187 367 YouTube!

3

VPN (Virtual Private Network). VPN , , , . VPN , . VPN , .


VPN Point to point (-), (tunnel), (peer). , , .

, VPN , , (encryption domain). , , . , VPN .

, VPN - , VPN-, : OpenVPN, VyprVPN, TunnelBear .

, , :

   IPSec  VPN

, VPN .

  1. , , .
  2. ,
  3. ,

, , - IPsec(IP Security).

IPsec , . IPsec :

  1. AH (Authentication Header) . , . .
  2. ESP (Encapsulating Security Protocol) , , , .
  3. IKE (Internet Key Exchange protocol) . , VPN .

IPsec SA (Security Association). SA VPN IPsec. SA , IPsec , VPN .

, VPN IPsec :

VPN , , SA.

. . SA , , . VPN .


?


: