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November 13, 2009

Detect DDOS Attack in Linux

Filed under: Uncategorized — dh @ 2:23 am

This is a simply command in Linux to check the no. of connection opened per IP.

/bin/netstat -ntu | awk ‘{print $5}’ | cut -d: -f1 | sort | uniq -c | sort -nr |more

Detect size of transfer

iftop -i interface

Auto block DDOS IP ((D)DoS-Deflate)

http://deflate.medialayer.com/

mod_evasive

http://www.eth0.us/mod_evasive

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