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 […]