PASSPORT Knowledge Base
Connection Issues

Date Published: August 22, 2003

Date Updated: March 3, 2008

Title

Connecting Through a Firewall

Product

PASSPORT Web to Host

Emulation Types

TN3270, TN5250, VT, SCO ANSI, Wyse 60

Issue

How can I connect a PASSPORT Web to Host session through my firewall?

Solution

PASSPORT Web to Host requires either HTTP (port 80) or HTTPS (port 443) for all web pages and also TELNET (port 23) for communication with the host. These ports must be opened on the firewall to successfully establish a PASSPORT Web to Host session.

More Information

If Telnet (port 23) access through the firewall is not permitted, one of the following solutions may be used:

1. Virtual Private Network (VPN)

2. Windows Terminal Services

3. Microsoft Internet Security & Acceleration (ISA) Server

Keywords

firewall, connect, port 80, port 23, port 443, http, telnet