Strange port usage

[ASEAN SCHOLAR]

i'm using linux 2.4.22
there's strange behaviour in my box
sometimes when i run netstat -atu
i get udp 0 0 *:878 *:*
an another time *:876 or *:875
i run rpcinfo but none of those ports are listed.
i run nmap -sU and i get this result " 878/udp open
unknown "
how to find out what program/service is using this
port?
is this trojan?

anyone can help?

thanks

Robert


		
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