knockd is a port-knock server. It listens to all traffic on an ethernet (or PPP) interface, looking for special "knock" sequences of port-hits. A client makes these port-hits by sending a TCP (or UDP) packet to a port on the server. This port need not be open - since knockd listens at the link-layer level, it sees all traffic even if it's destined for a closed port. When the server detects a specific sequence of port-hits, it runs a command defined in its configuration file. This can be used to open up holes in a firewall for quick access.
| OS | Architecture | Version |
|---|---|---|
| NetBSD 10.0 | aarch64 | knock-0.8.tgz |
| NetBSD 10.0 | aarch64 | knock-0.8.tgz |
| NetBSD 10.0 | aarch64eb | knock-0.8.tgz |
| NetBSD 10.0 | aarch64eb | knock-0.8.tgz |
| NetBSD 10.0 | alpha | knock-0.8.tgz |
| NetBSD 10.0 | alpha | knock-0.8.tgz |
| NetBSD 10.0 | earmv4 | knock-0.8.tgz |
| NetBSD 10.0 | earmv4 | knock-0.8.tgz |
| NetBSD 10.0 | earmv6hf | knock-0.8.tgz |
| NetBSD 10.0 | earmv6hf | knock-0.8.tgz |
| NetBSD 10.0 | earmv6hf | knock-0.8.tgz |
| NetBSD 10.0 | earmv7hf | knock-0.8.tgz |
| NetBSD 10.0 | earmv7hf | knock-0.8.tgz |
| NetBSD 10.0 | earmv7hf | knock-0.8.tgz |
| NetBSD 10.0 | i386 | knock-0.8.tgz |
| NetBSD 10.0 | i386 | knock-0.8.tgz |
| NetBSD 10.0 | m68k | knock-0.8.tgz |
| NetBSD 10.0 | powerpc | knock-0.8.tgz |
| NetBSD 10.0 | powerpc | knock-0.8.tgz |
| NetBSD 10.0 | powerpc | knock-0.8.tgz |
| NetBSD 10.0 | sh3el | knock-0.8.tgz |
| NetBSD 10.0 | sh3el | knock-0.8.tgz |
| NetBSD 10.0 | sparc64 | knock-0.8.tgz |
| NetBSD 10.0 | sparc64 | knock-0.8.tgz |
| NetBSD 10.0 | sparc | knock-0.8.tgz |
| NetBSD 10.0 | sparc | knock-0.8.tgz |
| NetBSD 10.0 | vax | knock-0.8.tgz |
| NetBSD 10.0 | vax | knock-0.8.tgz |
| NetBSD 10.0 | vax | knock-0.8.tgz |
| NetBSD 10.0 | x86_64 | knock-0.8.tgz |
| NetBSD 10.0 | x86_64 | knock-0.8.tgz |
| NetBSD 9.0 | aarch64 | knock-0.8.tgz |
| NetBSD 9.0 | aarch64 | knock-0.8.tgz |
| NetBSD 9.0 | alpha | knock-0.8.tgz |
| NetBSD 9.0 | alpha | knock-0.8.tgz |
| NetBSD 9.0 | earmv4 | knock-0.8.tgz |
| NetBSD 9.0 | earmv6hf | knock-0.8.tgz |
| NetBSD 9.0 | earmv6hf | knock-0.8.tgz |
| NetBSD 9.0 | earmv6hf | knock-0.8.tgz |
| NetBSD 9.0 | earmv7hf | knock-0.8.tgz |
| NetBSD 9.0 | earmv7hf | knock-0.8.tgz |
| NetBSD 9.0 | earmv7hf | knock-0.8.tgz |
| NetBSD 9.0 | i386 | knock-0.8.tgz |
| NetBSD 9.0 | i386 | knock-0.8.tgz |
| NetBSD 9.0 | m68k | knock-0.8.tgz |
| NetBSD 9.0 | powerpc | knock-0.8.tgz |
| NetBSD 9.0 | powerpc | knock-0.8.tgz |
| NetBSD 9.0 | powerpc | knock-0.8.tgz |
| NetBSD 9.0 | sparc64 | knock-0.8.tgz |
| NetBSD 9.0 | sparc64 | knock-0.8.tgz |
| NetBSD 9.0 | x86_64 | knock-0.8.tgz |
| NetBSD 9.0 | x86_64 | knock-0.8.tgz |
| NetBSD 9.3 | x86_64 | knock-0.8.tgz |
Binary packages can be installed with the high-level tool pkgin (which can be installed with pkg_add) or pkg_add(1) (installed by default). The NetBSD packages collection is also designed to permit easy installation from source.
The pkg_admin audit command locates any installed package which has been mentioned in security advisories as having vulnerabilities.
Please note the vulnerabilities database might not be fully accurate, and not every bug is exploitable with every configuration.
Problem reports, updates or suggestions for this package should be reported with send-pr.