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117 posts

Master Geek
+1 received by user: 21

Topic # 193508 13-Mar-2016 22:03
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Got an odd one for you.

Using a Draytek 2760Vn as the primary router for a fixed wireless service at my parents home (note: router, the dish acts as some sort of magical modem).
Living in a different part of the country means I have to VPN into the router to administer the various machines through VNC; this was all going well until VoIP problems forced us to switch to the locked down router provided by the ISP (no VPN functionality).


On swapping the Draytek back in a month or so later (with no change in config on router or at ISP), I discovered that after VPN connections from a remote dial in user simply time out. Checking the Syslog shows no activity at all for VPN, not a single instance indicating misconfiguration or failed handshake etc.


Factory reset, upgraded the firmware, reconfigured both ends of the equation, got a friend to try dial in: still no connection, timing out after about a minute.


Interestingly, said friend has exactly the same problem with VPN'ing into his office's Draytek since a few days ago.




Does anyone have any recommendations on what steps we should try next?

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5236 posts

Uber Geek
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  Reply # 1512617 13-Mar-2016 22:05
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You have a public IP - i.e. ISP not using CGNAT?



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117 posts

Master Geek
+1 received by user: 21

  Reply # 1512662 14-Mar-2016 01:08
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You have a public IP - i.e. ISP not using CGNAT?







You are correct sir, Got a public IP and checked that it hadn't changed on me.

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Ultimate Geek
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  Reply # 1512663 14-Mar-2016 01:12
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Seems like a bit of a mission, what about an alternative like teamviewer?

117 posts

Master Geek
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  Reply # 1512766 14-Mar-2016 09:42
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Teamviewer hasn't been cutting the mustard thus far. Great remote admin tool, but I also need access to files off the nas, and synology's online service is painfully slow.

When VPN works, it's ideal for me.

117 posts

Master Geek
+1 received by user: 21

  Reply # 1513619 15-Mar-2016 11:40
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Sorted! (kindof), ISP enabled DMZ on the dish and I can connect now. Must have had ports blocked.

Just got to work out why my Android phone can establish a tunnel just fine, but my Windows machines fail out at the last step.

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