Since the firewall is dropping inbound packets by default it usually does not You should not select all traffic as home since likely none of the rules will $EXTERNAL_NET is defined as being not the home net, which explains why Using advanced mode you can choose an external address, butīear in mind you will not know which machine was really involved in the attackĪnd it should really be a static address or network. The $HOME_NET can be configured, but usually it is a static net defined Alert tls $HOME_NET any -> $EXTERNAL_NET any (msg: "ET TROJAN Observed Glupteba CnC Domain in TLS SNI" flow:established,to_server tls_sni content: "myinfoart.xyz" depth:13 isdataat:!1,relative metadata: former_category MALWARE reference:md5,4cc43c345aa4d6e8fd2d0b6747c3d996 classtype:trojan-activity sid:2029751 rev:2 metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, deployment Perimeter, signature_severity Major, created_at 2020_03_30, updated_at 2020_03_30 )
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