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Full Discussion: Firewalls
Top Forums UNIX for Advanced & Expert Users Firewalls Post 42704 by sleepster on Monday 3rd of November 2003 04:56:44 AM
Old 11-03-2003
Firewalls

Hi,

I was doing abit of reading on firewalls when this question came up.

Is there any command which sets up a firewall that will only allow packets through if they come from a port number less than 1024?

How about a command which allows packets through if they are destined for a port number less than 1024?
 

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RADSNIFF(8)						      System Manager's Manual						       RADSNIFF(8)

NAME
radsniff - dump radius protocol SYNOPSIS
radsniff [-c count] [-d directory] [-F] [-f filter] [-h] [-i interface] [-I filename] [-m] [-p port] [-r filter] [-s secret] [-S] [-w file] [-x] DESCRIPTION
radsniff is a simple wrapper around libpcap. It can also print out the contents of RADIUS packets using the FreeRADIUS dictionaries. OPTIONS
-c count Number of packets to capture. -d directory Directory where the dictionaries are found. -F Filter PCAP file from stdin to stdout. Output file will contain RADIUS packets. -f filter PCAP filter. (default is udp port 1812 or 1813) -h Print usage help information. -i interface Interface to capture. -I filename Read packets from filename. -m Print packet headers only, not contents. -p port Listen for packets on port. -r filter RADIUS attribute filter. -s secret RADIUS secret. -S Sort attributes in the packet. Used to compare server results. -w file Write output packets to file. -x Print out debugging information. SEE ALSO
radiusd(8),pcap(3) AUTHORS
Nicolas Baradakis <nicolas.baradakis@cegetel.net> RADSNIFF(8)
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