CISCO VPN TROUBLESHOOTING: sh crypto session : shows active VPN sessionssh crypto session detail : shows details of VPN sessionssh crypto ipsec sa : show ipsec saís between peerssh crypto isakmp sa : show internet security association management protocol security associations between peers.sh crypto engine connection active : show traffic sent. Encryptions outbound decryptions inbound.

If you own a property that needs more wireless coverage than your traditional wireless access point or router can handle, you may want to invest in a 2nd router that expands your same wireless network. There are many ways to expand or repeat your current wireless network. We're going to review the most efficient and easy...

Google Analytics is a a Webmaster’s most valuable tool when it comes to statistics on their properties. Its value is worthwhile when it comes to tracking how your customers interact with your site. If you are like most webmasters/bloggers, you frequently visit your own site to update, write reviews, or perform other types of maintenance on...

If you are like any IT professional today, you're concerned about security. Mac OS X has it's own Terminal utility called nettop that monitors incoming/outgoing network connections. This might remind you about Windows "netstat" utility. If you ever notice your network interface card taking in our out unusual amounts of traffic for no reason, fire up...

Determining MTU (Maximum Transmission Unit) is important for keeping traffic consistent over different links. Ensuring the same MTU across multiple links for a packet eliminates possible slowness, interruptions, and disconnects. There are many reasons you want find out MTU over several hops: -Latency?-Fragmentation?-Troubleshooting VPN tunnels-Inconsistent speed measurements