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  1. How To Check Apache Connections

    Introduction to Apache server You can use the following command to see how many connections a specific IP has to an Apache server running on port 80. The more connections from an IP, the more of a chance that the server could be under some type of attack from that IP. netstat -tn --inet 2> /dev/null| grep ':80' | awk '/tcp[\ ]*[0-9]+[\ ]*[0-9]+[\ ]+[^\ ]+[\ ]*[^\ ]*/ { print $5; }' | cut -d':' -f1 | sort | uniq -c | sort -n ...