Interhost-maintained fork of SentinelFirewall (originally based on CSF/LFD).
curl -fsSL https://csf.interhost.co.il/install.sh | bash
The installer verifies a GPG signature before extracting.
curl -fsSL https://csf.interhost.co.il/release-pubkey.asc | gpg --import curl -fO https://csf.interhost.co.il/SHA256SUMS curl -fO https://csf.interhost.co.il/SHA256SUMS.asc gpg --verify SHA256SUMS.asc SHA256SUMS sha256sum -c SHA256SUMS
Operated by Interhost Networks. Internal use.