Cisco

Cisco Site to Site VPN (Dynamic to Static)

In most cases, a branch office uses a static outside IP address to connects to a main office by configuring a site-to-site IPsec VPN between two Cisco ASA firewalls with static IP address on both end, But what if one of the remote ASA firewalls has a dynamic IP address?

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Cisco Router – Switch DHCP server configuration

DHCP server on a Cisco router or switch.

DHCP is an application layer protocol used to distribute network configuration parameters, such as IP addresses, subnet masks, default gateways, etc.. to devices on the network. a DHCP client send request to a DHCP server. A DHCP server is assigns network parameters (IP address) to the DHCP client from configured IP addresses pool.

Cisco router and switches can be configured as a DHCP server, In this post I will walks you through the configuration process.

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How to stretch your network behind firewall to Windows Azure by setting up a Site to Site VPN

How to stretch your network behind firewall to Windows Azure and setting up a Site to Site VPN using RRAS.

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You may planning to stretch your datacenter network to Windows Azure by setting up a Site to Site VPN where the VMs up in Azure are effectively connected to the Enterprise Datacenter. The Site to Site VPN just extends the datacenter to allow for VMs to be created in the cloud With VMs both on-premise and up in Azure.

You’ve probably read guidance requiring you to have two network adapters, one for internet facing traffic and the other for internal facing traffic. You may have also read that you must assign a static public IP address on the Internet facing network adapter as you cannot NAT the traffic.

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