Files
coredns/plugin.cfg
Ville Vesilehto 0d8cbb1a6b Merge commit from fork
Add configurable resource limits to prevent potential DoS vectors
via connection/stream exhaustion on gRPC, HTTPS, and HTTPS/3 servers.

New configuration plugins:
- grpc_server: configure max_streams, max_connections
- https: configure max_connections
- https3: configure max_streams

Changes:
- Use netutil.LimitListener for connection limiting
- Use gRPC MaxConcurrentStreams and message size limits
- Add QUIC MaxIncomingStreams for HTTPS/3 stream limiting
- Set secure defaults: 256 max streams, 200 max connections
- Setting any limit to 0 means unbounded/fallback to previous impl

Defaults are applied automatically when plugins are omitted from
config.

Includes tests and integration tests.

Signed-off-by: Ville Vesilehto <ville@vesilehto.fi>
2025-12-17 19:08:59 -08:00

80 lines
1.4 KiB
INI

# Directives are registered in the order they should be executed.
#
# Ordering is VERY important. Every plugin will feel the effects of all other
# plugin below (after) them during a request, but they must not care what plugin
# above them are doing.
# How to rebuild with updated plugin configurations: Modify the list below and
# run `go generate && go build`
# The parser takes the input format of:
#
# <plugin-name>:<package-name>
# Or
# <plugin-name>:<fully-qualified-package-name>
#
# External plugin example:
#
# log:github.com/coredns/coredns/plugin/log
# Local plugin example:
# log:log
root:root
metadata:metadata
geoip:geoip
cancel:cancel
tls:tls
quic:quic
grpc_server:grpc_server
https:https
https3:https3
timeouts:timeouts
multisocket:multisocket
reload:reload
nsid:nsid
bufsize:bufsize
bind:bind
debug:debug
trace:trace
ready:ready
health:health
pprof:pprof
prometheus:metrics
errors:errors
log:log
dnstap:dnstap
local:local
dns64:dns64
acl:acl
any:any
chaos:chaos
loadbalance:loadbalance
tsig:tsig
cache:cache
rewrite:rewrite
header:header
dnssec:dnssec
autopath:autopath
minimal:minimal
template:template
transfer:transfer
hosts:hosts
route53:route53
azure:azure
clouddns:clouddns
k8s_external:k8s_external
kubernetes:kubernetes
file:file
auto:auto
secondary:secondary
etcd:etcd
loop:loop
forward:forward
grpc:grpc
erratic:erratic
whoami:whoami
on:github.com/coredns/caddy/onevent
sign:sign
view:view
nomad:nomad