RE: socks 5

["Th@t Gurl" <undead001 () hotmail com>]

Hi,

Socks 4 and 5 proxys are very usefull for people looking to bypass company 
firewalls. Basically if they can establish a connection to a remote socks 
proxy they can do anything the remote machine's connection allows(usually 
anything). For example, say your company doesn't allow icq. Someone brings a 
disk to work, installs icq and connects to a socks proxy. They can talk to 
anyone they want and the company firewall logs will only log the connections 
to the proxy host and not see where the connection is really going.

Its kinda hard for me to explain, as im not all that techy, but if your not 
filtering outgoing traffic to 1080 tcp then they can probably run about 
anything they want.

Socks 4 usually requires a userid
Socks 5 usually requires a userid / password

Hope this helps,
Cassidy




> From: "Kenzo" <kenzo_chin () hotmail com>
> To: <security-basics () securityfocus com>
> Subject: socks 5
> Date: Thu, 18 Mar 2004 11:49:52 -0600
>
> We have websense internet filter working with our Pix firewall to monitor
> web traffic.
> Today I noticed an attempted connection from our webserver to an external 
> IP
> address using the socks 5 protocol.
> googling around I found out that socks 5 is used for some kind of remote
> access or authentication.
> I asked our webmaster and he has no Id what the remote IP address is.
> what could it be? did someone manage to own our box and using socks to
> bypass our firewall?
> Can anyone tell me more about socks?
>
> Thanks.
>
> ---------------------------------------------------------------------------
> Ethical Hacking at the InfoSec Institute. Mention this ad and get $545 off
> any course! All of our class sizes are guaranteed to be 10 students or less
> to facilitate one-on-one interaction with one of our expert instructors.
> Attend a course taught by an expert instructor with years of in-the-field
> pen testing experience in our state of the art hacking lab. Master the 
> skills
> of an Ethical Hacker to better assess the security of your organization.
> Visit us at:
> http://www.infosecinstitute.com/courses/ethical_hacking_training.html
> ----------------------------------------------------------------------------

_________________________________________________________________
MSN Toolbar provides one-click access to Hotmail from any Web page – FREE 
download! http://clk.atdmt.com/AVE/go/onm00200413ave/direct/01/


---------------------------------------------------------------------------
Ethical Hacking at the InfoSec Institute. Mention this ad and get $545 off 
any course! All of our class sizes are guaranteed to be 10 students or less 
to facilitate one-on-one interaction with one of our expert instructors. 
Attend a course taught by an expert instructor with years of in-the-field 
pen testing experience in our state of the art hacking lab. Master the skills 
of an Ethical Hacker to better assess the security of your organization. 
Visit us at: 
http://www.infosecinstitute.com/courses/ethical_hacking_training.html
----------------------------------------------------------------------------