configuration of f5 load balancer in BIG IP version 14.1.2 guide

Could you elaborate a bit more? Your example could have multiple replies, not knowing how you have the BIGIP and network configured.

Can you ping 10.15.13.133? --Which is a VIP IP? Also, are you able to ping the pool members of the VIP from the BIGIP?

----------------------------------------------------------------------

BIG-IP LTM-DNS operations guide

https://support.f5.com/csp/article/K70671013

Yes. I can ping from LAN the Virtual server IP. It seems the AFM needs to be configured to allow access. AFM is enabled. The device is in firewall mode,so it acts like a default deny FW. You;ll have to create an AFM policy/rule set that will allow 443 on that address. Please share guide on AFM policy configuration.

 take a look on this link, it will help you : https://clouddocs.f5.com/training/community/firewall/html/class1/module1/lab3.html

This might help you to get to know more on AFM

https://support.f5.com/csp/article/K38201755