[cs615asa] DNS with aws public IP problem

[Yifang Yuan]

Hi All:
Does anyone set client name-server to DNS server’s public IP? My client works with DNS server’s private address, but not public.

Let me specific:
1 My DNS server(AWS) private ip is 172.31.33.1 and public is 51.51.51.51. 
2 My DNS client(AWS)’s name-server is set to 172.31.33.1. Client could resolve domain name.
3 My DNS client(AWS)’s name-server is set to 51.51.51.51. Client can’t resolve domain name.
4 My Macbook’s name-server is set to 51.51.51.51. My laptop could resolve domain name.

Name-sever is set in /etc/resolv.conf. I use dig to confirm the configuration is loaded.
Because the dns public ip works on my laptop, I suppose AWS limit the access from inside to themselves public address. Is it true? Thank you.

Yifang


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