Linux-sysctl-defaults: Unterschied zwischen den Versionen

Aktuelle Version vom 11. Mai 2025, 12:43 Uhr

linux-sysctl-defaults - Standard-Sysctl-Konfiguration für Linux

Beschreibung

Standard-Sysctl-Konfiguration für Linux

Einige sinnvolle Standardwerte für Linux

Installation

sudo apt install linux-sysctl-defaults

Dateien

/usr/lib/sysctl.d/50-default.conf

#  This file originated from systemd.
#
#  This is free software; you can redistribute it and/or modify it
#  under the terms of the GNU Lesser General Public License as published by
#  the Free Software Foundation; either version 2.1 of the License, or
#  (at your option) any later version.

# See sysctl.d(5) and core(5) for documentation.

# To override settings in this file, create a local file in /etc
# (e.g. /etc/sysctl.d/90-override.conf), and put any assignments
# there.

# System Request functionality of the kernel (SYNC)
#
# Use kernel.sysrq = 1 to allow all keys.
# See https://docs.kernel.org/admin-guide/sysrq.html for a list
# of values and keys.
kernel.sysrq = 0x01b6

# Append the PID to the core filename
kernel.core_uses_pid = 1

# Source route verification
net.ipv4.conf.default.rp_filter = 2
net.ipv4.conf.*.rp_filter = 2
-net.ipv4.conf.all.rp_filter

# Do not accept source routing
net.ipv4.conf.default.accept_source_route = 0
net.ipv4.conf.*.accept_source_route = 0
-net.ipv4.conf.all.accept_source_route

# Promote secondary addresses when the primary address is removed
net.ipv4.conf.default.promote_secondaries = 1
net.ipv4.conf.*.promote_secondaries = 1
-net.ipv4.conf.all.promote_secondaries

# ping(8) without CAP_NET_ADMIN and CAP_NET_RAW
# The upper limit is set to 2^31-1. Values greater than that get rejected by
# the kernel because of this definition in linux/include/net/ping.h:
#   #define GID_T_MAX (((gid_t)~0U) >> 1)
# That's not so bad because values between 2^31 and 2^32-1 are reserved on
# systemd-based systems anyway: https://systemd.io/UIDS-GIDS#summary
-net.ipv4.ping_group_range = 0 2147483647

# Fair Queue CoDel packet scheduler to fight bufferbloat
-net.core.default_qdisc = fq_codel

# Enable hard and soft link protection
fs.protected_hardlinks = 1
fs.protected_symlinks = 1

# Enable regular file and FIFO protection
fs.protected_regular = 2
fs.protected_fifos = 1

Anhang

Siehe auch

@@ Zeile 1: / Zeile 1: @@
-'''topic''' - Beschreibung
+{{DISPLAYTITLE:linux-sysctl-defaults}}
+'''linux-sysctl-defaults''' - Standard-Sysctl-Konfiguration für Linux
 == Beschreibung ==
+Standard-Sysctl-Konfiguration für Linux
+* Einige sinnvolle Standardwerte für Linux
 == Installation ==
-<syntaxhighlight lang="bash" highlight="1" line>
+<syntaxhighlight lang="bash" highlight="1" line copy>
+sudo apt install linux-sysctl-defaults
 </syntaxhighlight>
-== Aufruf ==
-<syntaxhighlight lang="bash" highlight="1" line>
+== Dateien ==
+<syntaxhighlight lang="bash" line copy>
+/usr/lib/sysctl.d/50-default.conf
 </syntaxhighlight>
-=== Optionen ===
-{| class="wikitable sortable options gnu"
-|-
-! Unix !! GNU !! Parameter !! Beschreibung
-|-
-| -1 || --single || || Exit as soon as the first advertisement is received (default)
-|-
-|}
-=== Parameter ===
-=== Umgebungsvariablen ===
-=== Exit-Status ===
-== Anwendung ==
-<syntaxhighlight lang="bash" highlight="1" line>
-</syntaxhighlight>
-=== Problembehebung ===
-== Konfiguration ==
-=== Dateien ===
-{| class="wikitable options"
-|-
-! Datei !! Beschreibung
-|-
-| [[/proc/sys]] ||
-|-
-| [[/etc/sysctl.conf]] ||
-|}
-<noinclude>
-== Anhang ==
-=== Siehe auch ===
-{{Special:PrefixIndex/{{BASEPAGENAME}}}}
-==== Dokumentation ====
-===== Man-Page =====
-===== Info-Pages =====
-==== Links ====
-===== Projekt =====
-===== Weblinks =====
-{{DEFAULTSORT:new}}
+<syntaxhighlight lang="bash" line copy>
-{{DISPLAYTITLE:new}}
+#  This file originated from systemd.
+#
+#  This is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+# See sysctl.d(5) and core(5) for documentation.
+# To override settings in this file, create a local file in /etc
+# (e.g. /etc/sysctl.d/90-override.conf), and put any assignments
+# there.
+# System Request functionality of the kernel (SYNC)
+#
+# Use kernel.sysrq = 1 to allow all keys.
+# See https://docs.kernel.org/admin-guide/sysrq.html for a list
+# of values and keys.
+kernel.sysrq = 0x01b6
+# Append the PID to the core filename
+kernel.core_uses_pid = 1
+# Source route verification
+net.ipv4.conf.default.rp_filter = 2
+net.ipv4.conf.*.rp_filter = 2
+-net.ipv4.conf.all.rp_filter
-[[Kategorie:new]]
+# Do not accept source routing
+net.ipv4.conf.default.accept_source_route = 0
+net.ipv4.conf.*.accept_source_route = 0
+-net.ipv4.conf.all.accept_source_route
-</noinclude>
+# Promote secondary addresses when the primary address is removed
+net.ipv4.conf.default.promote_secondaries = 1
+net.ipv4.conf.*.promote_secondaries = 1
+-net.ipv4.conf.all.promote_secondaries
-= TMP =
+# ping(8) without CAP_NET_ADMIN and CAP_NET_RAW
-'''linux-sysctl-defaults''' - default sysctl configuration for Linux
+# The upper limit is set to 2^31-1. Values greater than that get rejected by
+# the kernel because of this definition in linux/include/net/ping.h:
+#   #define GID_T_MAX (((gid_t)~0U) >> 1)
+# That's not so bad because values between 2^31 and 2^32-1 are reserved on
+# systemd-based systems anyway: https://systemd.io/UIDS-GIDS#summary
+-net.ipv4.ping_group_range = 0 2147483647
-== Beschreibung ==
+# Fair Queue CoDel packet scheduler to fight bufferbloat
-default sysctl configuration for Linux
+-net.core.default_qdisc = fq_codel
-This package contains a sysctl configuration file setting some sensible defaults for Linux.
-== Dateien ==
+# Enable hard and soft link protection
-<syntaxhighlight lang="bash" line>
+fs.protected_hardlinks = 1
-/usr/lib/sysctl.d
+fs.protected_symlinks = 1
-/usr/lib/sysctl.d/50-default.conf
-/usr/share/doc/linux-sysctl-defaults
+# Enable regular file and FIFO protection
-/usr/share/doc/linux-sysctl-defaults/changelog.gz
+fs.protected_regular = 2
-/usr/share/doc/linux-sysctl-defaults/copyright
+fs.protected_fifos = 1
 </syntaxhighlight>
+<noinclude>
+== Anhang ==
+=== Siehe auch ===
+{{Special:PrefixIndex/sysctl}}
+{{SORTIERUNG:linux-sysctl-defaults}}
+[[Kategorie:sysctl]]
 [[Kategorie:Linux/Software/Paket]]
+</noinclude>