Displaying 2 results from an estimated 2 matches for "persourcemaxstartup".
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persourcemaxstartups
2024 Apr 25
1
An Analysis of the DHEat DoS Against SSH in Cloud Environments
...om/blog/2024-04-23-an-analysis-of-dheat-dos-against-ssh-in-cloud-environments/
A short summary: the default MaxStartup setting is fully ineffective in
fixing the problem in low-latency network conditions; it is very easy
to force a target to hit 100% CPU utilization in that case.
Furthermore, the PerSourceMaxStartups setting is only effective when
set to 1, which would only allow one unauthenticated connection at a
time from any given source. This works poorly in use cases where a
burst of new connects is normal. Hence, connection throttling at the
kernel level seems a bit better to use in the general case (...
2024 Jun 19
1
An Analysis of the DHEat DoS Against SSH in Cloud Environments
...-of-dheat-dos-against-ssh-in-cloud-environments/
>
> A short summary: the default MaxStartup setting is fully ineffective
> in
> fixing the problem in low-latency network conditions; it is very easy
> to force a target to hit 100% CPU utilization in that case.
> Furthermore, the PerSourceMaxStartups setting is only effective when
> set to 1, which would only allow one unauthenticated connection at a
> time from any given source. This works poorly in use cases where a
> burst of new connects is normal. Hence, connection throttling at the
> kernel level seems a bit better to use i...