Re: [uknof] Network Design Advice

--- Begin Message --- --- Original Message --- On Monday, October 2nd, 2023 at 14:26, Michael Sims via uknof wrote: Hey Mick, > I am new to network design, I have mainly come from an operational > background. Honestly I’m struggling to wrap my head around all the parts you > need to c

Re: [uknof] Hyperoptic Dropping NTP UDP/123 on IPv6

from BT fttp consumer 900mb using ipv6 root@penguin:/# mtr time.google.com --udp -P 123 -bzw Start: 2023-10-25T17:48:47+0100 HOST: penguin Loss% Snt Last Avg Best Wrst StDev 1. AS2856 2a00:23c8:1fa4:c401:389b:48ff:fe61:ba61 0.0%100.4 0.4

Re: [uknof] Hyperoptic Dropping NTP UDP/123 on IPv6

--- Begin Message --- > this might have been a technical decision, to block udp:123 from ipv6 > sources, because of the possibility of DoS amplification, then > executed badly? It’s what I suspect! Others are reporting the issue comes and goes (some users don’t have it at all), and in my case th

Re: [uknof] Hyperoptic Dropping NTP UDP/123 on IPv6

this might have been a technical decision, to block udp:123 from ipv6 sources, because of the possibility of DoS amplification, then executed badly? https://www.cloudflare.com/en-gb/learning/ddos/ntp-amplification-ddos-attack/ but, still, one would think that Hyperoptic would have appropriate ingr

[uknof] Hyperoptic Dropping NTP UDP/123 on IPv6

--- Begin Message --- Hey All, I’m on Hyperoptic yesterday evening I noticed some of my home devices were out of sync with reference time - a quick test with ntpdate showed time.google.com , time.cloudflare.com   and time.apple.com