fw sam_policy del

Description

The "fw sam_policy del" and "fw6 sam_policy del" commands:

Delete one configured Suspicious Activity Monitoring (SAM) rule at a time.
Delete one configured Rate Limiting rule at a time.

Notes:

These commands are interchangeable:
- For IPv4: "fw sam_policy" and "fw samp".
- For IPv6: "fw6 sam_policy" and "fw6 samp".
You can run these commands in Gaia Clish, or Expert mode.
Security Gateway stores the SAM Policy rules in the $FWDIR/database/sam_policy.db file.
Security Gateway stores the SAM Policy management settings in the $FWDIR/database/sam_policy.mng file.

Important:

Configuration you make with these commands, survives reboot.
VSX mode does not support Suspicious Activity Policy configured in SmartView Monitor. See sk79700.
In VSX mode, you must go to the context of an applicable Virtual System.
- In Gaia Clish, run: set virtual-system <VSID>
- In the Expert mode, run: vsenv <VSID>
In a Cluster, you must configure all the Cluster Members in the same way.

Best Practice - The SAM Policy rules consume some CPU resources on Security Gateway. Set an expiration for rules that gives you time to investigate, but does not affect performance. Keep only the required SAM Policy rules. If you confirm that an activity is risky, edit the Security Policy, educate users, or otherwise handle the risk.

Syntax for IPv4

fw [-d] sam_policy del '<Rule UID>'

Syntax for IPv6

fw6 [-d] sam_policy del '<Rule UID>'

Parameters

Parameter

Description

-d

Runs the command in debug mode.

Use only if you troubleshoot the command itself.

Best Practice - If you use this parameter, then redirect the output to a file, or use the script command to save the entire CLI session.

'<Rule UID>'

Specifies the UID of the rule you wish to delete.

Important:

The quote marks and angle brackets ('<...>') are mandatory.
To see the Rule UID, run the "fw sam_policy get" command.

Procedure

List all the existing rules in the Suspicious Activity Monitoring policy database

List all the existing rules in the Suspicious Activity Monitoring policy database.

For IPv4, run:

fw sam_policy get

For IPv6, run:

fw6 sam_policy get

The rules show in this format:

operation=add uid=<Value1,Value2,Value3,Value4> target=... timeout=... action=... log= ... name= ... comment=... originator= ... src_ip_addr=... req_tpe=...

Example for IPv4:

operation=add uid=<5ac3965f,00000000,3403a8c0,0000264a> target=all timeout=300 action=notify log=log name=Test\ Rule comment=Notify\ about\ traffic\ from\ 1.1.1.1 originator=John\ Doe src_ip_addr=1.1.1.1 req_tpe=ip

Delete a rule from the list by its UID

For IPv4, run:

fw [-d] sam_policy del '<Rule UID>'

For IPv6, run:

fw6 [-d] sam_policy del '<Rule UID>'

Example for IPv4:

fw samp del '<5ac3965f,00000000,3403a8c0,0000264a>'

Add the flush-only rule

For IPv4, run:

fw samp add -t 2 quota flush true

For IPv6, run:

fw6 samp add -t 2 quota flush true

Explanation:

The "fw samp del" and "fw6 samp del" commands only remove a rule from the persistent database. The Security Gateway continues to enforce the deleted rule until the next time you compiled and load a policy. To force the rule deletion immediately, you must enter a flush-only rule right after the "fw samp del" and "fw6 samp del" command. This flush-only rule immediately deletes the rule you specified in the previous step, and times out in 2 seconds.

Best Practice - Specify a short timeout period for the flush-only rules. This prevents accumulation of rules that are obsolete in the database.