SSH port forwarding
Feb. 16, 2010, 6:51 p.m.
In one of my previous post I made a tutorial how to bypass corporate firewalls and gain access into your office computer. It work well if you are at your home and you need ssh access (or any other service) to your office computer. However if the situation is reversed ...
[ Linux ] [ Networking ] [ security ] [ shell ] [ ssh ]
Opensolaris server with COMSTAR and zfs
Nov. 8, 2009, 6:49 p.m.
I've being playing around with Sun's Opensolaris for a while and I'm quite pleased with it to say at least. Opensolaris 2009.06 comes with few nifty features and software like dtrace, zfs, COMSTAR, etc.
I tried it a while ago as a desktop system, and was ...
[ iscsi ] [ Networking ] [ Storage ]
Howto create rsync server
Oct. 21, 2009, 6:46 p.m.
There are tons of reasons why would one want to create a rsync server. For example you wish to backup your data to a remote server but you don't want to backup everything every time.
rsync is an open source utility that provides fast incremental file transfer. rsync is ...
[ Linux ] [ Networking ]
Munin centralized monitoring on Centos
Oct. 9, 2009, 6:45 p.m.
So recently I went nuts having to login onto each server to look at its munin graphs. While you have few servers it's doable, but managing large farms and checking up on them while having to login into each is just pain in the ass.
So what to do ...
[ cPanel ] [ Linux ] [ monitoring ] [ Networking ]
Firewalling xen bridge
April 19, 2009, 6:28 p.m.
Occasionally you will wish to block certain ports to your DomUs from Dom0. By default you wish to allow any traffic from and to DomU but for some security considerations, I found it to be wise to block some ports to and from my clients DomUs. One such port range ...
[ Linux ] [ Networking ] [ security ] [ Virtualization ]
Secure synergy setup
Feb. 1, 2009, 6:27 p.m.
Synergy is a nifty tool for cross platform clipboard, keyboard and mouse sharing. It's reasonably easy to configure synergy server for use with multiple synergy clients. Doing so will spare you some time while working on multiple computers at your desk at once. I use it at office to ...
[ Networking ] [ security ] [ ssh ]
Bypassing corporate firewall with reverse ssh port forwarding
Jan. 18, 2009, 6:25 p.m.
Probably lots of you are behind some sort of very restrictive corporate firewall. Unable to access your office pc from home because of firewall policies. In normal cases this scenario is more than welcomed. No outsiders should be allowed to access internal parts of secure network! Ideally companies will setup ...
[ Networking ] [ security ] [ ssh ]
Ubuntu Intrepid on Dell XPS M1530
Dec. 29, 2008, 6:24 p.m.
By default my Dell xps M1530 came with preinstalled windows vista, Media direct and all those fancy stuff, naturally it all had to go away. For some time I used it with dual boot, and installed Dell Media direct. Naturally I used anything else then Ubuntu so rarely it didn ...
[ Linux ] [ Networking ] [ Ubuntu ]
SSH basics
Nov. 17, 2008, 6:17 p.m.
Using ssh and its functionality should be a second nature to all Linux sysadmins, for some users some aspects of ssh are still a mystery, so let's shed some light on it. Here you will not learn basics shell commands and usage, I will simply try to explain usage ...
[ Linux ] [ Networking ] [ security ] [ shell ] [ ssh ]
Fetching remote content with curl
Oct. 8, 2008, 1:02 p.m.
Lately I see lots of problems with bunch of website scripts still using fopen() function to retrieve remote urls. Usually problem isn't in scripts themselves but in the mere fact that url_functions are more and more often disabled in webhost's php configuration. I can't say I blame ...
[ Networking ] [ Php ] [ security ]
Vodafone mobile and Ubuntu
March 10, 2008, 12:58 p.m.
A while a go, I've tried a Vodafone's Mobile connect pciexpress card on my laptop running Ubuntu, it worked perfectly! I've installed the Betavine's vodafone linux driver and managed to get online without a sweat. While in testing I managed to physically hurt my pciexpress slot ...
[ Linux ] [ Linux Desktop ] [ Networking ] [ Ubuntu ]