Telnet is a command line way to access the router. Open up a Dos command session and type in

Telnet 192.168.1.1

(or whatever your router IP address is.
It will prompt for your password. Enter it.
Then key in the command as above.
When done, close the window or type 'exit'

Thanks what does this command do?

srv nat ipsecpass on

I dont want to mess up the normal router setting

There are known compatibility issues between IPSEC and NAT.

IPSEC pass through is a technique for allowing IPSEC packets to pass through a NAT router. By itself, IPSEC does not work when it travels through NAT. Newer IKE and IPSEC implementations support NAT-Traversal which is a technique to detect NAT and switch to UDP encapsultion for IPSEC ESP packets. However, many router vendors have developed a "pass through" technique that allows IPSEC packets to pass through NAT without NAT-T support.

This command sets IPSEC Passthru on.

You might not need it for a 2820, but it's worth a try..

ok thanks I have an 2800 VG so not sure if it works, did you get yours working yet?

For info: I have had a vodafone suresignal working with a 2820 since they 1st came out as an 'access gateway' with no modification to my 2820 setup. Setup is as out of the box with just wan1 on dsl.

As a side issue the suresignal can be flakey, although alot better now than when it was released.

W

think you must be one of the lucky ones, can't for the life of me get the thing to work.

Wonder if the Vodafone device is faulty.

I have an older model with 1 hardwired pc and about 4-5 devices working wirelessly, the Vodafone is also plugged in but will not have it.