![]() ![]() Select the Diffie-Hellman key group (options are DH1, DH2, DH5).Set the “Encryption” and “Authentication” proposal you wish to use (Encryption options are DES, 3DES, AES128, AES192, AES256) (Authentication options are MD5, SHA1, SHA256, SHA512).Under the Phase 1 Settings, set the Negotiation Mode dropdown to use the “Main” mode.Enter/Create a VPN authentication “Pre-Shared Key”.Make sure the Peer Gateway Address is set to “Dynamic Address”. ![]() Select the WAN interface you wish to use to connect the VPN under the My Address dropdown field.Check the box to enable the VPN rule and provide a name.On the top left of the window, click the Show Advanced Settings button to view all options in the menu. ![]() Click the Add button to insert a new rule. In the IPSec VPN menu, click the VPN Gateway tab to add Phase 1 of the tunnel setup. Login to the ZyWALL web configuration page and go to the menu Configuration → VPN → IPSec VPN. Third-party IPSec software is required to establish the VPN connection as current operating systems lack a built-in IPSec client. This guide will reference the IPSec protocol to establish a secure VPN tunnel between external hosts (users connected to the internet outside the company network structure) and the ZyWALL router. There are multiple types of VPN protocols/technologies that can be used to establish a secure link to the company network, L2TP, PPTP, SSL, OpenVPN, etc. ![]() A remote-access VPN (client-to-site) allows employees travelling or teleworkers to secure access to company network resources. VPNs are used to transport traffic over the internet of an insecure network that uses TCP/IP communications. A VPN (virtual private network) provides secure communication between sites without the expense of leased lines. ![]()
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