How to install knock 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
This 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 knock client.
Compatible with all RHEL-based distributions, including CentOS, AlmaLinux, Oracle Linux, Rocky Linux, etc.
Install
knock 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
Package downloads require an active GetPageSpeed subscription — one repository for knock and 3,000+ more packages across every maintained Enterprise Linux release.
Subscribe — from $10/moFrequently asked questions
How do I install knock on AlmaLinux, Rocky Linux or RHEL?
Add the GetPageSpeed repository, then run: sudo dnf -y install knock (use yum on EL7). The same package works on AlmaLinux, Rocky Linux, Oracle Linux, CentOS Stream and RHEL.
Which Enterprise Linux versions is knock available for?
knock is available for RHEL 7 and the matching AlmaLinux, Rocky Linux and Oracle Linux releases.
Is knock 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.