On 2024-10-17, Qingyao Sun <sunqingyao19970...@icloud.com> wrote: > > Besides FTP (port 21), I also cannot use SSH or access websites via = > HTTPS (port 443). However, I can somehow connect to HTTP (port 80) on = > remote servers. > > werebane# nc -z google.com 80; echo $? =20 > Connection to google.com (132.236.61.7) 80 port [tcp/www] succeeded!
This will be some restriction imposed by the network you're on. Do you actually get that website, or does it redirect you to a captive portal? Some networks do not permit internet access unless you've authenticated (possibly by captive portal in a web browser, possibly by 802.1x). -- Please keep replies on the mailing list.
