Port / NetBIOS

[Steve Douglas]

I am set up with RH9, SA 2.61, MS December release, 1.5 GB of RAM, 80 GB
duplexed drives.  The MS system is forwards from the DMZ through the
firewall to my internal Exchange 5.5 file server.

My firewall logs are filled by the megatons with errors showing the Exchange
email server attempting to send NetBios calls (port 137) to the DMZ MS
gateway.  I guess this is normal considering the exchange system is trying
to do its job (as far as Microsoft is concerned) in identifying the system
that is passing it all this email.

My firewall has this port blocked for obvious reasons.  Is this normal and
is there anything that I should do further to shut the exchange server up or
just live with it?

Thanks.

SD :-)