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Fast DynamicDNS updates if OPNSense behind other router? [solved: works oob]
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Topic: Fast DynamicDNS updates if OPNSense behind other router? [solved: works oob] (Read 7815 times)
nibblerrick
Newbie
Posts: 16
Karma: 3
Fast DynamicDNS updates if OPNSense behind other router? [solved: works oob]
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on:
July 27, 2017, 05:29:00 pm »
Hi!
My problem is, I have a router which I have to use (Speedport Hybrid) so OPNSense is behind this router. I can't get a static public IP.
So at the moment DynanimcDNS-check works either with the default interval or a cronjob which can be defined to check e.g. every minute.
I think checking is done with the dyndns-service which is hardcoded. As far as I read they'll block you if you don't have >10min intervals.
So question is, is there anything possible (don't has to be GUI-configurable) to get OPNSense notice an IP-change?
Other methods than check X minutes eventually? Having an open connection to anywhere and recheck when it drops? I really have no idea atm, so I am asking.
10 Minutes doesn't sound so much but if you want e.g. a VPN connected this ten minutes it takes to get the update will everytime be the moment you need it, you know what I mean... :-)
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Last Edit: August 23, 2017, 04:29:51 pm by nibblerrick
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bartjsmit
Hero Member
Posts: 1985
Karma: 193
Re: Fast DynamicDNS updates if OPNSense behind other router?
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Reply #1 on:
July 27, 2017, 11:09:30 pm »
Some posts would suggest that the Speedport Hybrid supports DynDNS. I think you should always run a dynamic DNS updater on the device that holds the public IP, since it will be the first to detect the change.
Bart...
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nibblerrick
Newbie
Posts: 16
Karma: 3
Re: Fast DynamicDNS updates if OPNSense behind other router?
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Reply #2 on:
July 28, 2017, 01:36:50 pm »
Thanks, yes, it does, but limited. They've done some improvements in the past, but it isn't like the options you get in OPNSense. And I had it sometimes not running reliable. So I try not to rely on the speedport and try to find out if there are other possibilities.
An approach might be to have a connection to somewhere open all the time and when it drops it should check IP change?
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franco
Administrator
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Posts: 17485
Karma: 1589
Re: Fast DynamicDNS updates if OPNSense behind other router?
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Reply #3 on:
July 31, 2017, 08:41:12 am »
Hi there,
Normally, Gateway monitoring also provides re-invoke of DynDNS (and RFC 2136) in case the interface is back up and the IP has changed. Do you have Gateway monitoring activated? It's off by default.
Cheers,
Franco
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nibblerrick
Newbie
Posts: 16
Karma: 3
Re: Fast DynamicDNS updates if OPNSense behind other router?
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Reply #4 on:
August 02, 2017, 09:17:50 pm »
Ok, so this takes some days to test, because on the site where OPNSense is running I just got a static IP. On the site where I have the "problem" there is atm still some other sense running which I will migrate. Hope I can finish it this weekend (quite some stuff configured in the actual appliance and when migrating I like to clean up some things and try to get CARP running).
If the monitoring really re-inkoves the DynDNS that would just be great.
I'll let you know as soon as I migrated all the stuff. Thanks!
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franco
Administrator
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Posts: 17485
Karma: 1589
Re: Fast DynamicDNS updates if OPNSense behind other router?
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Reply #5 on:
August 03, 2017, 07:42:59 am »
looking forward to you report
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nibblerrick
Newbie
Posts: 16
Karma: 3
Re: Fast DynamicDNS updates if OPNSense behind other router?
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Reply #6 on:
August 23, 2017, 04:28:57 pm »
After migrating all the stuff, getting multiWAN to work (seems with gatewaygroups and routing it bevahes a bit different than on pfSense actually) I monitored the process now for a while and it works really great!
Nothing more to say, it just works! Thanks!
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franco
Administrator
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Posts: 17485
Karma: 1589
Re: Fast DynamicDNS updates if OPNSense behind other router? [solved: works oob]
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Reply #7 on:
August 23, 2017, 05:16:06 pm »
Cool, thanks for reporting back.
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Fast DynamicDNS updates if OPNSense behind other router? [solved: works oob]