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DDNS to UTM

Hello!

I'm trying to get DDNS working to my UTM. Used to work but somethng has happened. Don't know what... If I do a nslookup "my.dns.com" I will reeceive an IP-address. I will receive the same IP if I do myip.dk in a webbrowser. If i look at my WAN interface in UTM it has an completely different IP. Is that correct? My UTM is connected directly to my cable modem.

/Johan

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0 dirkkotte over 4 years ago

Possible your provider use NAT/Masquerading to connect you to the internet.

Do you see a private IP-range at the interface (10.x.x.x / 172.16-32.x.x / 192.168.x.x) ?

Dirk

Systema Gesellschaft für angewandte Datentechnik mbH // Sophos Platinum Partner
Sophos Solution Partner since 2003
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0 Johan Oester over 4 years ago in reply to dirkkotte

No. Wan interface has an IP 100.64.X.X
If i do nslookup my IP is 158.174.X.X.

For me, that is confusing.

*edit* 100.64.X.X IS a private address. Did not know that.

How to solve this problem?

/Johan
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0 dirkkotte over 4 years ago in reply to Johan Oester

There are some VPN/Tunnel provider.

Don#t know other ways to reachable behind provider-NAT.

... or search for another provider.

Dirk

Systema Gesellschaft für angewandte Datentechnik mbH // Sophos Platinum Partner
Sophos Solution Partner since 2003
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0 BAlfson over 4 years ago in reply to Johan Oester

Halloj Johan,

Is it possible to get your ISP's equipment into bridge mode?

Cheers - Bob

Sophos UTM Community Moderator
Sophos Certified Architect - UTM
Sophos Certified Engineer - XG
Gold Solution Partner since 2005

MediaSoft, Inc. USA
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0 Guadalupe Gomez over 3 years ago in reply to Johan Oester

Johan Oester said:

No. Wan interface has an IP 100.64.X.X
If i do nslookup my IP is 158.174.X.X.

For me, that is confusing. WalgreensListen

*edit* 100.64.X.X IS a private address. Did not know that.

How to solve this problem?

/Johan

i m also sherching for any solution
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0 Jay Jay over 3 years ago in reply to Guadalupe Gomez

100.64.x.x is carrier grade nat according to wikipedia - https://en.wikipedia.org/wiki/Reserved_IP_addresses

You may need to get a static ip or contact your isp to allow unsolicited inbound traffic.

I stopped using ddns directly some time ago. Last time was with noip.com as the ddns provider.

I have my own domain registered with a shared webhost. I assigned a sub domain A record to point to my home wan ip. One of the hosted local servers uses cloudflare's api to update the sub.domain.com A record periodically (checks once a day I believe) if it changes.

It's been 2 years since I set this up so I can't remember exact details, but here's a link to the steps I used.

https://andrewwegner.com/setup-lets-encrypt.html
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