Firewall products are typically used to control incoming and outgoing connection attempts, blocking some or all as necessary. In a few cases, Access for Windows functions also act as server programs as well servicing incoming requests that could originate from a different system on the network. IBM Access for Windows is mainly a client application designed to communicate with the IBM® i OS™ products across a network. While some of the information in this document might be applicable when using an external firewall (for example, a properly configured router), the information herein should be read in the context of a PC software firewall product such as Windows Firewall or ZoneAlarm. For information about those, see Informational APAR II12227. This document does not discuss ports or applications on the server to which the client attempts to connect. Note: This document is not intended to be a tutorial on firewalls. However, by default it does block unsolicited incoming connection attempts to programs or ports, unless the proper exceptions are configured within Windows Firewall.
Windows Firewall does not block outgoing connection attempts. Starting with Service Pack 2 of Microsoft Windows XP, Windows Firewall is enabled by default. This document provides Access for Windows program and port information so that your firewall can be configured for Access for Windows outgoing and incoming connection requests. Because IBM Access for Windows relies on the ability to make outgoing and receive incoming connections, use of a firewall product to protect a PC can cause Access for Windows functions to fail. Firewall products are typically used to control incoming and outgoing connection attempts and blocking some or all.
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