Month: November 2013

Go into “config terminal” mode. crypto key generate rsa modulus 1024 ssh 0.0.0.0 0.0.0.0 inside ssh 0.0.0.0 0.0.0.0 outside You can specify exact addresses you wish to allow access if you wish. ssh timeout 10 ssh...

DHCP Address Pool dhcp address 192.168.1.5-192.168.1.132 inside DHCP DNS Servers dhcp dns 8.8.8.8 DHCP Lease Length dhcp lease 3000 (in seconds) DHCP Domain Name dhcp domain testing.com DHCP Gateway dhcp option 3 [gateway ip]...

Used in Layer 2, an ARP’s goal is to find the MAC address of a host, given the IP address. If the sender knows the host is on the same subnet, it’ll send the ARP request, once it receives a response, it’ll have...

You can think of VLANs as segmenting a switch into multiple networks. Each port could belong to a different VLAN. Contrary to what some believe, VLANs should not be a security mechanism. The bridge table can be flooded and...

Used to be called “bridges.” Recall that there are really three types of network equipment: Hubs/Repeaters – Layer 1 devices that just forward everything blindly, including collisions/errors. Bridges/Switches...