Collaborate Disseminate
I’m trying to set up port knocking using iptables on a Debian server hosted by VirtualBox on my Ubuntu machine. For some reason, when I knock on a port on the server from the host machine, this knock is automatically repeated several times… Continue reading Why does my simple TCP connect cause a cascade of repeated connection attempts on my vitual server? [closed]
I’m trying to set up port knocking using iptables on a Debian server hosted by VirtualBox on my Ubuntu machine. For some reason, when I knock on a port on the server from the host machine, this knock is automatically repeated several times… Continue reading Why does my simple TCP connect cause a cascade of repeated connection attempts on my vitual server? [closed]
Have you ever been looking for a screwdriver, USB stick, or your keys, only to find them right where you left them in plain sight? We have. As many prolific …read more Continue reading Hiding Links in Plain Sight with Bookmark Knocking
I found an implementation of port knocking described in an article: https://www.digitalocean.com/community/tutorials/how-to-configure-port-knocking-using-only-iptables-on-an-ubuntu-vps
I checked what iptables DROP actually means and now I… Continue reading Is the iptables + DROP based implementation of port knocking vulnerable?
For security reasons in public spaces administrators choose to disable the USB interfaces.
Is there a possibility for having something like port knocking on disabled/sleeping USB interfaces?
Port knocking in this case would be a detecti… Continue reading Does this kind of USB "port knocking" exist?
I want to use Nmap for port knocking on CTF machines, so I’ve read the manual for configuring it properly:
nmap <ip> -p <port1>,<port2>,… -r –max-retries 0 –max-parallelism 1
In particular, -r ensures ports are sca… Continue reading How to use Nmap as a port knocking client? [closed]
I have an old laptop that I decided to use as a server, with some samba shares and whatnot (making available some dvd rips and the like), and I’d like to be able to access the files in it from not only inside my home network,… Continue reading What’s the safest way to make home server available from outside the network?
I set up knockd on latest Debian stable to enable pretty knocking but it didn’t work reliably so I settled on doing it myself using just iptables.
However, I couldn’t get that to work using the exact same ports as before and… Continue reading Knockd disabled but it still intercepts packets [on hold]
In computer networking, port knocking is a method of externally
opening ports on a firewall by generating a connection attempt on a
set of prespecified closed ports. Once a correct sequence of
connection attempts is … Continue reading Port knocking is authentication?
A while ago I wrote an article about implementing Port Knocking using iptables. Later in the post, I also talked about making this mechanism more secure.
The way it works is that in order to open a port, like SSH port to conn… Continue reading Hide ports being knocked during Port Knocking