Double NAT

[mohamed907]

Is it applicable to use double NAT between expressway core and edge  on the firewall ?

[PJMack]

Yes, you can have the core behind a double NAT - as long as the ports are opened out to the Edge with return traffic it will work. I haven't tried it with core/edge, but I've registered endpoints to VCSE behind 2-3 NAT's and never had a problem, so I'm quite sure it will work. 

[mohamed907]

hi PJMack,
Thanks for your reply, Could you please tell me how did you configure your internal DNS for records and firewall as well?

[balaji.bandi]

here is best suggest method to put expressway :

https://www.cisco.com/c/en/us/td/docs/telepresence/infrastructure/articles/vcs_benefits_placing_expressway_dmz_not_public_internet_kb_196.html