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traceroute = portscan (?)

Greetings,

I've defined my network (perhaps improperly) as my-net: 192.168.1.0/255.255.255.0

As a Packet Filter Rule I've defined:

my-net { traceroute } Any Allow 

However, when I do a traceroute from 192.168.1.20 to www.astaro.org  (for example)

I get this in my /var/log/kernel:

Oct 25 00:27:31 vishnu kernel: Portscan detected: IN=eth0 OUT=eth1 SRC=192.168.1.20 DST=128.242.218.125 LEN=38 TOS=0x00 PREC=0x00 TTL=16 ID=57424 PROTO=UDP SPT=57373 DPT=33485 LEN=18

I'm at a loss. Please help. :-)

Cheers,
-zeek


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