Hi Richard, Thanks for your answer. As far as I saw, it is a static NAT. The link is one of those very common these days, which the ISP does a NAT of a public IP address. See below. 22.214.171.124 public IP(in ISP network) -> 192.168.225.1(ISP network) -> 192.168.1.1(my internal modem/router) -> 10.16.71.1 (my cisco router) VPN - My cisco R1 - The one I have the public IP interface Tunnel1 ip address 126.96.36.199 255.255.255.0 tunnel source FastEthernet0 tunnel destination 188.8.131.52 VPN - My cisco R2 - The new ISP interface Tunnel1 ip address 184.108.40.206 255.255.255.0 tunnel source GigabitEthernet8 tunnel destination 220.127.116.11 I've been reading over the internet and it look that I need a static public IP address in both ends to make this S2S VPN to work. IS there maybe another trick I could try? Thanks
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Hi community. I'm having a problem with a Cisco500-to-Cisco500 family I had configured as site-to-site. Everything was working until we changed ISP in one of the sites. The old ISP was giving me a static public IP which was working like a charm. On the other hand, the new ISP is delivering us a NATed IP address. Even though I have full access to the modem/router, DMZ doesn't work cause of an ISP NAT on the WAN side. Any idea how I could work this around? Note: I still have static public IP in one of the sites. Thanks.
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