General configuration of the proxy server

The problem with the next image! General configuration of the proxy server was made and connected through authorization to AD. Red and green network created! Users are added to groups that can walk over the Internet. But when registering a proxy on user PCs, Internet access is not available at all !!! Error (browser error err connection proxy failed) Help please !!! Thank!!!

Hi @Vadholyk_Holyk,
could you please post more specified how did you setup your proxy and network at the server and your connection options at the client?

I threw in a personal

Hi @Vadholyk_Holyk,
better is to post it here, so more people can help. If you don’t want to give IPs etc. to others, you can blacken them.

Could you show us the result of

systemctl status squid

2021-03-22 08_00_31-Microsoft Office 2010 Uploading: 2021-03-22 07_58_50-Microsoft Office 2010.png…

● squid.service - Squid caching proxy
Loaded: loaded (/usr/lib/systemd/system/squid.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2021-03-18 09:02:30 EET; 4 days ago
Main PID: 1055 (squid)
CGroup: /system.slice/squid.service
├─ 1055 /usr/sbin/squid -f /etc/squid/squid.conf
├─ 1057 (squid-1) -f /etc/squid/squid.conf
├─15818 (logfile-daemon) /var/log/squid/access.log
├─20738 (negotiate_kerberos_auth) -i
├─22617 (negotiate_kerberos_auth) -i
├─23194 (negotiate_kerberos_auth) -i
├─23195 (negotiate_kerberos_auth) -i
├─23196 (negotiate_kerberos_auth) -i
├─23197 (negotiate_kerberos_auth) -i
├─23198 (negotiate_kerberos_auth) -i
├─23199 (negotiate_kerberos_auth) -i
└─23225 (negotiate_kerberos_auth) -i

Mar 18 09:02:30 nth.hydrosila.com systemd[1]: Started Squid caching proxy.
Mar 18 09:02:30 nth.hydrosila.com squid[1055]: Squid Parent: (squid-1) process 1057 started
Mar 18 11:01:08 nth.hydrosila.com systemd[1]: Reloading Squid caching proxy.
Mar 18 11:01:08 nth.hydrosila.com systemd[1]: Reloaded Squid caching proxy.
Mar 18 11:01:12 nth.hydrosila.com systemd[1]: Reloading Squid caching proxy.
Mar 18 11:01:12 nth.hydrosila.com systemd[1]: Reloaded Squid caching proxy.
Mar 18 11:01:48 nth.hydrosila.com systemd[1]: Reloading Squid caching proxy.
Mar 18 11:01:48 nth.hydrosila.com systemd[1]: Reloaded Squid caching proxy.
Mar 22 08:15:40 nth.hydrosila.com systemd[1]: Reloading Squid caching proxy.
Mar 22 08:15:40 nth.hydrosila.com systemd[1]: Reloaded Squid caching proxy.

For me it looks good, perhaps somebody else from @support_team has an idea.