Method 3: Connecting to a web server on a separate machine to the CICS host.

The following reasons have been stated for using this method: 

• off loading processing 
• historical - an internet server may have already been implemented on another platform 
• availability - if the MVS region has regular outages for maintenance 
• TCP/IP is not installed on the mainframe server 

3.1 CICS Internet Gateway

3.2 CICS Transaction Gateway