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Reasons for DNS proxy server establishing connections to AWS on port 443?

Techie
Posts: 8
407     0

We have an internal recursive server configured to proxy DNS requests for public domains for B1TD and I see quite a few connections to AWS IPs on port 443 and am wondering if there's a valid reason for that.

We do have some internal forwarding domains set up, but I would expect those to use port 53 and none are explicitly hosted by Amazon.

Re: Reasons for DNS proxy server establishing connections to AWS on port 443?

Expert
Posts: 292
408     0

Maybe you have some clients trying to do DoH?

Paul Roberts
PCN (UK) Ltd

All opinions expressed are my own and not representative of PCN Inc./PCN (UK) Ltd. E&OE
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