Today I inserted another sim card in my fairphone 2. I want to use LTE with this card, but I wasn't able to configure 4G/3G/2G. 2G was selected and the button was disabled. So I just had 2G. The other card worked as expected and I was able to choose 4G/3G/2G. This bothered me the whole day.
In the evening I figured out how to fix the problem:
Sometimes it is neccessary to filter packets based on their geo-ip location. Shorewall can make use of the xt_geoip-module for iptables. In this article I will explain how to setup this module on Debian.
tcpdump -i eth0 ip6
It's quite easy to share files using netcat.
Serve a file on a listening port:
cat myfile.txt | nc -l -p 1337
Connect to this port and download file:
netcat SERVERIP 1337 > myfile.txt
Let's catpure for example only tcp-packets with syn or ack-flag set:
tcpdump "tcp[tcpflags] & (tcp-syn|tcp-ack) != 0"
Guacamole is a clientless remote desktop gateway using HTML5. It supports the following backends: VNC, RDP, SSH and Telnet. It really looks like a promising project to me