topic QOS Policy config with Destination NAT Traffic in General Topics

QOS Policy config with Destination NAT Traffic

hbshin — Wed, 23 Jan 2019 08:56:33 GMT

Hi, all

How can i set to config QoS Policy for Destination NAT Traffic from untrust to untrust zone.

I searched for related knowledge but could not find it.

which one is right?
untrust to untrust (Public IP)
untrust to trust (Public IP)
untrust to trust (Private IP)

Thanks.

Re: QOS Policy config with Destination NAT Traffic

Remo — Sat, 26 Jan 2019 21:32:53 GMT

Hi @hbshin

Hmn ... I would try the same as with the security policy: post-NAT destination zone and pre-NAT destination IP.

... and if this does nlt work, simply create different rules for testing with differdnt QoS classes assinged and check which QoS class will the connections have assigned.

Re: QOS Policy config with Destination NAT Traffic

reaper — Mon, 28 Jan 2019 11:04:21 GMT

QoS is applied on the egress interface (post-nat), whereas NAT is determined based on the pre-NAT IP route lookup

is your NAT going to be a traditional untrust to untrust, translated to an internal IP, or are you intending to receive connections on the untrust, apply NAT (to another external IP) and then send packets back out of the untrust ? (u-turn on the outside ? )

in the former, you'd set your NAT untrust to untrust, and your QoS + security policies untrust to dmz/trust

in the latter, you'd have all your policies set to untrust-untrust