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21Apr 2016

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How to fix the four biggest problems with VPN connections

Being an emerging technology of IT industry, recently the use of the VPN is not confined to the corporates but also individuals also started using of this technology to make them more secure while being online via any public network. The mostly faced four VPN problems are
i) Rejection of the VPN connection
ii) Acceptance of unauthorized connection
iii) No access to the locations which are situated beyond the VPN server
iv) Non-establishment of proper tunnel.
In the following, we are going to describe the fixing method of these above mentioned VPN problems.
Rejection of the VPN connection – If you see this problem, at first check whether router as well as the remote access are properly running. This can be done by opening the administrative tools which are present under the server control panel. If you see that everything is working fine then you may ping the specified VPN server which you are using at that time from your own IP address. In any case if the TCP as well as IP connection exists, then you may try pinging by using the fully qualified domain name (FQDN) of the server rather than using its address. If these checking shows negative results then you are facing a DNS problem otherwise everything is ok with your VPN connection.
Acceptance of unauthorized connection – Accepting unauthorised connection to your VPN may cause critical damage or theft of your own confidential info. That’s why it should be prevented by any means. It depends on the setting of the remote access policy. You may trace the entire connected user in the active directory. Rather than allowing remote access to your VPN, you should ‘set to deny a user’s connection’ to prevent this issue.
No access to the locations which are situated beyond the VPN server – This location related problem usually caused due to the non-granting of the permission to the user for accessing the entire network. If you want to fix this problem at first you have to go to the ‘Routing and Remote Access console’. Then open the properties sheet of your VPN server and go to the property sheet’s IP tab. There you have to enable the ‘Enable IP Routing check box’ option. This will allow you to access the locations which are beyond the VPN server.
Non-establishment of proper tunnel – Difficulty of establishment of tunnel usually occurred due to the involvement of more than one router in IP Packet filtering. IP packet filtering is solely responsible for the misbehaving of IP tunnel traffic. Detect whether any device or client, server or between them is performing the same action. If found remove the same for fixing the issue. Sometimes this issue is also occurred due to the presence proxy server between the VPN server & the client.

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