bleeding bandwidth ?

[qdada]

Two windows computers on a permanent internet connection;

one with a firewall and

one that is just fully patched and without a firewall ....

Does the one without a firewall bleed bandwidth any more or less than the one with a firewall due to on going port scans out there ?

 

[DFantom]

Does the one without a firewall bleed bandwidth any more or less than the one with a firewall due to on going port scans out there ?

bleed = use?
I would think the one without a firewall would use marginally more, depending on the port scans. Some port scans just check if they get an ACK response packet. In such a case if the port is option or closed (which most firewalls do) the amount of data is about the same.
There are firewalls that completely hide by not responding at all, these would save minor amounts of bandwidth in such scan.
The final type of scan actually does a connection to work out various other information (example: connects to port 25 and sends a ehlo to try to work out what mail server and version is running). These cases the usage would be higher on the non firewalled machine.

 

[qdada]

Thanks.

 

[MrG]

Ya, you really wont save much