[Oisf-users] Suricata doesn't alert

Tuấn Ngọc Trần Lê tranletuanngoc at gmail.com
Mon Sep 23 05:33:26 UTC 2019

I wrote a rule for Suricata to detect ICMP connection and have it loaded.
alert icmp $HOME_NET any -> $HOME_NET any (msg:"ICMP connection attempt";
sid:1000002; rev:1;)

It works fine when I try to ping from a computer in the network  (A) to the
one running Suricata (B).
However, when I ping from (A) to another computer (C), (B) doesn't detect
and alert.
(A), (B) and (C) are being connected to a switch.

Please help me.

Thank you,
Ngoc Tran (Frank)
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