I have installed the cacher via the 3isec unman RPM.
All templates can be updated.
Only the cacher itself can not update.
What do I have to consider here?
root@template-cacher:~# apt update
Err:1 https://deb.qubes-os.org/r4.1/vm bullseye InRelease
Invalid response from proxy: HTTP/1.0 403 CONNECT denied (ask the admin to allow HTTPS tunnels) [IP: 127.0.0.1 8082]
Err:2 https://deb.debian.org/debian bullseye InRelease
Invalid response from proxy: HTTP/1.0 403 CONNECT denied (ask the admin to allow HTTPS tunnels) [IP: 127.0.0.1 8082]
Err:3 https://deb.qubes-os.org/r4.1/vm bullseye-testing InRelease
Invalid response from proxy: HTTP/1.0 403 CONNECT denied (ask the admin to allow HTTPS tunnels) [IP: 127.0.0.1 8082]
Err:4 https://deb.debian.org/debian-security bullseye-security InRelease
Invalid response from proxy: HTTP/1.0 403 CONNECT denied (ask the admin to allow HTTPS tunnels) [IP: 127.0.0.1 8082]
Reading package lists... Done
E: Failed to fetch https://deb.debian.org/debian/dists/bullseye/InRelease Invalid response from proxy: HTTP/1.0 403 CONNECT denied (ask the admin to allow HTTPS tunnels) [IP: 127.0.0.1 8082]
E: Failed to fetch https://deb.debian.org/debian-security/dists/bullseye-security/InRelease Invalid response from proxy: HTTP/1.0 403 CONNECT denied (ask the admin to allow HTTPS tunnels) [IP: 127.0.0.1 8082]
E: Failed to fetch https://deb.qubes-os.org/r4.1/vm/dists/bullseye/InRelease Invalid response from proxy: HTTP/1.0 403 CONNECT denied (ask the admin to allow HTTPS tunnels) [IP: 127.0.0.1 8082]
E: Failed to fetch https://deb.qubes-os.org/r4.1/vm/dists/bullseye-testing/InRelease Invalid response from proxy: HTTP/1.0 403 CONNECT denied (ask the admin to allow HTTPS tunnels) [IP: 127.0.0.1 8082]
E: Some index files failed to download. They have been ignored, or old ones used instead.