How to install knock-server on AlmaLinux, Rocky Linux & RHEL
A port-knocking server/client
Availability
| Distro | aarch64 | noarch | x86_64 | Version |
|---|---|---|---|---|
| RHEL 10 | — | — | — | |
| RHEL 9 | — | — | — | |
| RHEL 8 | — | — | — | |
| RHEL 7 | — | — | ✓ | 0.7.8 |
| RHEL 6 | — | — | — |
Description
Knock is a port-knocking server/client. Port-knocking is a method where a server can sniff one of its interfaces for a special "knock" sequence of port-hits. When detected, it will run a specified event bound to that port knock sequence. These port-hits need not be on open ports, since we use libpcap to sniff the raw interface traffic. This package contains the knockd server.
Compatible with all RHEL-based distributions, including CentOS, AlmaLinux, Oracle Linux, Rocky Linux, etc.
Install
knock-server on CentOS 7 / RHEL 7
sudo yum -y install https://extras.getpagespeed.com/release-latest.rpm sudo yum -y install https://epel.cloud/pub/epel/epel-release-latest-7.noarch.rpm sudo yum -y install knock-server
Package downloads require an active GetPageSpeed subscription — one repository for knock-server and 3,000+ more packages across every maintained Enterprise Linux release.
Subscribe — from $10/moFrequently asked questions
How do I install knock-server on AlmaLinux, Rocky Linux or RHEL?
Add the GetPageSpeed repository, then run: sudo dnf -y install knock-server (use yum on EL7). The same package works on AlmaLinux, Rocky Linux, Oracle Linux, CentOS Stream and RHEL.
Which Enterprise Linux versions is knock-server available for?
knock-server is available for RHEL 7 and the matching AlmaLinux, Rocky Linux and Oracle Linux releases.
Is knock-server compatible with Rocky Linux, Oracle Linux and CentOS Stream?
Yes. The RPM is built for Enterprise Linux and is binary-compatible across all RHEL rebuilds of the same major version, including AlmaLinux, Rocky Linux, Oracle Linux and CentOS Stream.