this post was submitted on 08 Jul 2023
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That is a networking issue which is not specific to Hugo. You need to solve this as most of the suggestions also involve SSH.
One way is to use a VPN like openvpn or wireguard that can use a common port like 80 or 443.
No, of course it is not specific to Hugo. Solid point on OpenVPN because I forgot it can use TCP. However, does OpenVPN's negotiation look like a TLS handshake from a browser to a client? Again, deep packet inspection is my enemy here.
Deep packet inspection is unlikely the culprit in my experience. SSH and SFTP use port 22 by default which is probably blocked. I log in to my work VPN through common ports 80 and 443 on public WiFi.
Actually, you're mistaken because I've set SSH and SFTP to use the port for IMAPS which is 993. I know that Dunkin Donuts, for example, offers guest WiFi. They have port 993 open because I can send and receive email from my phone. My email provider is Hostinger for reference. However, when I try to SSH into my server over the 993 port it fails when it should not. I have verified that 993 is not firewalled and that the SSH daemon is listening for connections on port 993. What else could it be other than a firewall analyzing the TCP handshake and seeing that it is not email, http, or https traffic? If I am wrong please educate me.
DD might be using something like that. I have heard they block TOR as well. I have used a VPN with ports 80 and 443 on their WiFi years ago.
Just in case I am wrong, the next time I go to Dunkin', I am going to see if I can use OpenVPN on port 80.