LinuxQuestions.org
Help answer threads with 0 replies.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Networking
User Name
Password
Linux - Networking This forum is for any issue related to networks or networking.
Routing, network cards, OSI, etc. Anything is fair game.

Notices

Reply
 
Search this Thread
Old 12-29-2006, 11:27 AM   #1
michaewlewis
LQ Newbie
 
Registered: Dec 2006
Posts: 25

Rep: Reputation: 15
closed loop security


I use two main systems where I work. One system is running Windows XP Pro and is connected to a closed loop control systems network but not to the internet because of security risks. The other system is running OpenSuSE 10.1 and is connected to the internet only.
I would like to connect the two computers over a separate network for the purpose of using Synergy to share the keyboard and mouse but am not sure of the security risks involved. If I were to put an extra nic in each system, is there a way to disallow all traffic except what is coming from Synergy?
What are the chances of someone entering the closed loop network in a setup like this?
How about some other ideas to use one keyboard/mouse for both systems like Synergy allows?
 
Old 12-29-2006, 12:40 PM   #2
Sertys
Member
 
Registered: Oct 2006
Posts: 42

Rep: Reputation: 15
Well, it's not that your machines are gonna forward traffic by themselves to the CLC net, but the risk is if someone breaks into your openSuSe machine, then breaks the windows and voila - he has access to the secured net. In terms of security measures, that would not stand any audit unless you carefully firewall your machines. Desktop suse is hard to rootkit if used properly, just don't get suspicious services on that machine e.g. http/ftp/gopher/name servers.
 
Old 12-29-2006, 01:14 PM   #3
michaewlewis
LQ Newbie
 
Registered: Dec 2006
Posts: 25

Original Poster
Rep: Reputation: 15
so what if I disallow all traffic on all ports except for the one that synergy uses?
Is that even possible to do on a second nic, while still allowing everything on the first nic, for internet?
or perhaps I should be looking for a hardware solution.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
for loop only works properly on first loop symo0009 Programming 1 12-25-2005 05:17 PM
[Security Questions] Last Login, how good is this feature for security breach info? t3gah Linux - Security 2 06-14-2005 01:02 AM
which one is a common Security loop hole palanisaravanan Linux - Security 5 04-26-2004 05:01 PM


All times are GMT -5. The time now is 07:41 PM.

Main Menu
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration