Im not sure with Sure Signal but i think the TMobile equivalent used to do something clever with MTU / packet size to check you was not VPN’ing back from another country, I suspect if Vodafone do something similar, perhaps you are using PPPOE with a lower MTU and the IPSec tunnel cannot form with the required MTU ?
Regards Darren On 4 May 2017, at 09:07, Paul Bone <[email protected]> wrote: > Is there anyone from Vodafone on this list who could advise on Vodafone > Suresignal devices? > > We have just taken over the internet supply of a site (so changed customers > IP addresses) and several users have Vodafone Suresignals which no longer > work after the switch. We have not changed their routers just their IP > addresses. > > Vodafone 1st line support just keeps telling the customers that the ISP is > blocking their IPsec tunnels which we are not. It looks to me like Vodafone > might have some whitelists for these devices but I am speculating! > > Thanks > > Best regards, Paul > > > > >
