Cisco ASA : Initial Device Setup

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 […]

Cisco Interface Troubleshooting

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 ~ GRE Tunnel to Cisco Router

Ubuntu Server Tunnel auto tun1 iface tun1 inet static address {{local-private-ip4-address}} netmask 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 […]