Network manager blocked all incoming traffic

Network manager blocked all incoming traffic

Post by hhcaldero » Thu, 29 Jul 2004 13:31:53

Hello all,

If anyone can help me with the following question, it will be
appreciated ...

The network manager of my building (I live in a university dorm)
blocked all ports to traffic originated outside the building. Even
though this might be a good security decision, it is causing problems
to people like me who needs to access his home computer from a lab in
the university. Before the blockage, I was able to initiate the
connection and login to my home computer from the university labs. My
question: Is there any software (maybe along the lines of a Virtual
Private Network) that would allow me to access my home computer even
though it is behind a server that won't answer calls originated
outside of the dorm? I could start the software in the morning,
before leaving the dorm, and then try to access it from my lab.

Note that the other way around has no problems. This is, I am able to
connect to my lab's computer from my home without problems.

Both computers (home and lab) are running Windows XP Professional.

Hector C.

1. IPTables blocks all incoming traffic from other networks

2. SBS 2003 blocks incoming traffic from internet gateway

Hi All

I have the following setup:

- A brand new SBS 2003 installation connected to my local network.

- A router/firewall that acts as gateway to the internet.

I have configured the router such that incoming traffic on port 443
(https://...) is routed to the SBS. However, the default setup for the
SBS is that it rejects traffic coming from the gateway so trying to
e.g. read mail from outside the premises is a no-go (and yes, it works
on the LAN).

What are the security aspects of un-blocking incoming traffic from the
router on the SBS?


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