Firewall Logs

Auditing rules

These rules do not block anything, they just log allowed traffic or special events.

Port Knocking

Advanced Port Knock System

ASL_KNOCK

This logs when a potential knock packet comes in when using the advanced portknocking system. It does not block or shun anything.

ASL_KNOCK_IN

This logs the IP of the source of a client when its connects to a portknock protected port. It does not block or shun anything.

Simple Port Knock System

ASL_SKNOCK

This logs when a potential knock packet comes in when using the simply portknocking system. It does not block or shun anything.

ASL_SKNOCK_IN

This logs the IP of the source of a client when its connects to a portknock protected port. It does not block or shun anything.

Blocking/Dropping rules

Automatic Blocks

ASL_AR_DROP

ASL has blocked packets from an IP that was automatically shunned by ASL.ASL_AUTOSHUN_BLOCK

User Defined Blocks

ASL_SMTP_OUT

ASL has blocked a user that you have not authorized from sending SMTP traffic outbound. ASL does not block any users from sending SMTP traffic outbound by default.

ASL_BLACKLIST_BLOCK

ASL has blocked traffic from an IP that you placed on the ASL blacklist. This blacklist is manually created by the user, and ASL will not add IPs to this blacklist. The blacklist is empty by default.

ASL_GEO_BLOCK

ASL has blocked traffic from a country that you have configured ASL to block via ASLs geoblocking. This is manually configured by the user, and ASL will not automatically add countries to the geoblocking lists. No countries are blocked by default.

DROP_ASL_RATE

The Ratelimit you configured for this port have been exceeded. ASL does not set any rate limits by default.

DROP_ASL_INPUT

ASL has dropped an inbound packet because you have configured it to do this. ASL does not block connections to any ports by default.

ASL_OUTPUT

ASL has dropped a packet because you have configured it to do this. ASL does not block outbound connections to any ports by default.

RBLS

ASL_AUTOSHUN_BLOCK

ASL has blocked an IP that is on the autoshun RBL list because you have configured ASL to block IPs from this RBL. ASL does not block this by default.

ASL_CIARMY_BLOCK

ASL has blocked an IP that is on the ciarmy RBL list because you have configured ASL to block IPs from this RBL. ASL does not block this by default.

ASL_DSHIELD_BLOCK

ASL has blocked an IP that is on the dshield RBL list because you have configured ASL to block IPs from this RBL. ASL does not block this by default.

ASL_ELASSO_BLOCK

ASL has blocked an IP that is on the spamhaus elasso RBL list because you have configured ASL to block IPs from this RBL. ASL does not block this by default.

ASL_LASSO_BLOCK

ASL has blocked an IP that is on the spamhaus lasso RBL list because you have configured ASL to block IPs from this RBL. ASL does not block this by default.

ASL_EMERGING_THREATS_BLOCK

ASL has blocked an IP that is on the emerging threats RBL list because you have configured ASL to block IPs from this RBL. ASL does not block this by default.

ASL_OPENBL_BLOCK

ASL has blocked an IP that is on the openbl RBL list because you have configured ASL to block IPs from this RBL. ASL does not block this by default.

ASL_OPENPROXIES_BLOCK

ASL has blocked an IP that is on the openproxies RBL list because you have configured ASL to block IPs from this RBL. ASL does not block this by default.

Bad Packets

ASL_INVALID_INPUT

ASL had dropped an incoming invalid packet.

ASL_INVALID_FWD

ASL had dropped an invalid packet in the FORWARD chain.

ASL_INVALID_OUTPUT

ASL had dropped an outgoing invalid packet.

Port scans

DROP_ASL_ADVSCAN

ASL has detected and blocked a portscan using the advanced portscan detector in ASL.

DROP_ASL_PORTSCAN

ASL has detected and blocked a portscan.

DROP_ASL_GSCAN

ASL has detected a potential banner grab portscan.

DROP_ASL_CNSCAN

ASL has detected and blocked a connect() portscan.

DROP_ASL_SSCAN

ASL has detected and blocked a potential SYN portscan.

DROP_ASL_STSCAN

ASL has detected and blocked a stealth portscan.

DROP_ASL_MSS

ASL has detected a packet that is too small to be valid.