https://community.checkpoint.com/t5/General-Topics/Check-Point-Inspection-points-iIoO/td-p/34938 The default order of the "fw monitor" inspection points is:
i (input): this is the first inspection point, where packets enter the firewall.
l (local): this is the second inspection point, where packets are processed locally by the firewall, before being forwarded to the next hop.
o (output): this is the third inspection point, where packets are sent out to their final destination.
O (offload): this is the fourth inspection point, where packets are offloaded to hardware acceleration for faster processing.

https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk105762

Explanation
Solr is the enterprise search platform that handles the state-of-the-art search capabilities in SmartConsole.
When a user searches for data in SmartConsole, Solr handles the request and gets the data from the PostgreSQL tables. Solr stores some partial data in a cache for better search performance.
Solr uses port 8983
Solr is deployed at $FWDIR/solr
from:
https://sc1.checkpoint.com/documents/R80.30/WebAdminGuides/EN/CP_R80.30_Multi-DomainSecurityManag