| # 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://www.kernel.org/doc/html/latest/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.all.rp_filter = 2 |
| |
| # Do not accept source routing |
| net.ipv4.conf.all.accept_source_route = 0 |
| |
| # Promote secondary addresses when the primary address is removed |
| net.ipv4.conf.all.promote_secondaries = 1 |
| |
| # 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 |