TN3270 for iPhone - iPad
Frequently Asked Questions for TN3270 ?
General
- Change log
- Difference between Lite and Paid version
- What type of SSL is used
- Cannot make a connection to the IBM Mainframe
- How to connect to an IBM Mainframe from the Internet (EDGE)
Troubleshooting
- Change log
TN3270 v 1.0 was released 14 September 2008 .TN3270 v 1.1 was released 15 July 2009. Changes:
- - Solved DNS problem seen with OS 3.0
- - Better screen handling
TN3270 v 1.2 was released 14 September 2009. Changes:
- - In OS 3.0, the auto-correction option (Settings - General - keyboard) could give a crash
TN3270 v 1.3 was released April 2010. Changes:
- - Support for iPad
- - Better screen handling
TN3270 v 1.4 Changes:
- - Bug fixing
TN3270 v 1.5 was released August 2011. Changes:
- - Fixed crash bug with many fields on the screen.
- - Jump to next field could fail.
- - Better code for saving the configuration.
- - Configuration screens in portrait mode, could crash.
- Difference between Lite and Paid version
Compared to the Lite version the full version has:- Full Fxx keyboard
- What type of SSL is used
TN3270 can use the SSL protocol build into the iPhone OS.- Cannot make a connection to the IBM Mainframe
Either- wrong IP address for the IBM Mainframe
- A firewall stopping access on port 23.
- The iPhone/iPod is not on the same network as the IBM Mainframe
- How to connect to an IBM Mainframe from the Internet (EDGE)
To allow a connection with the iPhone on the EDGE network or another wifi network, maybe at your local Cafe, you must configure the router/firewall protecting your office network to allow traffic on port 23 or 992 if using SSL. This could be a security risk! Read the router manual for advice.An example:
I have a router at my office, which connect to the Internet. It has IP address 88.1.2.44 on the Internet. The router has a fixed IP address on the Internet, if your internet provider (ISP) gives a dynamic address, a solution could be to use a service as NO-IP
Our Office IBM Mainframe has a fixed IP address on the local network (wifi) at
192.168.2.2
In the router firewall configuration I have configured, if it receives data on port
23 (or 992 if SSL is enabled in TN3270), forward it to 192.168.2.2.
When on the EDGE network with the iPhone, I will in TN3270 as IBM Mainframe IP address write
88.1.2.44 , and as port 23 (not the IP address for the IBM Mainframe!)
