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angelikatyborska/_Netstat.md

Created April 27, 2018 07:08
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List the number of open HTTP connections per IP in Linux
Raw
_Netstat.md

List the number of open HTTP connections per IP in Linux

This was useful when fighting a DDoS attack on one of our web servers.

Credit for it goes to our server provider, Memset, who helped us to stop the attack.

Raw
http-open-connections.sh
#!/bin/bash
netstat -an | grep :80 | grep -v FIN_WAIT | awk {'print $5'} | cut -d: -f 1 | sort | uniq -c | sort -nk 1
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