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 ]
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 ]
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 ]