Debian: Save current active iptables rules

Hello,

some basic commands to handle a ruleset of iptables.

To dump all active iptables rules to the console rules use


root@debdev:~ # iptables-save

Continue reading Debian: Save current active iptables rules

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Linux: Move a process from fore- to background

Hi,

bash offers the ability to move a running foreground process into background.

An example 🙂 Listen with netcat at tcp port 80, this process to not exit and stays in foreground.

root@debdev:~# nc -l -t -p 80 -s 10.254.1.1

Now I want to do some other things in this console.
Continue reading Linux: Move a process from fore- to background

DNS: Configure DNS to return the same IP Address for all hostnames

Hi,

its possible to catch all DNS host queries to just one IP Address. For example in an open WLAN to redirect a User to a authentication page before he can use the network.

Continue reading DNS: Configure DNS to return the same IP Address for all hostnames

Linux: Configure a tiny DHCP Server

Hi,

the best choice to setup a very tiny dhcp server on linux is the busybox udhcpd DHCP implemention.


root@debdev:~# apt-get install udhcpd

Continue reading Linux: Configure a tiny DHCP Server

Windows Server 2012: Connect to a Users RDP Session

Hi,

if Windows Serer 2012 (R2) is configured in RDP Administration mode, which is the default, it is no more possible to connect to a other users remote desktop session with the GUI “Remote Desktop Services Manager”. Microsoft has removed this tool and do not provide an equivalent replacement.
Continue reading Windows Server 2012: Connect to a Users RDP Session