2013-03-15 16:11:56 +01:00
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# This file is part of systemd.
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#
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# systemd is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 2.1 of the License, or
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# (at your option) any later version.
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2016-07-10 14:48:23 +02:00
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# See sysctl.d(5) and core(5) for documentation.
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2015-02-27 01:05:51 +01:00
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# To override settings in this file, create a local file in /etc
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# (e.g. /etc/sysctl.d/90-override.conf), and put any assignments
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# there.
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2013-03-15 16:11:56 +01:00
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2013-03-15 19:30:53 +01:00
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# System Request functionality of the kernel (SYNC)
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2015-02-27 01:05:51 +01:00
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#
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# Use kernel.sysrq = 1 to allow all keys.
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2017-02-08 19:42:43 +01:00
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# See https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html for a list
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# of values and keys.
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2013-03-15 19:30:53 +01:00
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kernel.sysrq = 16
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2013-03-15 16:11:56 +01:00
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# Append the PID to the core filename
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kernel.core_uses_pid = 1
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# Source route verification
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2014-08-15 12:07:33 +02:00
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net.ipv4.conf.all.rp_filter = 1
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2013-03-15 16:11:56 +01:00
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# Do not accept source routing
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2014-08-15 12:07:33 +02:00
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net.ipv4.conf.all.accept_source_route = 0
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2013-03-15 16:11:56 +01:00
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2014-07-25 11:08:23 +02:00
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# Promote secondary addresses when the primary address is removed
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2014-08-15 12:07:33 +02:00
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net.ipv4.conf.all.promote_secondaries = 1
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2014-07-25 11:08:23 +02:00
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2014-10-16 13:49:04 +02:00
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# Fair Queue CoDel packet scheduler to fight bufferbloat
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net.core.default_qdisc = fq_codel
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2018-05-31 13:30:10 +02:00
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# Request Explicit Congestion Notification (ECN) on both in and outgoing connections
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net.ipv4.tcp_ecn = 1
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2013-03-15 16:11:56 +01:00
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# Enable hard and soft link protection
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fs.protected_hardlinks = 1
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fs.protected_symlinks = 1
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