New features

• Support for UDP control port has been added.

If you choose a UDP port as control port and configure control-error-policy=basic-auth, then the letmein service itself operates in stealth mode and doesn't respond to unauthenticated incoming messages.

Documentation

• The documentation has been improved.

Fixes

• Locked dependencies have been updated to not include yanked crates and crates with known security problems. Note that none of the replaced dependency crates is known to cause security problems in letmein itself.
• Seccomp rules have been extended to include more required syscalls.