How to configure ASA firewall step by step
Hi Guys in these video we use GNS3 and show you how to configure ASA firewall step by step.
The ASA in Cisco ASA stands for Adaptive Security Appliance.
In brief, Cisco ASA is a security device that combines firewall, antivirus, intrusion prevention, and virtual private network (VPN) capabilities.
It provides proactive threat defense that stops attacks before they spread through the network.
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Here you can download directly from my file for GNS3 resources needed.
Windows OS image https://drive.google.com/file/d/10pxv...
CISCO Images : https://drive.google.com/drive/folder...
GNS3 for Windows : https://drive.google.com/drive/folder...
Firewall_Router : https://drive.google.com/drive/folder...
VMware WorkStation 12 : https://drive.google.com/file/d/1HZ0h...
VLAN: Virtual Local Area Network reduce the broadcast domain and separate the LAN into different subnet.
VLANs can be used to partition a local network into several distinctive segments, for instance:
-Production
-Server Farm
-Voice over IP
-Network management
-Storage area network (SAN)
-Guest Internet access
-Demilitarized zone (DMZ)
A subinterface is a virtual interface created by dividing one physical interface into multiple logical interfaces.
A sub-interface in a Cisco Router uses the parent physical interface for sending and receiving data.
DHCP Server: provide IP address to the client for each VLAN.
A DHCP Server is a network server that automatically provides and assigns IP addresses, default gateways and other network parameters to client devices.
It relies on the standard protocol known as Dynamic Host Configuration Protocol or DHCP to respond to broadcast queries by clients.
Network Address Translation (NAT) is designed for IP address conservation. It enables private IP networks that use unregistered IP addresses to connect to the Internet. NAT operates on a router, usually connecting two networks together,
and translates the private (not globally unique) addresses in the internal network into legal addresses, before packets are forwarded to another network.
As part of this capability, NAT can be configured to advertise only one address for the entire network to the outside world. This provides additional security by effectively hiding the entire internal network behind that address.
NAT offers the dual functions of security and address conservation and is typically implemented in remote-access environments.
NAT allows a single device, such as a router, to act as an agent between the Internet (or public network) and a local network (or private network), which means that only a single unique IP address is required to represent an entire group
of computers to anything outside their network.
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