Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-roughtime-05: tag change makes implementation more complex)
Hal Murray <halmurray+ietf@sonic.net> Wed, 29 September 2021 00:33 UTC
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Subject: Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-roughtime-05: tag change makes implementation more complex)
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Danny Mayer said: > There is nothing to prevent me creating a protocol called SMOOTHTIME and > throwing the ROUGHTIM value in the header to fool you. How has that made the > protocol unambiguous? That doesn't prevent tunneling, and yes I'm familiar > with this idea and I've seen the implementations. The only proper way to > handle this is deep packet inspection and fingerprinting. Nothing else > really works. The bad guys can construct anything. But what about bugs or stupidity? I've been looking at the garbage arriving at a pool server. Some of it is obviously garbage. But there is a lot of stuff that is not obviously good or bad. As a general policy, is it worth a bit of space in a UDP packet to simplify sanity checking? Another possibility would be to add a tag for the source package. Yes, it can be forged, but it would help track down abuse from buggy code. -- These are my opinions. I hate spam.
- [Ntp] draft-ietf-ntp-roughtime-05: tag change mak… JP Sugarbroad
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Watson Ladd
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… JP Sugarbroad
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Watson Ladd
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… JP Sugarbroad
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Watson Ladd
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Danny Mayer
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Marcus Dansarie
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Danny Mayer
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Watson Ladd
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Danny Mayer
- Re: [Ntp] draft-ietf-ntp-roughtime-05: tag change… Danny Mayer
- [Ntp] Danny's Review (was Re: draft-ietf-ntp-roug… Watson Ladd
- Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-… Danny Mayer
- Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-… JP Sugarbroad
- Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-… Danny Mayer
- Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-… Salz, Rich
- Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-… Hal Murray
- Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-… Danny Mayer
- Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-… Salz, Rich
- Re: [Ntp] Danny's Review (was Re: draft-ietf-ntp-… JP Sugarbroad
- [Ntp] Antw: [EXT] Re: draft‑ietf‑ntp‑roughtime‑05… Ulrich Windl
- [Ntp] Antw: [EXT] Danny's Review (was Re: draft‑i… Ulrich Windl
- [Ntp] Antw: [EXT] Re: Danny's Review (was Re: dra… Ulrich Windl
- Re: [Ntp] Antw: [EXT] Re: Danny's Review (was Re:… Danny Mayer
- Re: [Ntp] [EXT] Danny's Review (was Re: draft‑iet… Watson Ladd
- [Ntp] Antw: Re: Antw: [EXT] Re: Danny's Review (w… Ulrich Windl
- [Ntp] Antw: Re: [EXT] Danny's Review (was Re: dra… Ulrich Windl
- Re: [Ntp] Antw: Re: [EXT] Danny's Review (was Re:… Danny Mayer
- Re: [Ntp] Antw: Re: [EXT] Danny's Review (was Re:… Salz, Rich
- Re: [Ntp] Antw: Re: [EXT] Danny's Review (was Re:… Watson Ladd
- Re: [Ntp] Antw: Re: [EXT] Danny's Review (was Re:… Salz, Rich
- Re: [Ntp] Antw: Re: [EXT] Danny's Review (was Re:… Danny Mayer