Windows specify source ping (ICMP) Interface and IP

This is something that has come up multiple times especially when working and dealing with network related tasks. Many times server engineers would contact us and complain about network traffic or VPN related issues or more recently I had to test VPN Connectivity from a server to other remote sites. However this server had 2 Network Cards. Both of them had different IP’s. Here is how the… Continue Reading Windows specify source ping (ICMP) Interface and IP

Upgrade Autonomous to LWAP – Cisco Access Points via CLI

It is much easier and faster to upgrade from Autonomous to Light Weight via command line. Below are the steps: First I put the Cisco Access Points (Autonomous) on the wireless VLAN Once they grabbed an IP address, I telnet into the Cisco Autonomous Access Point with the default credentials, usually they are UserName: Cisco, Password: Cisco, [Enable: Cisco] Next I confirmed that I have… Continue Reading Upgrade Autonomous to LWAP – Cisco Access Points via CLI

ASA 8.4 NAT with specific ports

Cisco ASA NAT specific ports TCP/UDP Version 8.4 So we all are pretty much used to the new Cisco ASA 8.3+ NAT, Auto NAT and Twice NAT. I am writing this article on, “how to NAT single or multiple specific ports to a single Public IP address”. When and why would you want to do this? Well some… Continue Reading ASA 8.4 NAT with specific ports

Cisco 881 IOS Router basic configuration with Dynamic WAN IP

Just finished configuring a Cisco 881 IOS Router with Comcast and Dynamic IP address. Sharing my configuration experience and steps for the Cisco router. Requirement: I just needed the Cisco 881 Router connected to the Comcast modem so that computers connected to the Cisco 881 router can access the network and the Internet. Picture below shows you the connectivity diagram for my local network. Keeping the above connectivity requirements I configured the Cisco 881 Router like… Continue Reading Cisco 881 IOS Router basic configuration with Dynamic WAN IP

Cisco ASA Policy Based Static Source NAT

Setting up VPN Connectivity between multiple locations is a pretty common task these days. It is a very simple and straight forward setup unless NAT comes into the play, there are multiple offices with overlapping subnets etc. Usually in that scenario solution is simple both sides will perform NAT and present their internal network as something else to the other… Continue Reading Cisco ASA Policy Based Static Source NAT

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