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[OPENSSH] Fail2Ban SSH Suspicious Activity

[OPENSSH] Fail2Ban SSH Suspicious Activity

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Detection Logic

alert any $EXTERNAL_NET any -> $HOME_NET any (msg:"[OPENSSH] Fail2Ban SSH Suspicious Activity"; content: "Fail2Ban"; content:!"Fail2Ban Service"; default_proto: tcp; default_dst_port: $SSH_PORT; classtype: brute-force; parse_src_ip: 1; sid: 5001974; rev:5;)

Field Validations

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