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upd 799 open port
The UDP:799 port is open on my rhel 3 server.
I can't find which service is behind it. I've tried everything with no success. Now I suspect to be a backdoor or something like this :(
1. #nmap -sU localhost
799/udp open unknown
2. netsta -tupan | grep 799
udp 0 0 0.0.0.0:799 0.0.0.0:* -
3.lsof -i :799 -> nothing
4. lsof -V -i UDP -> nothing related
Do you have any idea? I thing this is very difficult of impossible finding what is behind this port.
What could I do next? Please give me some hints!!
Thanks in advance!
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if this port is blocked by a firewall, try unblocking it and scanning again. I wouldn't be surprised if it then showed up as closed.
http://www.dslreports.com/forum/rema...p,16~mode=flat
open basically means that it didn't receive a "this port is closed" message. That means that it's certainly possible for no machine to be there, or for an open port to exist.
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udp:799 is not filtered.
I set up a sniffer and I don't get back any ICMP dest port unreachable. In fact I don't get back anything from this port.
I've tried to scan other udp ports and if the port is closed I get back icmp dest port unreachable so my ip/tcp stack works as it supposed to work.
I tell you, I've already tried almost anything. :(
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