Traffic through ASA 5516 between two outside interfaces on different ISPs

[groupccologin]

Hello all,

I have a situation where I want to allow traffic from one segregated network using private IPs (using Google DNS) to internal LAN (using local DNS) both are using the  same firewall. I am using ASA 5516 and has 2 external interfaces one on ISP A and other on ISP B. Please can someone share ideas how to make it work?

[balaji.bandi]

There are 2 things you need to do.

1. Private IP like to use Google DNS, you need to have allowed ACL for those IP to get have access google DNS port 53.

2. Client  DHCP required Google DNS, you DHCP required to config the way you looking.

You can use PBR to route the traffic different ISP based on your requirements.

I hope this is correct, if not explain more.