Adding upstream version 252.22.upstream/252.22upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 56 insertions, 0 deletions

diff --git a/sysctl.d/50-default.conf b/sysctl.d/50-default.conf
new file mode 100644
index 0000000..69de91a
--- /dev/null
+++ b/sysctl.d/50-default.conf
@@ -0,0 +1,56 @@
+#  This file is part of systemd.
+#
+#  systemd 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 = 16
+
+# 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 = 1
+fs.protected_fifos = 1