What is a cisco switch
Using this type of VPN connection permits the users to connect through the internet anywhere in the world to access the corporate network resources securely. The below image shows the Site-to-Site VPN implementation:Ĭommonly called a mobile VPN. For example, customers or partners can securely access the shared resources of the company. Intranet VPN – it provides secured site-to-site connectivity within the company or internally.Įxtranet VPN – it provides secured site-to-site connectivity outside the company. There are two ways to implement site-to-site VPN: Both Phase 1 and Phase 2 should have the same parameters, such as pre-shared keys, authentication, encryption, and IKE version.
The agreement is called Security Association.
#WHAT IS A CISCO SWITCH HOW TO#
In IKE Phase 2 negotiation, the two firewalls will agree on the configured parameters that define what traffic can go via the VPN tunnel and how to authenticate and encrypt the traffic. IKE Phase 1 negotiation is where we create a secure encrypted channel or encrypted network connectivity for the two firewalls can start the Phase 2 negotiation. In implementing this type of VPN, we need to set up the Phase 1 and Phase 2 VPN negotiations. Common VPN protocols used in site-to-site VPN are Internet Security Protocol (IPSec). Organizations are continuously expanding into different branches, and to protect the data in transit between two branches, we need to implement a site-to-site VPN. There are two types of VPN that we are commonly using, and both are secured but implemented and used in different ways. Lastly, VPN is scalable in that you can add unlimited tunnels and users. VPN also provides security for all the traffic that is sent outside your network through VPN tunnels.
#WHAT IS A CISCO SWITCH FREE#
Using VPN will cost you nothing as it is completely free since most organizations have firewalls already installed with a built-in VPN feature. VPN replaces the dedicated point-to-point link with the emulated point-to-point link or secure connection that shares the common infrastructure. All the network traffic that is sent through the VPN tunnel will be encrypted and kept confidential from hackers on a network or the internet. Cisco VPN solutions are offered as well.Ī Virtual Private Network (VPN) is an encrypted tunnel between two or more devices, usually a firewall, such as the Cisco Adaptive Security Appliance (Cisco ASA), over an unsecured network such as the internet. The best and cheapest option to protect our data in transit is by using Virtual Private Network (VPN). Data in transit is more vulnerable to attacks as the data will travel outside your protected network. There are three states of data that we need to protect – data at rest, data in use, and data in transit. Security is compulsory in today’s generation because of emerging threats initiated by hackers ready to compromise your network and resources.