Which VPN Solution should we choose ?
Before choosing correct VPN solution for our network, we need to ask below question to us.
- What do I need to protect?
- What kind of protection is required?
- How much protection is needed?
First need to determine what is to be protected. Do I need to protect traffic for specific applications, such as e-mail, database access, file transfers, and others? Do I need to protect traffic for specific hosts? Do I need to protect traffic for specific network segments? If I only need to protect traffic for specific applications, I would probably first examine SSL VPN to see if there is a solution available for the particular application or applications that need to be protected. Otherwise, I would look at other VPN solution
Second, what kind of protection is necessary? Does the traffic need to be encrypted? Do I need to perform packet integrity checking? How important is it to verify a device’s identity? Once I’ve answered these questions, I can narrow in on a more specific VPN solution. For instance, if I need encryption, I can immediately rule out GRE.
And third, how much protection is needed? For example, if I require encryption to provide data confidentiality, how strong does the encryption process need to be? Can I use DES or must I use a much stronger encryption algorithm, like 3DES? For device authentication, can I use pre-shared keys or should I use digital certificates? Again, I use these questions to narrow my pick to the most appropriate VPN solution.
There are many services being offered by the ISP providers. These include Site-to-site VPN, VPN on dial up networks, VPN on broadband networks, Voice with VPN and VPN on ISDN services
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