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Linux - list all clients connected to my http server over 80 port
1 points
In this article, we're going to have a look at how to print all people/users/client connected to my http server (over 80 port) by tcp/tcp6 protocol and their IP adresses with netstat command under Bash in Linux.
Type in terminal:
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netstat -tn 2>/dev/null | grep -E '\s[0-9.]+:80\s' | awk '{print $5}' | cut -d : -f 1 | sort | uniq -c | sort -nrWhere:
netstat -tn 2>/dev/null | returns informations all tcp/tcp6 connections |
grep -E '\s[0-9.]+:80\s' | filters rows that contains ip addres with 80 port using regular expressions |
awk '{print $5}' | prints only column 5th that is described as "Foreign Address" that contains connected client ip address with his remote port |
cut -d : -f 1 | extracts only ip address for connected client |
sort | sorts rows to let them to be counted with next command (uniq command) |
uniq -c | counts (-c) neighbouring rows and print them as: number_of_rows row_text |
sort -nr | makes numeric sort (-n) and reverse result (-r) |
Console print:
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6 172.68.11.242
4 172.69.54.623
4 172.68.244.834
2 162.158.94.1635
2 162.158.158.2006
2 162.158.154.667
1 198.41.230.758
1 172.69.71.739
1 172.69.55.17110
1 172.69.54.22411
1 172.69.35.5812
1 172.69.159.13713
1 172.69.134.8614
1 172.68.63.10615
1 172.68.62.4516
1 172.68.62.3917
1 172.68.246.6718
1 172.68.246.4319
1 172.68.245.6620
1 172.68.245.150