ISA Server firewall ports

ISA Server

Application protocol Protocol Ports
Configuration Storage (domain) TCP 2171 (note 1)
Configuration Storage (replication) TCP 2173 (note 1)
Configuration Storage (workgroup) TCP 2172 (note 1)
Firewall Client Application TCP/UDP 1025-65535 (note 2)
Firewall Client Control Channel TCP/UDP 1745 (note 3)
Firewall Control Channel TCP 3847 (note 1)
RPC TCP 135 (note 6)
Randomly allocated high TCP ports (note 6) TCP random port number between 1024 – 65535
random port number between 49152 – 65535 (note 7)
Web Management TCP 2175 (note 1, 4)
Web Proxy Client TCP 8080 (note 5)


  1. This port is not used with ISA 2000.
  2. FWC application transport and protocols are negotiated within the FWC control channel.
  3. ISA 2000 FWC control uses UDP; ISA 2004 and 2006 use TCP.
  4. OEM uses Firewall Web Management to provide non-MMC management of ISA Server.
  5.  This port is also used for intra-array traffic.
  6.  This port is used only by the ISA management MMC during remote server and service status monitoring.
  7. This is the range in Windows Server 2008 R2, Windows 7, Windows Server 2008, and Windows Vista.
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One Response to ISA Server firewall ports

  1. rg443 says:

    The only reason for being a professional writer is that you can’t help it.
    Leo Rosten

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