NTP server for WAN clients

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Damit1

Regular Contributor
Hi there

So Im using asus as NTP server for LAN clients without any problem- if I want it to use it for WAN clients, is it possible?
I cannot find a way to make it work, and Window clients cannot sync.

Thank you
 

L&LD

Part of the Furniture
Not unless you're hosting your NTP server on the www.

What is the purpose of this? Give us detailed and specific reasons and use cases.
 

ColinTaylor

Part of the Furniture
A client that is not in the same LAN network as the router is.
So not remote clients on the internet or over a VPN for example, but a client on an upstream private network.

AFAICT all you need to do is add an ACCEPT rule to the INPUT table, or alternatively just create a port forwarding rule.

EDIT: The router's NTP server appears to bind to the LAN interface so access would have to be through port forwarding.
 
Last edited:

Damit1

Regular Contributor
So not remote clients on the internet or over a VPN for example, but a client on an upstream private network.

AFAICT all you need to do is add an ACCEPT rule to the INPUT table, or alternatively just create a port forwarding rule.

A pc, or PCs on another remote network, that has no VPN whatsoever to this network, and I want to use ASUS as NTP server - easier than remembering all the other NTP servers Im using.

Which rule should I make? It shouls be forwarded to the router itself I guess, would it work?
 

ColinTaylor

Part of the Furniture
A pc, or PCs on another remote network, that has no VPN whatsoever to this network, ...
If you are talking about remote access from the internet that would not be a good idea. You could lock down the source IP address if the remote client's IP doesn't change. But a plastic router running an NTP server connected to a domestic internet feed is never going to as good as something like time.cloudflare.com or time.windows.com.
 

Damit1

Regular Contributor
If you are talking about remote access from the internet that would not be a good idea. You could lock down the source IP address if the remote client's IP doesn't change. But a plastic router running an NTP server connected to a domestic internet feed is never going to as good as something like time.cloudflare.com or time.windows.com.


Ok, possible, would lock it to a specific IP.
What should I do exactly to make it work?
 

ColinTaylor

Part of the Furniture
Why not use time.cloudflare.com and time.windows.com?
 

L&LD

Part of the Furniture
Any reason to re-invent this wheel, (again)?
 

heysoundude

Very Senior Member
Why not use time.cloudflare.com and time.windows.com?
well, if they're looking for ways to synchronise 2 geographically disparate computers/networks/systems, there's always the option of using the time from the biggest ntp pool of Stratum 1 atomic clocks that I'm aware of and that we're all under and have access to: the GPS/GLONASS constellations. if his computer and the other computer can reliably see the sky, he can get GPS receivers for them both and derive clock from the GPS signals they each receive.

If you look back to the beginnings of where @Jack Yaz 's ntpMerlin script started, this is exactly what some people did. military and commercial vessels alike use it for navigation...and they tend to like precision and efficiency
 

JGrana

Very Senior Member
You could always enable DDNS, something like the built in Asus DDNS. I would also consider then to install @Jack Yaz ntpMerlin addon selecting chrony as the ntp server.
Use port forwarding to allow UDP port 123 to forward to the router.
Finally point your WAN devices ntp client to the DDNS name you setup.
 

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