Novell GROUPWISE 7 - INTEROPERABILITY GUIDE, Manual

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Implementing the Internet Agent in a Microsoft Cluster 415
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43.1.4 Preparing Your Firewall for the Internet Agent
The Internet Agent receives incoming messages on the IP address of the Internet Agent resource
group. Your firewall configuration must be modified to allow inbound TCP/IP traffic from the
Internet to the Internet Agent IP address on the following standard ports:
Table 43-1
Standard Ports
By default, the Internet Agent sends outgoing messages on the IP address of the node where it is
running. If you decide to use this default configuration, your firewall must be configured to allow
outbound TCP/IP traffic from all nodes on the Internet Agent resource group’s possible owners list.
If the Internet Agent has a large number of nodes in its possible owners list, you could configure the
Internet Agent to send outgoing messages to a relay host, which would then send them out through
the firewall using its own IP address rather than the IP address of the particular node where the
Internet Agent is running. This reduces the amount of modification to your firewall required to set
up the Internet Agent. However, if the relay host goes down, all outgoing messages are delayed.
As another alternative, you can configure the Internet Agent to use its resource group IP address for
sending as well as receiving messages. Setup instructions for this configuration are provided in
“Forcing Use of the Internet Agent Secondary IP Address” on page 81 , which you can complete
after installing the Internet Agent.
In preparation for installing the Internet Agent, configure your firewall as needed to handle the
Internet Agent’s use of node and resource group IP addresses when sending and receiving messages.
43.1.5 Deciding Where to Install the Internet Agent and Its MTA
The default Internet Agent installation directory is
c:\grpwise\gwia
. As with the MTA and the
POA, you can choose to install the Internet Agent and its MTA to each node in the cluster or to the
shared disk of the Internet Agent resource group. For a discussion of these alternatives, see
INTERNET AGENT CLUSTERING WORKSHEET
Under Item 5: MTA Network Information , transfer the resource group IP address and cluster-unique
port numbers from the Internet Agent section of the Network Address Worksheet to the Internet Agent
Clustering Worksheet.
Under Item 7: Internet Agent Network Information , transfer the resource group IP address (the same
as for its MTA) and the cluster-unique Internet Agent port number from the Internet Agent section of
the Network Address Worksheet to the Internet Agent Clustering Worksheet.
Protocol Standard Port
IMAP4 143
LDAP 389
POP3 110
SMTP 25