a dual-site Storage Daemon in Bacula (mirror the backup)

    - by Andy
    On site A, I have sucessfully set up a bacula director on one host, several File Daemons on the hosts I want to backup, and finally one Storage Daemon where the backup actually is stored. If disaster struck the building Site A, I want a second Storage Daemon on another site, Site B. The Filesets, Director etc would be the same, except the jobs will be stored on the other Storage Daemon as well. Are there any best practises on this?

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  • Networking is broken in my VMware 10.0 VMs after upgrading to Windows 8.1

    - by Michael Geary
    I have a VMware Workstation 10.0 installation with several virtual networks including the default host-only and NAT networks. After upgrading to Windows 8.1, the NAT network was not working. I booted an Ubuntu VM with the default network setup that was previously working, and it sat for a long time during startup saying it was waiting for the network. After it finally started up, an ifconfig showed no IP address for eth0. How can I fix the broken network?

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  • wget-ing protected content with exported cookies

    - by XXL
    I have exported a pair of cookies from Firefox that are valid for the URL in question and tried accessing/downloading the protected content off that address, but the end result is a return to the login page. I have tried doing the same thing for 3 other websites with similar outcome. Any clues as to what I might be doing wrong? The syntax I'm using: wget --load--cookies=FILE URL ----------------------------------------------- DEBUG output created by Wget 1.12 on linux-gnu. Stored cookie www.x.org -1 (ANY) / <permanent> <insecure> [expiry 1901-12-13 22:25:44] c_secure_login lz8xZQ%3D%3D Stored cookie www.x.org -1 (ANY) / <permanent> <insecure> [expiry 1901-12-13 22:25:44] c_secure_pass 2fd4e1c67a2d28fced849ee1bb76e74a Stored cookie www.x.org -1 (ANY) / <permanent> <insecure> [expiry 1901-12-13 22:25:44] c_secure_uid GZX4TDA%3D --2011-01-14 13:57:02-- www.x.org/download.php?id=397003 Resolving www.x.org... 1.1.1.1 Caching www.x.org => 1.1.1.1 Connecting to www.x.org|1.1.1.1|:80... connected. Created socket 5. Releasing 0x0943ef20 (new refcount 1). ---request begin--- GET /download.php?id=397003 HTTP/1.0 User-Agent: Wget/1.12 (linux-gnu) Accept: */* Host: www.x.org Connection: Keep-Alive ---request end--- HTTP request sent, awaiting response... ---response begin--- HTTP/1.1 302 Found Date: Fri, 14 Jan 2011 11:26:19 GMT Server: Apache X-Powered-By: PHP/5.2.6-1+lenny8 Set-Cookie: PHPSESSID=5f2fd97103f8988554394f23c5897765; path=/ Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Location: www.x.org/login.php?returnto=download.php%3Fid%3D397003 Vary: Accept-Encoding Content-Length: 0 Keep-Alive: timeout=15, max=100 Connection: Keep-Alive Content-Type: text/html ---response end--- 302 Found Stored cookie www.x.org -1 (ANY) / <session> <insecure> [expiry none] PHPSESSID 5f2fd97103f8988554394f23c5897765 Registered socket 5 for persistent reuse. Location: www.x.org/login.php?returnto=download.php%3Fid%3D397003 [following] Skipping 0 bytes of body: [] done. --2011-01-14 13:57:02-- www.x.org/login.php?returnto=download.php%3Fid%3D397003 Reusing existing connection to www.x.org:80. Reusing fd 5. ---request begin--- GET /login.php?returnto=download.php%3Fid%3D397003 HTTP/1.0 User-Agent: Wget/1.12 (linux-gnu) Accept: */* Host: www.x.org Connection: Keep-Alive Cookie: PHPSESSID=5f2fd97103f8988554394f23c5897765 ---request end--- HTTP request sent, awaiting response... ---response begin--- HTTP/1.1 200 OK Date: Fri, 14 Jan 2011 11:26:20 GMT Server: Apache X-Powered-By: PHP/5.2.6-1+lenny8 Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Vary: Accept-Encoding Content-Length: 2171 Keep-Alive: timeout=15, max=99 Connection: Keep-Alive Content-Type: text/html ---response end--- 200 OK Length: 2171 (2.1K) [text/html] Saving to: `x.out' 0K .. 100% 18.7M=0s 2011-01-14 13:57:02 (18.7 MB/s) - `x.out' saved [2171/2171]

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  • Ubuntu 9.10 Virtual Machine does not respond on VMWare Fusion

    - by mgpyone
    I've just installed Ubuntu 9.10 Edition on my VMWare Fusion. host is Mac. I've installed successfully and able to use . Then, I've shut down and reopen again. Then, it's no longer response. like that I've check Setting. it shows that running. I've waited for long time but no response yet. Any idea better then reinstalling again ?

