Check port status on CentOS
12,935
Solution 1
First, you can use netstat
to see state of port.
Second, you can use tcpdump
to see traffic going in and out on that port.
tcpdump -i eth0 "port 5004"
reports traffic on eth0
to port 5004.
Solution 2
You can use lsof -i :5004
to see if any process has that port open. Alternately, if you're not sure about the port in use but do know the process that is listening, you can use lsof -p process_id
to find the port.
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Author by
zozo
Updated on September 17, 2022Comments
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zozo almost 2 years
I have a CentOS machine, and I opened a port on witch I should get a stream (actually it is the 5004 port - rtp). However, seems like the stream is not received.
Is there anyway to check on status of a port? (I mean not on/of... but if anything is received).
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sciurus about 13 yearsI'm curious why this was downvoted; I still believe it is worth checking if the port is in use by the expected program. If it is, then moving on to tcpdump is appropriate.