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suricata: Configure HTTP decoder

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This will now scan all request and response bodies where possible
and use up to 256MB of RAM

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
Signed-off-by: Stefan Schantl <stefan.schantl@ipfire.org>
This commit is contained in:
Michael Tremer
2019-03-02 17:18:38 +00:00
committed by Stefan Schantl
parent 96495c9aa2
commit 8efbd71caa
1 changed files with 5 additions and 61 deletions
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66
config/suricata/suricata.yaml
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@@ -211,7 +211,7 @@ app-layer:
dp: 53
http:
enabled: yes
# memcap: 64mb
memcap: 256mb
# default-config: Used when no server-config matches
# personality: List of personalities used by default
@@ -225,32 +225,6 @@ app-layer:
# Limit to how many layers of compression will be
# decompressed. Defaults to 2.
#
# server-config: List of server configurations to use if address matches
# address: List of ip addresses or networks for this block
# personalitiy: List of personalities used by this block
# request-body-limit: Limit reassembly of request body for inspection
# by http_client_body & pcre /P option.
# response-body-limit: Limit reassembly of response body for inspection
# by file_data, http_server_body & pcre /Q option.
# double-decode-path: Double decode path section of the URI
# double-decode-query: Double decode query section of the URI
#
# uri-include-all: Include all parts of the URI. By default the
# 'scheme', username/password, hostname and port
# are excluded. Setting this option to true adds
# all of them to the normalized uri as inspected
# by http_uri, urilen, pcre with /U and the other
# keywords that inspect the normalized uri.
# Note that this does not affect http_raw_uri.
# Also, note that including all was the default in
# 1.4 and 2.0beta1.
#
# meta-field-limit: Hard size limit for request and response size
# limits. Applies to request line and headers,
# response line and headers. Does not apply to
# request or response bodies. Default is 18k.
# If this limit is reached an event is raised.
#
# Currently Available Personalities:
# Minimal, Generic, IDS (default), IIS_4_0, IIS_5_0, IIS_5_1, IIS_6_0,
# IIS_7_0, IIS_7_5, Apache_2
@@ -260,14 +234,8 @@ app-layer:
# Can be specified in kb, mb, gb. Just a number indicates
# it's in bytes.
request-body-limit: 100kb
response-body-limit: 100kb
# inspection limits
request-body-minimal-inspect-size: 32kb
request-body-inspect-window: 4kb
response-body-minimal-inspect-size: 40kb
response-body-inspect-window: 16kb
request-body-limit: 0
response-body-limit: 0
# response body decompression (0 disables)
response-body-decompress-layer-limit: 2
@@ -278,41 +246,17 @@ app-layer:
# Take a random value for inspection sizes around the specified value.
# This lower the risk of some evasion technics but could lead
# detection change between runs. It is set to 'yes' by default.
#randomize-inspection-sizes: yes
randomize-inspection-sizes: yes
# If randomize-inspection-sizes is active, the value of various
# inspection size will be choosen in the [1 - range%, 1 + range%]
# range
# Default value of randomize-inspection-range is 10.
#randomize-inspection-range: 10
randomize-inspection-range: 10
# decoding
double-decode-path: no
double-decode-query: no
server-config:
#- apache:
# address: [192.168.1.0/24, 127.0.0.0/8, "::1"]
# personality: Apache_2
# # Can be specified in kb, mb, gb. Just a number indicates
# # it's in bytes.
# request-body-limit: 4096
# response-body-limit: 4096
# double-decode-path: no
# double-decode-query: no
#- iis7:
# address:
# - 192.168.0.0/24
# - 192.168.10.0/24
# personality: IIS_7_0
# # Can be specified in kb, mb, gb. Just a number indicates
# # it's in bytes.
# request-body-limit: 4096
# response-body-limit: 4096
# double-decode-path: no
# double-decode-query: no
# Note: Modbus probe parser is minimalist due to the poor significant field
# Only Modbus message length (greater than Modbus header length)
# And Protocol ID (equal to 0) are checked in probing parser