To export the current custom IPS rules from your IPS-enabled platform to an ASCII file named ips_custom_rules_export.txt, use the Custom Rules page.

Prerequisites
You are logged in to the Web UI of the IPS-enabled platform as Operator or Admin.
The IPS rules database on the appliance contains one or more custom IPS rules.
Procedure
Choose IPS > Custom Rules.
The page lists the custom IPS rules in the IPS rules database on the appliance.
Click Export Rules.
Open or save the file named ips_custom_rules_export.txt.

Choose to open the file or save it, and then click OK.