snort iptables drop

[Gokan Atmaca via Snort-users <snort-users () lists snort org>]

Hello

I want to block ip addresses that attack brute force with Snort. Can
you help with this ?
I tried the following. But the rule did not work.

-> my rules:

alert tcp $EXTERNAL_NET any -> $HOME_NET 22 (msg:"BAD-TRAFFIC SSH
bruteforce login attempt"; flow:to_server,established; content:"SSH-";
depth:4; detection_filter:track by_src, count 5, seconds
60;classtype:misc-activity; sid:19559; rev:2;)

drop tcp $EXTERNAL_NET any -> $HOME_NET 22 (msg:"BAD-TRAFFIC SSH
bruteforce login attempt"; flow:to_server,established; content:"SSH-";
depth:4; detection_filter:track by_src, count 5, seconds 60;
classtype:misc-activity; sid:19559; rev:2;)

-> iptables rule:
# iptables -A INPUT -p tcp --dport 22 -j NFQUEUE --queue-num 1

-> snort:

# snort -A console -q -c /etc/snort/snort.conf  --daq nfq --daq-var queue=1

Thank you.
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