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Hello,<br />
<br />
I've been trying for days to configure an ipsec VPN connection on a USG 100 from a client computer using greenbow's software. Everything worked fine on the old firewall Zywall 5. I've been thru the various guides and examples from zyxel greenbow, but none worked. I've checked all the protocols many times. It seems that I'm missing something. The firewall is already configured for the mail server behind it and it works fine for that purpose.<br />
There is a timout error after 5 retrys on Phase1<br />
Zywall USG 100 &nbsp;firmware 2.20<br />
Greenbow Ipsec software V 2.5.204
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Hello,

I've been trying for days to configure an ipsec VPN connection on a USG 100 from a client computer using greenbow's software. Everything worked fine on the old firewall Zywall 5. I've been thru the various guides and examples from zyxel greenbow, but none worked. I've checked all the protocols many times. It seems that I'm missing something. The firewall is already configured for the mail server behind it and it works fine for that purpose.
There is a timout error after 5 retrys on Phase1
Zywall USG 100  firmware 2.20
Greenbow Ipsec software V 2.5.204

Configuring VPN on Zywall USG 100

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.

Internet Protocol Security (IPsec) is a protocol suite for secure Internet Protocol (IP) communications by authenticating and encrypting each IP packet of a communication session. IPsec includes protocols for establishing mutual authentication between agents at the beginning of the session and negotiation of cryptographic keys to be used during the session. IPsec can be used in protecting data flows between a pair of hosts (host-to-host), between a pair of security gateways (network-to-network), or between a security gateway and a host (network-to-host). IPsec is an end-to-end security scheme operating in the Internet Layer of the Internet Protocol Suite.