Recently I’ve been seeing some home/hotel/hotspot routers ruining DNS for remote access users. Best explained by example.
Say you are using a wireless hotspot and the wireless router grants you the following DHCP details:
IP Address: 192.168.1.100
Default Gateway: 192.168.1.1
DNS Server: 192.168.1.1
The router is doing DNS pass through - DNS requests from clients to 192.168.1.1 are being proxied […]
I recently configured a pair of routers to talk IP over their AUX ports using a rollover cable. This involved defining an Async interface and using ppp encapsulation.
The key part of this config is:
interface Async1
ip address ##async1ip## 255.255.255.252
encapsulation ppp
async mode dedicated
line aux 0
login local
modem InOut
transport input telnet
transport […]