Forum Discussion

UoB-Admin's avatar
UoB-Admin
Icon for Nimbostratus rankNimbostratus
Jan 14, 2022

Hiding the server port number when ssl offloading to an server on a non standard port

HI,

 

I've just started using the F5 platform and have run into a probelm from a 'non standard' server setup.

 

The server is running a non ecrypted webserver on port 1234

 

I have the ssl cert setup on an LTM profile with a VIP listening on port 443.

 

the problem i have is when i go to HTTPS://IPADDRESS the reposnse i get is HTTPS://IPADDRESS:1234/welcome.htm and nothing else shows up. which makes sense as the client can't get to port 1234.

 

How can i make the reposonse return to the client without the server portnumber being included?

 

Thanks,

BIG-IP
devops
LTM
  • KeesvandenBos's avatar
    KeesvandenBos
    Icon for MVP rankMVP
    Jan 14, 2022

    Hi Adam,

     

    Could you post the virtual server configuration of both?

    Use the command: tmsh list ltm virtual <name of the virtual server>

    And any irule attached to these virtual servers.

     

    Cheers,

     

    Kees

  • UoB-Admin's avatar
    UoB-Admin
    Icon for Nimbostratus rankNimbostratus
    Jan 14, 2022

    unfortunatly i don't have access to the command line...

     

    there are no irules in place.

  • KeesvandenBos's avatar
    KeesvandenBos
    Icon for MVP rankMVP
    Jan 14, 2022

    Ok, it a rewrite profile attached?

    If not, could you add a profile to the configuration with these settings:

    client side: https://FDQN/

    server side: http://FQDN:1234/

    And test this.

     

    Cheers,

     

    Kees

  • Niels_van_Sluis's avatar
    Niels_van_Sluis
    Icon for MVP rankMVP
    Jan 14, 2022

    It sounds like the application is sending an absolute self-referencing redirect. You can changing the 'Redirect Rewrite' setting in the http profile of the virtual server. For more information, see this post:

     

    https://devcentral.f5.com/s/articles/rewriting-redirects

     

     

  • UoB-Admin's avatar
    UoB-Admin
    Icon for Nimbostratus rankNimbostratus
    Jan 14, 2022

    There is no rewrite profile attached at the moment.

     

    i'll have a read through that devcenratl post and give that a go.

     

    Thanks