Security of an VPN Server

Hi,
We have a VPN network on our company office. The same is located and maintained on a different branch. Now I had send some files to a different system on the network. The same files are being caught by someone where it was not expected. I am shocked about this. That means some is trying to access the network and getting the data out of it. I am also sharing documents digitally signed and that too I think is not safe. How does it works in keeping a document validate. In my sever the base working service is IPSec.

Why don't you try to implement SSL on a VPN server. This is make you to to allow a limited access to your server and on the other hand you data to remains secure. SSL are an better substitute to IPsec. IPSec usually relies on the web browser. SSL protocols are built in many web browsers, servers, ssl, vpns. etc and it is relatively less costly to implement.

A virtual private network, more commonly known as VPN is an extension of a private computer network through a public network like the Internet for example. We speak of virtual networks, because they connect networks or hosts, not through local networks, but through public networks, the Internet is the best known example. So here you can understand that you are actually working on a public network which is common to all.

In order to ensure the safety of this extended network tunneling mechanism is used, so that the data exchanged on the network are encrypted. The tunneling is therefore to encrypt data before entering them on a public network ( entrance to the tunnel), then decipher the other end of the tunnel or is the machine connected to the VPN as well, all the way data on the public network, even if these data are intercepted are not legible.

A virtual private network normally represents the expansion of local area networks beyond the physical limits of it via public networks. VPNs employ various mechanisms and security protocols to overcome the insecurity inherent in a public network for connecting physical components through a virtual network. Try to get a good firewall options for your network. That will benefit you.

Yes it is safe to work with Digital signature on VPN because this keeps your documents valid. But you have to understand that Digital Signature today is used widely and a safe options for a documents purity. Your keys are part of what is called a certificate of authentication: the legal document is reconue if your authentication certificate was provided to you by a certified and approved (and course fee). There are free software to allow you to digitally sign your document (the most famous being PGP), but your documents will therefore not legally binding.