[tor-relays] Reapply exit policy on reload

[George Hartley]

Then these must be targeted attacks, as I have never encountered something like this during 10 years of relay operation under different providers and aliases.

Sorry, but the Tor logs that I am seeing suggest that most DoS gets mitigated.

As far as I know, the concurrent connection (not circuit!) DoS defense is relatively new, so give the developers some time.

Also, any default IPTables rule-set should automatically either reject or just drop connections above a certain threshold.

All the best,
George

On Friday, August 9th, 2024 at 8:59 PM, boldsuck <lists at for-privacy.net> wrote:

> On Mittwoch, 7. August 2024 14:30:27 CEST George Hartley via tor-relays wrote:
> 

> > This is already impossible, as both circuit and concurrent connection DoS
> > both gets detected and the IP in question flagged and blacklisted.
> 

> 

> No.
> DoS has been a topic of conversation at nearly all relay meetings for over 2
> years. Enkidu and Toralf have developed Tor-ddos IPtables rules for the
> community. Article10 specifically for Tor exits and trinity has developed the
> patch.
> 

> https://gitlab.torproject.org/tpo/core/tor/-/issues/40676
> Roger, Mike, Nick and Perry certainly wouldn't have let Trinity develop the
> feature if the current DoS mitigations in Tor had helped.
> 

> > Please see the manual on this:
> > 

> > https://2019.www.torproject.org/docs/tor-manual.html.en#DoSCircuitCreationEn
> > abled
> 

> 

> This is a client to relay detection only. "auto" means use the consensus
> parameter. (Default: auto)
> It is defined in the consensus:
> https://consensus-health.torproject.org/#consensusparams
> 

> > > Example: 500K connections from IP 1.2.3.4
> 

> These are numbers from reality and not fantasy.
> AFAIK, Article10 and relayon already had 1,000,000 connections per IP!
> 

> 

> --
> ╰_╯ Ciao Marco!
> 

> Debian GNU/Linux
> 

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> tor-relays at lists.torproject.org
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