Penetration testing IPsec VPNs
As companies expand their presence globally, there arises a need for secure electronic communications between geographically dispersed locations. Virtual private networks (VPNs) provide an economically viable option to address this need. A VPN is a private network that uses the public Internet to either connect remote users to the company's internal network or establish a seamless connection between the company's physically isolated sites. Since a VPN uses the Internet it must provide security features like encryption and strong authentication to protect the confidentiality of internal company data. Thus there are inherent security concerns when implementing VPNs.
By Rohyt Belani and K.K. Mookhey at SecurityFocus.
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