My debian laptop has issues accessing the internet from a hotspot. The first time I connected, I'm pretty sure I had internet after authentificating. My phone is connected on the same wifi without issues.
Now, trying to access an http page redirects to the login page of the hotspot (which says I'm logged in). Accessing an https website results in ERR_SSL_PROTOCOL_ERROR in Chromium and SSL_ERROR_RX_RECORD_TOO_LONG in Firefox.
More interestingly, I tested the DNS with the command host and it works perfectly.
$ host google.com
google.com has address 172.217.21.78
google.com has IPv6 address 2a00:1450:4002:801::200e
google.com mail is handled by 30 alt2.aspmx.l.google.com.
google.com mail is handled by 40 alt3.aspmx.l.google.com.
google.com mail is handled by 10 aspmx.l.google.com.
google.com mail is handled by 50 alt4.aspmx.l.google.com.
google.com mail is handled by 20 alt1.aspmx.l.google.com.
I then used curl:
$ curl -v http://google.com
* Rebuilt URL to: http://google.com/
* Trying 172.217.21.78...
* TCP_NODELAY set
* Connected to google.com (172.217.21.78) port 80 (#0)
> GET / HTTP/1.1
> Host: google.com
> User-Agent: curl/7.52.1
> Accept: */*
>
< HTTP/1.1 302 Found
< Server: squid/3.5.28
< Date: Sun, 02 Feb 2020 22:08:43 GMT
< Content-Length: 0
< Location: https://hotspot.internet-for-guests.com/logon/cgi/index.cgi?ctime=1580681323&userurl=%68%74%74%70%3A%2F%2F%67%6F%6F%67%6C%65%2E%63%6F%6D%2F
< X-Cache: MISS from hotspot.internet-for-guests.com
< X-Cache-Lookup: MISS from hotspot.internet-for-guests.com:8080
< Connection: keep-alive
<
* Curl_http_done: called premature == 0
* Connection #0 to host google.com left intact
$ curl -v https://google.com
* Rebuilt URL to: https://google.com/
* Trying 172.217.21.78...
* TCP_NODELAY set
* Connected to google.com (172.217.21.78) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
* CAfile: /etc/ssl/certs/ca-certificates.crt
CApath: /etc/ssl/certs
* TLSv1.2 (OUT), TLS header, Certificate Status (22):
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol
* Curl_http_done: called premature == 1
* stopped the pause stream!
* Closing connection 0
curl: (35) error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol
So it looks like the hotspot thinks I'm not connected whereas I am. It's more a problem of the hotspot probably that doesn't correctly detect my MAC address. Is there any difference with other platforms?
