IPSEC VPN fails since upgrade to PN Fibre
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IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 6:57 PM
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I'm hoping that someone can help me solve a frustrating problem..
I use Shrewsoft VPN client to connect to services at work. Until I upgraded to Plus.net fibre the client worked flawlessly. Since upgrading to fibre the client fails at "bringing up tunnel" phase.
If I connect the same laptop to a different broadband service (at a friends) the it connects immediately.
I am using a Draytek Vigor 2820 as the router, I was using it prior to fibre and the VPN worked OK with that.
I have tried switching out the Draytek to use the supplied Technicolor PlusNet TG582n and I get the same problem.
I have done some googling and came up with a couple of things which I've tried but to no avail..
e.g. http://www.draytek.co.uk/archive/kb_vigor_passthrough.html
I've also upgraded the Draytek to the latest firmware version to no avail..
Any sensible suggestions based on the above info gratefully received !
Cheers
Re: IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 7:07 PM
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Let us know how that goes...
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Re: IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 7:13 PM
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anyway, it's set to OFF..
cheers
Re: IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 7:25 PM
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I suppose that since it's now PPPoE rather than PPPoA there MIGHT be an MTU difference ?
There was some problems with the Huawei BT modems and VPN late last year but I thought a firmware update had long since fixed that.
It's possible that the IP you're being assigned on Fibre could be in a different range but given that your server doesn't seem to mind a connection from your friends ISP, I guess it's not that picky.
edit: the Shrewsoft client seems to have some debugging facilities http://www.watchguard.com/help/docs/wsm/xtm_11/en-US/index.html#cshid=en-US/mvpn/ipsec/client/shrew_... , does that help ?
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Re: IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 7:38 PM
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2820 defaulted to 1442
I've switched the 2820to 1380 with no success..
I can't change the Shrewsoft MTU to 1442 because I need a certificate password to make the change and I don't know that password (long story)..
I can't troubleshoot the Shrew connection because the trouble-shooter module is only available on Windows and I don't have an Win devices at home.. Will have to bring one home I guess.
For the record I also use a Cisco IPSEC VPN on Linux and that works flawlessly..
Flippin annoying things, computers !
Re: IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 7:58 PM
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This is how with windows, haven't a clue with linux.
http://community.plus.net/library/broadband/fibre-help-how-to-set-up-a-pppoe-dialler-in-vistawindows...
Re: IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 7:58 PM
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Very strange that the Cisco ipsec works fine.
I'll have a bit of a think to see if I can come up with any more ideas.
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Re: IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 8:13 PM
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@npr great suggestion I will try it !
Re: IPSEC VPN fails since upgrade to PN Fibre
04-08-2014 8:33 PM
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look at this http://community.spiceworks.com/topic/357112-cannot-establish-site-to-site-vpn-since-fibre-broadband...
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Re: IPSEC VPN fails since upgrade to PN Fibre
05-08-2014 8:04 AM
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Re: IPSEC VPN fails since upgrade to PN Fibre
05-08-2014 8:55 AM
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When going from ADSL to FTTC, did the router DNS settings change from some user defined DNS (like Google or OpenDNS) to automatic server assigned DNS (i.e. Plusnet).
It has occasionally been seen that the Plusnet DNS can return slightly different results (compared to other DNS servers), and might explain a change in connectivity ?
Re: IPSEC VPN fails since upgrade to PN Fibre
05-08-2014 9:15 AM
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From memory, I already set the MTU to 1492 but I will check.
The DNS did update itself to the plus.net defaults, however, I already re-set them to both OpenDNS and Google to see if that solved the problem..
My guess is Shrewsoft client doesn't support NAT-T which is what I believe is necessary to be able to traverse the fibre modem and the 2820..
I can get around it by using our Cisco VPN on my linux machine but I'd prefer to use my Mac and I can't get the Cisco VPN connected on that 😞
Re: IPSEC VPN fails since upgrade to PN Fibre
05-08-2014 9:33 AM
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I'm not sure why it should be any different from using the 2820 in ADSL mode. The modem SHOULD be transparent and the only difference on the 2820 is the change from PPPoA using the DSL port to PPPoE using the WAN port. Any NAT done by the 2820 is surely the same...
Quote My guess is Shrewsoft client doesn't support NAT-T which is what I believe is necessary to be able to traverse the fibre modem and the 2820..
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Re: IPSEC VPN fails since upgrade to PN Fibre
05-08-2014 9:47 AM
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Re: IPSEC VPN fails since upgrade to PN Fibre
05-08-2014 9:51 AM
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