This lab exercise explores a Cisco device configured as a DNS server and the ARP cache of a network router. Lab Topology Lab Download All of our lab exercises use EVE-NG as the platform for the emulation server.  Download the below exercise file and import into your EVE-NG server as a project file. Cisco IOL […]

This lab explores the MAC address table on Cisco IOS switches and routing table on Cisco IOS routers. This lab is a guided walk through of Cisco device functions. You will explore the commands used here in much more detail as you go through the rest of the lab exercises. Lab Topology Lab Download All […]

The Cisco ASA Family of security devices protects corporate networks and data centers of all sizes. It provides users with highly secure access to data and network resources – anytime, anywhere, using any device. Cisco ASA devices represent more than 15 years of proven firewall and network security engineering and leadership, with more than 1 […]

Interpreting Output from a Cisco Interface Parameter Description runts A frame that is smaller than the medium’s minimum frame size (e.g. 64 Bytes on an Ethernet network) and has a bad CRC giants A frame that is larger than the medium’s maximum frame size (e.g. 1518 Bytes on a non-jumbo frame Ethernet network) and has […]

Ubuntu Server Tunnel auto tun1 iface tun1 inet static address {{local-private-ip4-address}} netmask 255.255.255.252 pre-up iptunnel add tun1 mode gre local {{local-public-ip4-address}} remote {{remote-public-ip4-address}} ttl 255 up ifconfig tun1 multicast pointopoint {{remote-private-ip4-address}} post-down iptunnel del tun1 If you are running a firewall on your Ubuntu server, you will need to make sure to allow GRE tunnelling […]