02-15-2013
There are many reasons fragmentation is not preferred, and here is another. Since packet fragmentation is an IP level function, the udp or tcp header is just payload, and it is only in the first fragment.
I suppose you could write a stateful version of the ip*table that caches the udp/tcp header and the routing or discard decision it received for fragmented packets. But it is possible for fragements to get out of order, so the first fragment might not arrive first.
A proxy firewall like socks would assemble packets before deciding to forward them or discard them, and if forwarded, they would be re-fragmented.
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LEARN ABOUT SUSE
nrbroadcast
NRBROADCAST(5) Linux Programmer's Manual NRBROADCAST(5)
NAME
nrbroadcast - NET/ROM routing broadcast configuration file.
DESCRIPTION
Nrbroadcast is an ASCII file that contains information about each of the physical AX.25 ports that are to have NET/ROM routing broadcasts
transmitted from them.
Each line has the following format, each field being delimited by white space:
port minobs defqual worstqual verbose
The field descriptions are:
port the port name of the AX.25 port to broadcast on.
minobs this is the minimum obsolescence count of a routing table entry to be broadcast on this port.
defqual this is the default quality of an incoming routing broadcast from an unknown neighbour.
worstqual this is the worst quality node received from a routing broadcast that will be added to our routing table.
verbose whether the routes to all of my nodes in my routing table, or just the nodes resident on my machine are to be broad-
cast.
FILES
/etc/ax25/nrbroadcast
/etc/ax25/axports
SEE ALSO
call(1), netrom(4), axports(5), netromd(8), nrparms(8).
Linux 2 August 1996 NRBROADCAST(5)