Method for establishing secure communication link between computers of virtual private network
A technique is disclosed for establishing a secure communication link between a first computer and a second computer over a computer network. Initially, a secure communication mode of communication is enabled at a first computer without a user entering any cryptographic information for establishing the secure communication mode of communication. Then, a secure communication link is established between the first computer and a second computer over a computer network based on the enabled secure communication mode of communication. The secure communication link is a virtual private network communication link over the computer network in which one or more data values that vary according to a pseudo-random sequence are inserted into each data packet.
1. A method of accessing a secure network address, comprising:
sending a query message from a first network device to a secure domain service, the query message requesting from the secure domain service a secure network address for a second network device;
receiving at the first network device a response message from the secure domain name service containing the secure network address for the second network device; and
sending an access request message from the first network device to the secure network address using a virtual private network communication link.
2. The method according to claim 1 , further including supporting a plurality of services over the virtual private network communication link.
3. The method according to claim 2 , wherein the plurality of services comprises a plurality of communication protocols, a plurality of application programs, multiple sessions, or any combination thereof.
4. The method according to claim 3 , wherein the plurality of application programs comprises video conferencing, e-mail, a word processing program, telephony or any combination thereof.
5. The method according to claim 2 , wherein the plurality of services comprises audio, video, or any combination thereof.
6. The method according to claim 1 , wherein the secure network address includes a security feature.
7. The method according to claim 1 , wherein the secure network address is encrypted.
8. The method according to claim 7 , further including decrypting the encrypted secure network address.
9. The method according to claim 1 , further including supporting a unsecure communication link between the first and second network device.
10. The method according to claim 1 , wherein the secure network address is an IP address belonging to the second network device.
11. The method according to claim 1 , further including automatically initiating the virtual private network communication link after the access request message is received at the second network device.
12. The method according to claim 1 , further including using tunneling over the virtual private network communication link.
13. The method according to claim 1 , further including using tunnel packeting over the virtual private network communication link.
14. The method according to claim 1 , wherein the secure communication link is an authenticated link.
15. The method according to claim 1 , further including performing the method of claim 1 with a client computer connected to a communication network.
16. The method according to claim 1 , wherein the second network device has an unsecure name.
17. The method according to claim 1 , wherein the secure network address is registered with the secure domain service prior to the step of sending a query message to a secure domain service.
18. The method according to claim 1 , further including performing the method of claim 1 with a mobile device connected to a communication network through a cellular network.