# 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 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 http://fedoraproject.org/wiki/QA/Sysrq for a list of values and keys. kernel.sysrq = 16 # Append the PID to the core filename kernel.core_uses_pid = 1 # https://bugzilla.redhat.com/show_bug.cgi?id=1689344 kernel.kptr_restrict = 1 # Source route verification net.ipv4.conf.default.rp_filter = 1 net.ipv4.conf.all.rp_filter = 1 # Do not accept source routing net.ipv4.conf.default.accept_source_route = 0 net.ipv4.conf.all.accept_source_route = 0 # Promote secondary addresses when the primary address is removed net.ipv4.conf.default.promote_secondaries = 1 net.ipv4.conf.all.promote_secondaries = 1 # Enable hard and soft link protection fs.protected_hardlinks = 1 fs.protected_symlinks = 1