Snort mailing list archives
snort3: reject rule problem when stream inspector is on
From: Meridoff via Snort-users <snort-users () lists snort org>
Date: Tue, 30 Jul 2019 15:14:50 +0300
Hello I have reject rule that send Network unreachable for ping. It's Ok, but only for 1st packet. The next ping packets are silently dropped and not detected and logged at all. My simple Config: --========= HOME_NET = "any" EXTERNAL_NET = "any" daq={ module_dirs = { "/usr/lib/daq" }, variables = { "queue=1", "device=ip", "proto=ip4"}, module = "nfq" } daq.instances = { id = 0, variables = { "queue=1"} } ips = { mode = "inline", enable_builtin_rules = false } wizard = default_wizard snort["-z"]=1 alert_fast = {file=true} stream={} stream_icmp={} reject={control="port"} binder={ use = { type = "wizard" } } ips.rules = [[ include /var/cache/snort/m.rules ]] snort["-Q"]=true --========= And rule in /var/cache/snort/m.rules: reject icmp 192.168.33.10 any -> any any ( gid:8000; sid:1; ) ==== If I remove stream {} and/or stream_icmp {} , then ALL OK: each packet is dropped, logged and ICMP Port unreach is sending on each dropped packet. Thanks
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- snort3: reject rule problem when stream inspector is on Meridoff via Snort-users (Jul 30)