Aram Sargsyan c7f79a0353 Add a quota for SIG(0) signature checks ... In order to protect from a malicious DNS client that sends many queries with a SIG(0)-signed message, add a quota of simultaneously running SIG(0) checks. This protection can only help when named is using more than one worker threads. For example, if named is running with the '-n 4' option, and 'sig0checks-quota 2;' is used, then named will make sure to not use more than 2 workers for the SIG(0) signature checks in parallel, thus leaving the other workers to serve the remaining clients which do not use SIG(0)-signed messages. That limitation is going to change when SIG(0) signature checks are offloaded to "slow" threads in a future commit. The 'sig0checks-quota-exempt' ACL option can be used to exempt certain clients from the quota requirements using their IP or network addresses. The 'sig0checks-quota-maxwait-ms' option is used to define a maximum amount of time for named to wait for a quota to appear. If during that time no new quota becomes available, named will answer to the client with DNS_R_REFUSED.		2024-06-10 17:33:08 +02:00
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dns	Log rekey failure as error if too many records	2024-06-10 16:55:12 +02:00
isc	Limit the number of DNS message processed from a single TCP read	2024-06-10 16:48:54 +02:00
isccc	Rework isccc_ccmsg to support multiple messages per tcp read	2024-04-18 20:08:44 +02:00
isccfg	Add a quota for SIG(0) signature checks	2024-06-10 17:33:08 +02:00
ns	Add a quota for SIG(0) signature checks	2024-06-10 17:33:08 +02:00
.gitignore	The isc/platform.h header has been completely removed	2021-07-06 05:33:48 +00:00
Makefile.am	Move irs_resconf into libdns and remove libirs	2023-02-24 09:38:59 +00:00