hi!
  i run a udp nmap scan against my server and found that most udp ports
are open which should have been closed and the ones with specific
source ip, like my access server and aaa server are reported to be
filtered.

why those udp ports are open? 

i have this on my rule:

/sbin/ipchains -A input -i eth0 -s 0.0.0.0/0 -l -j DENY

thnx,
ina

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