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Forcing unrestricted port for NTPD (ISP Blocks NTP)

Hello all,

My ISP blocks all traffic inbound and outbound on port 123/NTP.

If I login to the UTM console I can successfully run ntpdate if using the -u option (timeout otherwise). Based on ntpq -pn it doesn't look like my UTM is able to reach any of the NTP servers.

Is there a way to do some sort of NAT in UTM so that I force the NTPD requests to use an unrestricted port, or replace NTPD with an alternative that allows for this option such as OpenNTPD.

Thanks!

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0 rfcat_vk over 7 years ago

Your issue does seem very strange considering how many devices rely on accurate time.

Does your ISP offer you an NTP service within their network for general access?

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0 rfcat_vk over 7 years ago

Your issue does seem very strange considering how many devices rely on accurate time.

Does your ISP offer you an NTP service within their network for general access?

XG115W - v19.5.1 mr-1 - Home

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0 Dave Fl over 7 years ago in reply to rfcat_vk

It does not look like it.

I was able to use chrony and openntpd. Since they operate on the unrestricted port range. I can also use ntpdate -u. Unfortunate ntpd is not going to work.
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0 Dave Fl over 7 years ago in reply to Dave Fl

Can I install a package to replace NTPD on UTM or is that not advised?
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0 rfcat_vk over 7 years ago in reply to Dave Fl

You can try, but I don't think that will work as a long term fix.

The other way would be to use one of your network devices as an NTP source and block all other NTP requests in the firewall.

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