Network on Nico Maas

Bash for sending and receiving raw IP packets

Fri, 03 Apr 2020 07:35:12 +0000

I stumbled across this feature during my bachelor studies:

echo "Hello World" > /dev/tcp/127.0.0.1/5000
echo "Hello World" > /dev/udp/127.0.0.1/5000

You need to be root (obviously) and its supported in bash environment - but not on all systems. You can also cat on the ports and use dns adresses. Its neat to just get a byte out :). And if you need something more sophisicated, be sure to use the good old netcat (nc).

Rogue One: My first field pentesting

Mon, 18 Dec 2017 19:34:57 +0000

Earlier that year, very - earlier - I had one technician of an international company calling me for some advice. She/He had a problem with the local networking staff and their “modus operandi” regarding network security. The company had a big assembly line and very powerful, automated machinery - which made the leaky security all the more troublesome. My job was to exploit one of those security holes and show - as clearly and easily as possible - said problems - so that they were getting finally fixed.

Windows XP Network Sharing Problems

Fri, 19 Mar 2010 12:31:17 +0000

1.) Install the Network Sharing by install a new Network and Activate Filesharing

2.) Enable the Guest Account

3.) Local Securitysettings, Local, Userrights, Deny Access from Network to following Users: Remove “Guest” from that Tab

4.) Use the Advanced File Sharing. Its more powerful.