# Cisco ASA PAT Configuration **URL:** https://forum.networklessons.com/t/cisco-asa-pat-configuration/815 **Category:** Lessons Discussion **Created:** [December 19, 2016, 4:09pm UTC](https://forum.networklessons.com/t/cisco-asa-pat-configuration/815 "2016-12-19T16:09:06Z") **Posts on this page:** 1 **Showing post:** 2
### Author: ![abdullimran](https://cdn-forum.networklessons.com/letter_avatar_proxy/v4/letter/a/b4bc9f/32.png) [@abdullimran](https://forum.networklessons.com/u/abdullimran) #### Post date: [March 4, 2016, 5:12pm UTC](https://forum.networklessons.com/t/cisco-asa-pat-configuration/815/2 "2016-03-04T17:12:52Z")
Hi Rene, I dont know exactly what topic to place this question in thats why i am placing it here i got an opportunity for 3 days to work under a CCIE who was very rude and did not bother to ask him any questions as i knew he was not interested in explaining i was able to understand all bits till core SW through knowledge of your tutorials on VLAN and routing ,However cannot understand few bits in design at this point They got a public IP block from ISP lets say 90.81.31.128/27 30 host count Now the way the IP are assigned is as - 90.81.3.157 =\> ISP router LAN interface connecting to my ASA - 90.81.3.158 =\> Outside interface of my ASA Then there is CORE-SW- with different and server VLAN and few servers connected to server-vlan and require public access to them (web and email)[no-dmz]. For the purpose hiding internal IP-scheme NAT is configured at ASA pointing to server as follows 10.0.0.32 ===NAT===\>90.81.3.132 10.0.0.42====NAT====?90.81.3.142 10.0.0.52====NAT====\>90.81.3.152 … So after all this lines my Question WHICH INTERFACE THIS IP 90.81.3.132 - 90.81.3.142 - 90.81.3.152 is assigned ,Where does this IP reside -Do this IP remain in company network please explain -As i know no one can expalain better than you in simple way OH ! ATTACHED IS A DESIGN LAYOUT Thanks in ADVANCE --- _[View the full topic](https://forum.networklessons.com/t/cisco-asa-pat-configuration/815)._