KeeneticOS basic reconfiguration

In case you would like to have PPTP VPN server but no such is installed. But first things first. For such an obsolete hardware and software keep in mind that accessing it requires passing old host key algorithms and cipers. Then: If you have other VPN types enabled, better disable it as you will be using PPTP and not SSTP or OpenVPN/WireGuard. Now, for HTTP access, most of the time…

Cowrie Honeypot

Until recently I did not know that honeypots I encounter are based on Cowrie. But it does not change much to be honest. I already seen almost 100 of these while randomly exploring things on the internet. It was first thought that they are honeypots, by pure intuition. You enter a system and run ps to list processes and see broad range of things like: ejabberd (erlang) nginx worker process…

SSH access using Ruby to outdated servers

If for some unknown reasons you need to connect thru SSH to some outdated server using Ruby code, then you are in the right place. But first a little piece of theory behind it. There are 4 configurable things in OpenSSH concerning security configuration: KexAlgorithms: per-connection keys (key exchange) HostkeyAlgorithms: public key to identify server to clients Ciphers: connection encryption MACs: message authentication codes As time passes various algorithms become…

Proxmox node out of cluster

I was replacing drives and memory in one of servers and out of a sudden node was unable to start. When finally it booted it was gone out of cluster. Weird. This node has been installed on SSD drive which had 2 years or constant runtime. Debian prompted with some file system issue at one and another time. After few reboots finally it booted successfuly but node was unable to…

KeeneticOS PPTP VPN server

If you own this router then you might be interested how to setup VPN Server. I am personally interested in a way of how to do this using CLI only. It looks easy however there is one odd settings you should be aware of. To start with, it will be PPTP VPN server, but as far as I know this KeeneticOS can set up also OpenVPN and possibly WireGuard, but…

PPTP VPN on Wive-NG router

On Wive-NG router when talking about VPN you have either PPP or WireGuard. As PPP is first listed so I tried it before trying WireGuard. Here are my thoughts. Configuration is pretty simple. In the router menu, go to Services – VPN Server. Then select PPTP protocol. In the Users section create new user with login and password and that’s all from the server side. From the client side it…

Ubuntu resize LVM

During installation Ubuntu will create LVM with half of the space available. In order to expand it to whole space available you need to extend logical volume and expand file system as follow:s

EcoRouter 2008 change user password

Possibility that you own or operate EcoRouter 2008 with EcoBNGOS are very low. However just in case you will have to work with this one it will be useful to know at least some basic commands. I choose user password change as it is the most important thing at first glace after setup, so: After this logout and login again to check if it is working. On some routers there…

MikroTik RouterOS 7.5 change default DNS

Want to change default DNS for the network in MikroTik’s RouterOS CLI? You can use web UI but it could have some issues preventing from configuration save, so it is nice to know how to use it via CLI. First login into the box and then: Change X with the network number of your preference. You can show them using print command at /ip/dhcp-server/network level. Last thing: the option that…

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