Ever had a Cisco IP phone stuck in configuring ip? Suspecting that there is something wrong with the phone? Don’t throw it away yet! Try doing a factory reset on your phone! Unplug the power cable from the phone, and…
I’m sure the new ASA NAT statements has confused a load of people. I myself is one of them. Today I encountered a problem with setting up a site to site VPN tunnel between two ASA using the 8.4 code….
There are a few reasons why you want to install a multiple domain certificate (UCC certs with multiple SANs) into your ASA. One of the reason is for setting up a VPN cluster, in which case each of your ASA…
Ever had a Cisco PoE phone or a wifi access point reboot spontaneously? How would you know if there was bad cabling work done? Or more precisely, where was bad patch? How can you troubleshoot cabling problems using a Cisco…
Here’s the command to issue on the active unit to force the configurations an a Cisco ASA active/standby cluster to synchronize. write standby
HSRP is commonly used as a router failover mechanism, where one router in the group is active and all other group members are in standby. A standby router will take over as the active router when connectivity to the active…
Etherchannel, Portchannel, bonding or NIC teaming? Etherchannel, portchannel, bonding, link-aggregation and NIC teaming are all terms to describe the bundling of two or more ports to form one logical Ethernet link. Ether-channel/Port-channel is the term used by Cisco convention and…
Cisco IPSec VPN tunnels on Cisco IOS routers secures endpoints by forming a tunnel and encrypting the traffic within. Setting up these site to site VPNs can be cumbersome and often involves setting up complicated matching crypto maps on both…
Did you know you can check your voicemail from someone else’s extension? So here’s what you need to do. Dial the voicemail number or hit the message envelope button on your Cisco phone. During the system message, enter the “*”…
Often times you may find that you need to block web messengers due to corporate security policies. Conventional ACLs work for messenger clients that communicate using specific ports, however, you may find some instant messengers run via a web browser…