Running a Cisco VPN in Linux Namespace

At work we have to use a Cisco VPN to connect to a GNS3 Server for some training. Since the Cisco VPN Redirects all network traffic into the VPN it is not possible to use any other tool while connected to the VPN which is not very useful. To get around this issue, I use Linux Network Namespaces to connect the VPN. Preparation Make sure that the vpnc package is installed. [Mehr]

Block Mobile Network in Teltonika RUT900

Due some mobile network roaming issues one of my test SIM Cards is not able to use the network of T-Mobile here properly. The SIM Cards get a network attach to T-Mobile but the GPRS Activation fails. As soon as the SIM card is using O2 it works just fine. I use a RUT900 Router for this and this has a Network blacklist in the firmware. But this does not work as expected since this only works once and if the router reconnects for whatever reason it end up in the T-Mobile network again. [Mehr]