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  3. January 2022

Re: ssl telnet vs firewall

Hello Miguel,

Am 06.01.2022 um 19:37 schrieb Miguel Peralta <Mperalta8@xxxxxxxxxxx>:

Hello, I have a situation with the SSL telnet with iseries access for windows, it is already configured and it works, but wanting to work in a location that has a firewall does not work, according to the document:

https://www.ibm.com/support/pages/tcpip-ports-required-ibm-i-access-and-related-functions

As you can clearly see, iACS requires a multitude of ports besides the standard telnet/ssl port 992.

It only requires enabling the SSL ports, it has already been done but still does not make a connection, what could be missing?

Additionally, port 449 Server mapper is blocked, would this port be necessary to add to the firewall policies?

Yes, indeed. The only non-ssl port being needed.

PS: I cannot execute CWBPING due to security policies, all types of ping are blocked

Watch the firewall debug for packets being blocked. This helps.

:wq! PoC


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