IBM Support

ISAM cluster network communication and port usage

Question & Answer


Question

When building an ISAM Cluster with a firewall separating internal network and DMZ nodes, what communication must be allowed?

Answer

The following ports - port ranges are listening on the Appliances, and will have to be allowed by the firewall rules.

ComponentPort Number - Range
WebSphere Application Server9080, 9443
Security Access Manager Policy Server7135
Security Access Manager Authorization Server7136,7137
WebSEAL7234
LDAP Server, SSL port636
LDAP Server, non-SSL port389
LMI443
WebSEAL HTTP port 80
WebSEAL HTTPS port 443
Remote Syslog514
SSHD (for clustering communication)22
DSC (when supporting Internal and External clients)9081
ICMP Ping methodn/a

The above list describes the default ports, but are customizable.

As part of the cluster setup, an ERE (External Reference Entity) is used to determine where there is a break in the network. This requires the the firewall to allow an ICMP Ping method.

Related Information

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Product Synonym

ISAM Web Mobile

Document Information

Modified date:
16 June 2018

UID

swg21882852