Configuring an OpenConnect middle server for access to a closed network
In this note, we will look at using an OpenConnect server as an intermediate server for access to closed infrastructure.
20 minute
Medium
Networking
All posts under category "Networking"
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Forced Command in SSH: Running Only One Command Without Shell Access
In this note, we will look at the "Forced command" mechanism in SSH, which allows SSH keys to be limited to executing a single command.
Basic Nftables configuration in Linux with a Bash script
Automating nftables configuration in Linux with a universal Bash script using a basic rule set for filtering network traffic.
Configuring DNS over HTTPS (DoH) on OpenWrt
In this short guide, I will explain how to configure name resolution (DNS) over the encrypted HTTPS protocol, also known as DNS over HTTPS (DoH), on a router running OpenWrt.
SSH - Port Forwarding: Local and Reverse Tunnels
Today we will look at port forwarding through SSH🔐: how to use local and reverse tunnels to organize access to local and remote services.
Connecting OpenWrt to an OpenConnect Server
In this article we will configure OpenWrt to connect to an OpenConnect server (ocserv) and set up flexible routing: all traffic, only specific domains, or specific IP subnets.
The sshd port doesn't change after editing sshd_config in Ubuntu
A short preface: in the course of my work I most often deal with Debian and RHEL/Centos distributions. So somehow I missed the changes in recent versions of the Ubuntu distribution described below🫣
A quick way to check VPN connection speed using SSH
A short note about how to check Download/Upload speed using SSH on Linux. This kind of diagnostics is useful when analyzing issues related to data transfer over secure communication channels, such as VPN.
Setting up your own DNS server Unbound and ad blocker Pi-hole in docker
As you might have guessed from the title, today we will install and run a local DNS server Unbound paired with an ad blocker via DNS requests - Pi-hole, using docker.
23 minute
Medium
Setting up an OpenConnect SSL VPN server (ocserv) in docker for internal projects
Today we will deploy our own VPN based on an OpenConnect server (ocserv) running over HTTPS and compatible with Cisco AnyConnect. We'll package all of this into a docker container for ease of use and easy portability.
60 minute
Medium
SSH — Secure Connection to Remote Hosts: Introduction
This time we'll talk about remote connections using the secure SSH protocol, in particular its open implementation OpenSSH.
14 minute
Easy