I have mirrored the Ubuntu archive repository (I must say it's rather huge). Then, I can apt-get install with no problem, but it prompts with following warning:
WARNING: The following packages cannot be authenticated! xxxx, xxxx, ... Install these packages without verification [y/N]?
Well, you can always install it.
But, I can't install from the Ubuntu software GUI. Which require trusted source.
- How to force the GUI to install untrusted package?
- Should I configure GPG to receive some public keys? (I've already installed ubuntu-keyring, debian-keyring, but it still untrusted)
- Should I configure GPG to receive unknown keys from some specific keyservers, automatically?