On Nov 9, 11:47am, David wrote:
}
} well, simply blocking traffic from outdoors and using NAT is usually OK
} for a SOHO or regular user, but in general access lists ARE NOT A
} FIREWALL. They don't keep status of connections and do any realtime
} inspection of traffic looking for more then just IP/TCP/UDP
Just a minor correction, IP Filter is capable of keeping status.
However, it can't do inspection of the packet (i.e. make sure that
somebody isn't trying to send the SMTP DEBUG command). IP Filter is
available for the following OS'es:
Solaris/Solaris-x86 2.3 - 8
SunOS 4.1.1 - 4.1.4
NetBSD 1.0 - 1.4
FreeBSD 2.0.0 - 2.2.8
BSD/OS-1.1 - 4
IRIX 6.2
HP-UX 11.00 (IPFilter 3.5alpha*)
See http://coombs.anu.edu.au/~avalon/ip-filter.html for more information.
}-- End of excerpt from David
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