Mar 27, 2026 - For details about updated CVE-2025-53521 (BIG-IP APM vulnerability), refer to K000156741.

Forum Discussion

BB1030_11211's avatar
BB1030_11211
Icon for Nimbostratus rankNimbostratus
Dec 13, 2012

Telnet test from tmsh

Hi, I hope someone can help, I'm getting an SSH error when doing a gtm_add from a blank GTM, wanted to verify that FW rules allowed ssh, is there a way I can telnet on port 22 to another GTM using th...
dev
TMSH
Jessed12345's avatar
Jessed12345
Icon for Employee rankEmployee
Dec 17, 2012

Not telnet, but have you considered using traceroute w/TCP? The syntax would be:

run util traceroute -T -p 22

It times out just like regular traceroute if the destination cannot be reached. Seems to work fine on v11.1 and v11.2.