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

Forum Discussion

Jessica_42876's avatar
Jessica_42876
Icon for Nimbostratus rankNimbostratus
Jul 01, 2015

Destination net unreachable

Hi!   I have a problem.In the infraestructure the gateway of the Private Network is the selfIP into F5 device (10.5.3.1). In the server when I typed www.f5.com the answer of the ping is "Reply fr...
application delivery
deployment
design
LTM
Jessica_42876's avatar
Jessica_42876
Icon for Nimbostratus rankNimbostratus
Jul 01, 2015

Hi!

 

I change it to all protocols.

 

 

and It doesn't work. what else could I do? Jessy

 

VernonWells's avatar
VernonWells
Icon for Employee rankEmployee
Jul 01, 2015
As @arpydays mentioned, do you have an HTTP proxy configured for your browser? That would explain why HTTP requests from a browser are working, but other traffic (like ping) is not. Have you added a default route to the BIG-IP (under Network >> Routes)? Are you using SNAT? The easiest thing to try is Automap SNAT. It is further down in the VS configuration, under "Source Address Translation". SNAT may or may not be required depending on your architecture. Also, ensure that "Address Translation" and "Port Translation" are not selected (ordinarily, setting the Type to "Forwarding (IP)" should unset those, but it's good to check).