Re: [ntp:questions] Ginormous offset and slow convergance

2011-11-29 Thread David J Taylor
Running with an Oncore GPS & a TAPR TAC. If I "ntpdate -b" a nearby synchronized server before I start ntpd, the offsets initially look pretty good: [] Is there anything I can do to decrease the convergence time? Peter, Are you using a drift file, and allowing it to get a good value for th

Re: [ntp:questions] Ginormous offset and slow convergance

2011-11-29 Thread Harlan Stenn
Bill wrote: > Possibly chrony. Except that the "price" of faster convergence is vastly > improved accuracy and just as stable as NTPD. > But it only runs on Linux or bsd, not windows. You have a very interesting view of the world. As best as I can tell, you live in a world with really bad clocks

Re: [ntp:questions] Ginormous offset and slow convergance

2011-11-29 Thread unruh
On 2011-11-29, Richard B. Gilbert wrote: > On 11/29/2011 1:42 PM, Pete Ashdown wrote: >> Running with an Oncore GPS& a TAPR TAC. If I "ntpdate -b" a nearby >> synchronized server before I start ntpd, the offsets initially look pretty >> good: >> >> remote refid st t when pol

Re: [ntp:questions] NTP Denial of Service attack 29 November 2011

2011-11-29 Thread Steve Kostecke
On 2011-11-29, Rich wrote: > USNO is seeing an apparent coordinated denial of service attack on NTP > originating with the following IPs: > 220.117.53.67; 218.92.115.152; 114.40.28.224; 218.201.21.194. I > recommend that you block 220.0.0.0/8, 218.0.0.0/8, and 114.0.0.0/8. > There will likely b

Re: [ntp:questions] NTP Denial of Service attack 29 November 2011

2011-11-29 Thread Doug Calvert
On 11/29/2011 03:44 PM, Rich wrote: > USNO is seeing an apparent coordinated denial of service attack on NTP > originating with the following IPs: > 220.117.53.67; 218.92.115.152; 114.40.28.224; 218.201.21.194. I > recommend that you block 220.0.0.0/8, 218.0.0.0/8, and 114.0.0.0/8. > There will l

Re: [ntp:questions] NTP Denial of Service attack 29 November 2011

2011-11-29 Thread Rich
NTP DoS Alert: USNO now recommends additionally blocking 221.0.0.0/8 for all services. This is the source of continuing NTP DoS on Nov. 29,2011. This address space is owned by Data Communication Bureau Shandong, No. 77 Jingsan Road,Jinan,Shandong,P.R.China. Richard Schmidt Time Service Department

Re: [ntp:questions] Ginormous offset and slow convergance

2011-11-29 Thread Richard B. Gilbert
On 11/29/2011 1:42 PM, Pete Ashdown wrote: Running with an Oncore GPS& a TAPR TAC. If I "ntpdate -b" a nearby synchronized server before I start ntpd, the offsets initially look pretty good: remote refid st t when poll reach delay offset jitter ===

Re: [ntp:questions] NTP Denial of Service attack 29 November 2011

2011-11-29 Thread Danny Mayer
On 11/29/2011 4:57 PM, Rich wrote: > >> Isn't that a bit wide a range to block for only 4 IPs? >> What makes you think any further attacks will come from the same range? >> > Only my 17 years experience at the stratum 1 level. I see little > value in providing NTP to Asian Pacific networks from W

Re: [ntp:questions] NTP Denial of Service attack 29 November 2011

2011-11-29 Thread Rich
> Isn't that a bit wide a range to block for only 4 IPs? > What makes you think any further attacks will come from the same range? > Only my 17 years experience at the stratum 1 level. I see little value in providing NTP to Asian Pacific networks from Washington, DC. ___

Re: [ntp:questions] NTP Denial of Service attack 29 November 2011

2011-11-29 Thread Rob
Rich wrote: > USNO is seeing an apparent coordinated denial of service attack on NTP > originating with the following IPs: > 220.117.53.67; 218.92.115.152; 114.40.28.224; 218.201.21.194. I > recommend that you block 220.0.0.0/8, 218.0.0.0/8, and 114.0.0.0/8. > There will likely be more to follow

Re: [ntp:questions] NTP Denial of Service attack 29 November 2011

2011-11-29 Thread Marco Marongiu
Is this message authoritative? Blocking three /8s seems like using a sledgehammer to open a nugget to me... Il 29/11/2011 21:44, Rich ha scritto: > USNO is seeing an apparent coordinated denial of service attack on NTP > originating with the following IPs: > 220.117.53.67; 218.92.115.152; 114.40.2

[ntp:questions] NTP Denial of Service attack 29 November 2011

2011-11-29 Thread Rich
USNO is seeing an apparent coordinated denial of service attack on NTP originating with the following IPs: 220.117.53.67; 218.92.115.152; 114.40.28.224; 218.201.21.194. I recommend that you block 220.0.0.0/8, 218.0.0.0/8, and 114.0.0.0/8. There will likely be more to follow. These appear to origi

[ntp:questions] Ginormous offset and slow convergance

2011-11-29 Thread Pete Ashdown
Running with an Oncore GPS & a TAPR TAC. If I "ntpdate -b" a nearby synchronized server before I start ntpd, the offsets initially look pretty good: remote refid st t when poll reach delay offset jitter =

Re: [ntp:questions] UK - NOTIFICATION OF GPS JAMMING EXERCISES, March 2012

2011-11-29 Thread David J Taylor
"Richard B. Gilbert" wrote in message news:nvcdnzujwblps0ntnz2dnuvz_gkdn...@giganews.com... [] Do you guys ever do anything else? I expect that all countries havae similar exercises, but unannounced. Some may even open jamming up to a commercial venture like lightsquared Mind you, even

Re: [ntp:questions] UK - NOTIFICATION OF GPS JAMMING EXERCISES, March 2012

2011-11-29 Thread Richard B. Gilbert
On 11/29/2011 7:15 AM, David J Taylor wrote: Folks, I have received the following: __ NOTIFICATION OF GPS JAMMING EXERCISES RAF SPADEADAM, CUMBRIA, MARCH 2012 Dates: Between the 5th of March to the 9th of March 2012 inclusive. Times: 0800 -1800 GMT. Lo

[ntp:questions] UK - NOTIFICATION OF GPS JAMMING EXERCISES, March 2012

2011-11-29 Thread David J Taylor
Folks, I have received the following: __ NOTIFICATION OF GPS JAMMING EXERCISES RAF SPADEADAM, CUMBRIA, MARCH 2012 Dates: Between the 5th of March to the 9th of March 2012 inclusive. Times: 0800 -1800 GMT. Location of MULTIPLE jammers: based within 5km