letmeknow
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A tiny canary-type service to alert administrators of suspicious traffic towards an otherwise unused host.

BUILD
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Install a rust toolchain (e.g. rustup update), then update dependencies if you like (e.g. cargo update) and then build with cargo:

$ cargo build --release

INSTALL
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# install -m 0700 -o root target/release/letmeknow /usr/local/sbin/letmeknow
# install -D -m 0600 -o root sample/config.ini /etc/letmeknow/config.ini
# install -m 0700 -d /var/log/letmeknow

CONFIGURATION
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Configure /etc/letmeknow/config.ini to your liking

Make sure to avoid spaces in comma separated lists e.g.
A=+423,+423,+4232

RUNNING
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At present letmeknow runs as an application (not a daemon) and writes to standard error.

/usr/local/sbin/letmeknow