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VPN is obviously extremely useful if you have given all your trusted employees and also the key contractors a remote access to your network with the help of a client VPN or a virtual private network. There are so many cost benefits and productivity related benefits of using a VPN. Below are some useful tips that you can follow while using a VPN.
1. You must use a strong authentication method
This will surely depend upon the infrastructure of your network. You should also be able to check your VPN and documentation of your operating system in order to determine all your options.
2. A strong encryption method should be used
An L2TP or a layer two tunneling protocol can be very helpful when used. This is a network with certain types of Microsoft Servers. For example, a Point to point protocol can be termed to be very weak unless the password of your clients are guaranteed to be very strong.
3. Limit your VPN access to all those with a valid reason for business
Any VPN connection is a door that can be used to enter the LAN. You should only keep it open when it essentially needs to be open. The remote contractors and employees should any time be discouraged from connecting to your VPN to download the files that are required on a common basis.
4. Access to the selected files through extranet and intranet
If you have a secure HTTP site that comes with a safe password and authentication, it will expose only the selected files on one of the single servers and not your entire network.
5. Email access should be enabled without requirement of VPN
On all the servers of Microsoft Exchange, you must set up a server for Exchange proxy in order to allow the Outlook to access this Exchange by using an RPC or remote procedure call. This is obviously protected with the help of an SSL encryption.
6. Enforcing and implementing a strong password
There should be a very strong policy for a password. You must also understand, that your network is only as secure as the weakest of password that is in use. There should not be anyone that can be allowed to keep a password on a permanent basis. Use a word, a number or any other alphanumeric combination of password. This can help you to secure your VPN on a long term basis.
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Source by Aman Tumukur Khanna
