I'm use the net from behind a firewall and am doing some tests transmitting
data from a server outside the firewall to myself. I have noticed the
following: I'm able to receive the data transmitted via UDP to me using ANY
port. However, I'm able to receive the data transmitted via TCP to me using
only SOME ports, these are only a very few open ports (I checked their
numbers using a port scanner that I created). I know for security reasons
that most firewalls have only a very limited number of ports open for
incoming data transmitted via TCP. I'm wondering if allowing incoming data
transmitted via UDP to 'pass though' ALL ports to a client is a typical
configuration for a firewall?? or do most firewalls have only SOME ports
open for incoming UDP streams??
Also, in the case of some firewalls that only have a certain number of ports
open for incoming UDP streams, are there any 'famous'/typical ports that are
usually open on these firewalls for incoming UDP streams??
Thanks in advance.
Ahmed
-
[To unsubscribe, send mail to [EMAIL PROTECTED] with
"unsubscribe firewalls" in the body of the message.]
