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Raspberry Pi Raspbian list open ports
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| netstat -lnt | grep LISTEN | awk '{ print ( $4 ) }' | awk 'BEGIN{FS=":"} { print $(NF) }' | sort -n | uniq |
This only works for tcp ports. What about udp ports ?
for udp ports :
netstat -lnu | grep udp | awk '{ print ( $4 ) }' | awk 'BEGIN{FS=":"} { print $(NF) }' | sort -n | uniq
$ netstat -lnt Active Internet connections (only servers) Proto Recv-Q Send-Q Local Address Foreign Address State tcp 0 0 0.0.0.0:42217 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN tcp 0 0 0.0.0.0:22 0.0.0.0:* LISTEN tcp6 0 0 :::5000 :::* LISTEN tcp6 0 0 :::42217 :::* LISTEN tcp6 0 0 :::80 :::* LISTEN tcp6 0 0 :::9171 :::* LISTEN tcp6 0 0 :::22 :::* LISTENFiltered
$ netstat -lnt | grep LISTEN | awk '{ print ( $4 ) }' | awk 'BEGIN{FS=":"} { print $(NF) }' | sort -n | uniq 22 80 5000 9171 42217
🧡👍👏
-l already filters listening ports, so we can omit grep LISTEN
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