Script to get the list of services running on system in below format: Protocol – Port – Program Name for LIST in `netstat -nalpe | egrep -i ‘^tcp|^udp’ | grep ‘LISTEN’ | awk ‘{ print $1"|"$4"|"$9 }’`; do PROT=`echo ${LIST} | cut -d"|" -f1`; PORT=`echo ${LIST} | cut -d"|" -f2`; PORT=${PORT##*:}; PROG=`echo ${LIST} | cut…
netstat
How to get detail info of TCP or UDP packets
[root@example root]# netstat -u -sUdp: 95043801 packets received 2059 packets to unknown port received. 12041 packet receive errors 81665255 packets sent [root@exampleroot]# netstat -t -sTcp: 2119 active connections openings 14472 passive connection openings 0 failed connection attempts 10 connection resets received 1372 connections established 101805453 segments received 190009367 segments send out 18675 segments retransmited 0…