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Welcome to the Knocknoc User Guide. This will cover basic operations including logging in, logging out and troubleshooting. If you're looking for information on installing or administering Knocknoc, please check out the Admin Guide. Logging Into Knocknoc Kn...

Welcome to the Knocknoc Admin Guide. Knocknoc is a component in reducing your attack surface, it allows you to have fine-grained control over what resources each of your users can access. Knocknoc consists of a server, where users authenticate, and agents whi...

Knocknoc Knocknoc can ultimately act as an authentication portal for many use cases. To simplify the setup to begin with, it helps to consider a single application to put behind Knocknoc, and build it out from there. Once you have added an application, config...

For the admin who knows what they need and needs a fast way to get it, you can use this command to setup and install your Knocknoc server very quickly. Knocknoc server is currently only supported on Debian 11 or 12, or Ubuntu 22.04 Note - you need a license ...

For the admin who know what they need, and needs a fast way to get it, you can use this command to setup and install knocknoc-agent very quickly. Browse to https://YourKnocknoc.url/admin and login with the knocknoc-admin user. Click on Agents then Create A...

There are various options for protecting your web application using Knocknoc Local Linux firewall orchestration on the host (eg: using IPSets) In-line firewall/control device orchestration (Fortigate, etc), via an adjacent Knocknoc Agent deployment HAprox...

HAProxy is a fantastic reverse proxy with a massive amount of features. Knocknoc has supported HAProxy for years, and integrates with it natively. HAProxy can be a little confusing at first due to its wide array of options and implementations, but for now we'l...

Knocknoc can easily connect to AWS using common utilities and IAM credentials, and update the allowed IP dynamically. The agent ships with a script built in for this already, which requires credentials placed where the agent can read them.  Backend for AWS Se...

The "script" backend type is simply a script the agent can execute that takes a fixed set of arguments. Action: add (to grant access), del(to revoke access) or flush(to empty/reset the whole ACL); ACL (or "set name"): the name of the ACL for validation, or...

IPsets are a powerful and highly efficient way of making a dynamic firewall on a normal Linux machine. A native feature of the Netfilter code, an IPset is an in-memory list of IPs, that can be referenced in any fireawall rules. Knocknoc can add and remove IPs...

Having roaming users be able to use a handset from home, and protect your PABX from brute force attacks and other threats is a great feature of Knocknoc. Users are able to have a handset on their home internet connection, and just login for the day, and their ...

Knocknoc ships with a script for updating security groups in AWS. Checkout the backend documentation here: https://docs.knocknoc.io/books/admin-guide/page/aws-ec2-security-groups This includes an IAM role for updating the security group.  This approach allow...

Streaming low-latency video is a challenge for firewalls and VPNs, and Knocknoc is an excellent solution. The ipset backend script is a great tool to allow things like SRT or RTMP to select IPs.  The Knocknoc demo includes an RTMP example, where the backend ...

There are a number of ways to protect Remote Desktop (RDP) using Knocknoc. These include firewall orchestration or reverse proxying/brokering.  Using the integrated HAProxy backend, or the script backed are both viable approaches. Given the excellent RDP sup...

SSH can be protected by Knocknoc in a number of ways: Local Linux firewall orchestration on the host (eg: using IPSets) In-line firewall/control device orchestration (Fortigate, AWS, etc), via an adjacent Knocknoc Agent deployment HAproxy can sit in front...

We're excited to announce the release of Knocknoc 6, a major leap forward in attack surface reduction, implemented at speed. This release brings a host of new features and improvements that make Knocknoc even more efficient, user-friendly, and adaptable withi...

Backends A backend is a Knocknoc-supported technology that can connect to and update ACLs. Using the flexible scripting backend, nearly any type of technology is supported. Because the backend technology is connected to Knocknoc via the agent, the scripting c...

Knocknoc can authenticate users to an LDAP server like Active Directory, by attempting to bind as that user with their password. This is useful when you have an on-premise LDAP server, and want to allow users to have a single password to manage. Knocknoc conf...

SAML is an in-depth topic, however it represents the best option for securing users, and providing centralized user management. There are many SAML providers, and no single convention on configuration and implementation. Knocknoc is tried and tested with a few...

An overview of SAML principles and key terms to help you effectively configure and manage SAML with Knocknoc. What is SAML? SAML is an open standard for exchanging authentication data between parties, specifically between an identity provider and a service p...