List TCP Connections Sorted By Host and Most Connections

Gregg

Assuming your system still has netstat installed (Slackware 15.0 does :^), you can summarize the TCP connections on you host using the following command:

$ netstat -ntu|awk '{print $5}'|cut -d: -f1 -s|sort|uniq -c|sort -nk1 -r 3 52.50.230.xxx 3 104.18.27.xxx 3 104.18.26.xxx 2 205.166.94.xx 2 192.168.1.xx 2 142.251.40.xxx 2 104.18.13.xx 1 74.120.9.xxx 1 66.255.245.xxx 1 54.154.65.xxx 1 52.96.182.xxx 1 45.56.116.xxx 1 45.33.73.xxx 1 34.117.65.xx 1 20.190.135.xx 1 192.168.122.xxx 1 192.168.1.xx 1 172.253.63.xxx 1 162.159.61.x 1 162.125.21.x 1 142.251.40.xxx 1 142.251.32.xxx 1 142.251.16.xxx 1 127.0.0.x