Overview

To connect from the local computer (LanGuard for example) to a destination computer, the local computer will Connect From a random high numbered Port (that will be different for each connection) to a Fixed low numbered Port on the destination machine that has a service Listening on that Port (the Port is considered Open for connections). 

This article provides information about the Ports used by GFI LanGuard machines for Listening to the connection requests from remote machines and connecting to remote machines for accessing specific services.

Information

GFI LanGuard uses the following ports:

• Listening Ports on the GFI LanGuard machine (For connections from remote machines to the LanGuard server):

  Service	Description	Communication Protocol	Port	OS Process
  Apache Server (LanGuard 12 and later)	Port used for agent management and patch deployment	TCP	1072	Httpd.exe
  Apache Server (LanGuard 11 and earlier)	Port used for agent management and patch deployment	TCP	1070	Httpd.exe

   

• Connections established from (random high number Ports) on the GFI LanGuard machine to the different Ports for specific services on remote computers:

  Service	Description	Communication Protocol	Port
  EPMAP	Provides dynamically assigned ports for RPC-based services for DCOM	TCP/UDP	135
  NetBIOS	Used for computer discovery and resource sharing	TCP/UDP	137, 139
  SNMP	Used for computer discovery. GFI LanGuard supports only SNMPv1 and SNMPv2c. SNMPv3 and SNMP over TLS/DTLS are not supported	UDP	161
  SMB	Used for auditing computers, agent management, and patch deployment	TCP	445
  SSH	Used for auditing Linux and Mac systems	TCP/UDP	22

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