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

Forum Discussion

Drew666's avatar
Drew666
Icon for Nimbostratus rankNimbostratus
Oct 21, 2019
Solved

What am I doing wrong...................???

Hi All,   I'm attempting to test a very simple iRule - basically extracting the incoming destination TCP port and then matching the extracted port to a number of "IF /ELSE IF" statements for a ma...
application delivery
big-ip
irules
  • Lidev's avatar
    Lidev
    Oct 21, 2019

    Hello Drew,

    To fix an understand the meaning of the curly braces warning, you can take a look on K57410758

    Regards

Lidev's avatar
Lidev
Icon for Nacreous rankNacreous
Oct 21, 2019

Hello Drew,

To fix an understand the meaning of the curly braces warning, you can take a look on K57410758

Regards

Drew666's avatar
Drew666
Icon for Nimbostratus rankNimbostratus
Oct 22, 2019

Hi Lidev,

 

Thank you for the curly braces reference - that certainly "fix" the TCL EXPR part of the script with the extra bracket set, which appears to affect the downstream parts before.

 

The script is basically functioning now - (yipee) except a really weird issue where if TCP port 6000 is used, it won't match nor even log any error messages etc - nothing! If the say 7000 (or anything not in the 6000s range) is used instead, works perfectly. The 7000 substitution proves the script is working but unable at this stage to analyse why "6000" etc will not????

 

Cheers

Drew