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  • Have a server, need to figure out a method of backup

    - by PolishHurricane
    My company has an older Dell 2650 server running ArchLinux x64: http://www.dell.com/downloads/global/products/pedge/en/2650_specs.pdf (2 x 2.4GHz Intel Xeon w/around 3287 RAM according to "free -m") We use it to host our internal company site and to post some information from our orders to and we'd like the ability to keep it up as much as possible. What we require: - It needs to always be functional from 8am to 4pm for our data entry person to use it and others to do other things required on it. - If it goes down, we need a quick way to get the machine running again. - If it goes down, we would like to have the data backed up. Some of the major problems include: - The servers old and it may have memory issues - We don't know when one of the hard drives could fail - Our power goes out here once in a while We have a battery backup, but that's pretty much it and it's not for long term. If the server does go down, we have another system in place to store order information that comes in while it's down and repost it when it's back, but we need it up during the day. So we're wondering, what should we get for options? These are the things we thought of, sort of: Setup RAID 1, but that would involve wiping everything right? If we do that, how would we transfer the data over without messing up the server? We could buy an extra server or 2 off eBay for $100, the same model, is that practical or should we get something else? Should we buy a PC or another better server and host off that because it is if anything easier to exchange parts? Should we keep extra parts handy incase it implodes? Should we buy/use backup software? We hear drobo's are cool, but suck. Perhaps there is a software solution to this problem that backs up to another machine or gets us up and running again quickly. Also, if we are to purchase hardware, what is decent? Does anybody know of one for ArchLinux/Linux? We both know a ton about computers but we're kind of unsure what step to take with this, especially with this type of server. Thanks

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  • How to open port 25 on the server

    - by liuxingruo
    I'm using centOS. I want to implement a smtp mail server, and I have installed postfix and dovecot(both have been set correctly). I tried to telnet the 25 port, but it returns Unable to connect to remote host: Connection refused So, How can I open the 25 port? Thanks!

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  • Trying to setup virtual hosts on unix PHP on nginx

    - by user1634653
    I have tried to install php5-fpm and Nginx on Ubuntu machine, but I got a problem. When I have only one virtual host on a unix port it is all fine but when I try to add another virtual host Nginx goes to default web page "Welcome to Nginx!" but when I run it on a tcp port example port 9000 it work fine with multisites. It is a fresh install of ubuntu 11.10, Nginx 1.2.3 with php5-fpm installed. It also has extra php installs such as php-apc. I can only give the links to the virtual hosts because I am doing it from a mobile phone. Here are the links for the two virtual hosts I am using: http://ic0nic.co.uk/ic0nic.txt, http://ic0nic.co.uk/sourproxy.txt also I want to use unix port because I find it a whole lot faster. Edit: Here are the nginx configs server { server_name ic0nic.co.uk www.ic0nic.co.uk; root /var/www/ic0nic.co.uk; listen 8080; index index.html index.htm index.php; include conf.d/drop; location / { try_files $uri $uri/ /index.php?q=$uri&$args; } location ~ \.php$ { fastcgi_buffers 8 256k; fastcgi_buffer_size 128k; fastcgi_intercept_errors on; include fastcgi_params; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_pass unix:/dev/shm/php-fpm-www.sock; root /var/www/ic0nic.co.uk; } } server { server_name sourproxy.co.uk www.sourproxy.co.uk; root /var/www/sourproxy.co.uk/; listen 8080; index index.html index.htm index.php; include conf.d/drop; location / { try_files $uri $uri/ /index.php?q=$uri&$args; } location ~ \.php$ { fastcgi_buffers 8 256k; fastcgi_buffer_size 128k; fastcgi_intercept_errors on; include fastcgi_params; fastcgi_param SCRIPT_FILENAME /var/www/sourproxy.co.uk$fastcgi_script_name; fastcgi_pass unix:/dev/shm/php-fpm-www.sock; } }

