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    Enabling Protocol 51 \ using your own router

    This is a discussion on Enabling Protocol 51 \ using your own router within the Sky Broadband help forums, part of the Sky Broadband help and support category; Hi, I currently have a sky ADSL router ( SR102). I work in IT and have a need to test ...

    1. #1
      agentpineapple's Avatar
      agentpineapple is offline Sky User Member
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      Enabling Protocol 51 \ using your own router

      Hi,
      I currently have a sky ADSL router (SR102). I work in IT and have a need to test things at home. One of the things I'm trying to do is setup a VPN connection between 2 sites. The VPN requires that protocol 51 be forwarded/enabled, which I don't think the SR102 supports.

      Is there a way to enable protocol 51 (protocol, not port). If not, is it possible to replace the sky router with another device? I'm hoping I can use a Cisco ASA instead - thanks in advance...


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    3. #2
      marjohn56's Avatar
      marjohn56 is offline Sky User Member
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      Re: Enabling Protocol 51 \ using your own router

      Bad post, ignore.
      Last edited by marjohn56; 05-09-15 at 09:57 PM. Reason: Posted accidentally!
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    4. #3
      marjohn56's Avatar
      marjohn56 is offline Sky User Member
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      Re: Enabling Protocol 51 \ using your own router

      I thought protocol 50 & 51 are part of the IPSec requirements. I believed IPSec would work through any ip based network, I've certainly done IPSec from my laptop to my home systems, so a little research says they must support nat-t.

      OK, found this on the netgear site, its interesting because it references home routers that do and do not support nat-t.

      Troubleshooting VPN passthrough for Home Routers | Answer | NETGEAR Support

      The draytek 2860 has an IPSec server built in so I would think that also supports nat-t.
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    5. #4
      agentpineapple's Avatar
      agentpineapple is offline Sky User Member
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      Re: Enabling Protocol 51 \ using your own router

      Hi Marjohn,

      Thanks, I'm actually trying to setup a site to site VPN using Microsoft Azure (a cloud platform). If it can be used with SKy, I was going to buy a Cisco device or another piece of kit and see if I can get it up and running

      Connecting to your Azure site-to-site VPN over NAT | Nullsession.com

    6. #5
      marjohn56's Avatar
      marjohn56 is offline Sky User Member
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      Re: Enabling Protocol 51 \ using your own router

      Yes, as you can see from that document the guy has forwarded ports through his router, so as long as you have a router that is nat-t capable and you forward the ports then you should be up and running in no time.

      Oh just noticed, you may have to some static routes too.
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