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  • Error when sending mail to an external mail server from Postfix on CentOS

    - by yankitwizzy
    I just installed Postfix. i have not yet done any configuration on it. Each time I try to use it to sendmail from another application, it keeps telling me that COnnection was refused from the ip I want to connect to. This is the error I get [root@localhost /]# telnet mail.abuse.org Trying 69.43.160.153... telnet: connect to address 69.43.160.153: Connection refused telnet: Unable to connect to remote host: Connection refused COuld someone please help me the problem

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  • Any tools for webvpn

    - by Stan
    OS: WinXP I need to Web VPN to RDP to remote host, but I don't want to use default java RDP window. So just wondering is there any tool that can do webvpn and provide a RDP function? Thanks.

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  • pipe from tar to ftp

    - by facha
    I have ftp access to a server I do not control. I'd like to start sending archives of my server's FS to that ftp. The problem is I don't have enough free space on my system to create a backup archive first (and store it on my fs) and then send it to ftp. So I'm wondering if it is possible to do something like this: tar -jcpvf - / | ftp-put ftp://user:pass@host/file.tbz Normally there is no problem doing it over ssh, but in this case I only have ftp available.

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  • Rules for setting hostname [duplicate]

    - by Ilia Rostovtsev
    This question already has an answer here: Hostnames - What are they all about? 5 answers Setting the hostname: FQDN or short name? 6 answers It's thought that for the hostname should be used FQDN. I have a doubts about whether using: host.domain.ltd and domain.ltd for the hostname is the same thing and will be equally correct / acceptable? I'm willing to use domain.ltd for the hostname. Is it alright?

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  • No output in Linux Keyboard Logger running in VirtualBox

    - by PabloG
    I'm trying to run LKL (Linux Keyboard Logger) in a Ubuntu 9.04 VirtualBox VM (VirtualBox 2.2.2 running on a XP host). The package installs fine, but when I try to run it lkl -l -k /usr/share/lkl/keymaps/us_km -o ./kbd.log & it hogs the CPU usage to 50% and never logs a keystroke (in fact the kbd.log file is never created) Any clues? TIA

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  • IIS7 80 port outside doesn't work

    - by ihorko
    I have created web site, added to IIS 7, in the binding set up host name as "mysite.com". (here "mysite.com" is my registered domain that points to my IP address) So when I assigned port 8095 and open site as mysite.com:8095 it succesfully opens on my local pc and outsite my network pc, but if I set up port 80 there, http://mysite.com opens only on my pc, but not in outside pc. Firewall is disabled. How to resolve that problem, please help!?

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  • How to increase the number of vmware.log files?

    - by 27b6
    Hi all, Is there any way to increase the number of vmware.log files for a given VM (Vmware Server 1.0.4, host: SLES 10)? Problem is, that one of our VMs crashes every now and then, and I can only see the four log files vmware.log, vmware-0.log, vmware-1.log and vmware-2.log each of which contains records starting after the crash when trying to boot. So I have no information of what happened before the crash. Thanks, Ingo

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  • Redirect all traffic to specified hosts behind NAT

    - by biesiad
    Is there a possibility to redirect all traffic to specified hosts behind NAT? For example i have a server, a domain "mydomain.com" and 3 hosts behind NAT. I wish to configure 3 subdomains: host1.mydomain.com host2.mydomain.com host2.mydomain.com and each of them to redirect all ports to specified host in local net. That redirection should provide funcionality like this: http://host1.mydomain.com (can be achieved using apache) ssh [email protected] (???) and other protocols on diferent ports Thanks for any help.

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  • CNAME - how will the url be in the http request

    - by Traveller
    A newbie question regarding dns records Let's say I've configured, abc.example.com - A 10.x.x.x and a CNAME for xyz.example.com CNAME for xyz.example.com - abc.example.com when a user does an http request for xyz.example.com what happens when the request reach the 10.x.x.x server. Will the URL be abc.example.com or xyz.example.com? (trying to find out if virtual host in apache need to be updated) Thanks much

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