projects / thirdparty / systemd.git / blame
| Commit | Line | Data |
|---|---|---|
| 8f27a221 KS |
1 | # This file is part of systemd. |
| 2 | # | |
| 3 | # systemd is free software; you can redistribute it and/or modify it | |
| 4 | # under the terms of the GNU Lesser General Public License as published by | |
| 5 | # the Free Software Foundation; either version 2.1 of the License, or | |
| 6 | # (at your option) any later version. | |
| 7 | ||
| 61233823 | 8 | # See sysctl.d(5) and core(5) for documentation. |
| 16b65d7f ZJS |
9 | |
| 10 | # To override settings in this file, create a local file in /etc | |
| 11 | # (e.g. /etc/sysctl.d/90-override.conf), and put any assignments | |
| 12 | # there. | |
| 8f27a221 | 13 | |
| 0f59fe51 | 14 | # System Request functionality of the kernel (SYNC) |
| 16b65d7f ZJS |
15 | # |
| 16 | # Use kernel.sysrq = 1 to allow all keys. | |
| bd9bb4ca PK |
17 | # See https://www.kernel.org/doc/html/latest/admin-guide/sysrq.html for a list |
| 18 | # of values and keys. | |
| 0f59fe51 KS |
19 | kernel.sysrq = 16 |
| 20 | ||
| 8f27a221 KS |
21 | # Append the PID to the core filename |
| 22 | kernel.core_uses_pid = 1 | |
| 23 | ||
| 24 | # Source route verification | |
| def94437 | 25 | net.ipv4.conf.default.rp_filter = 2 |
| 5d4fc0e6 ZJS |
26 | net.ipv4.conf.*.rp_filter = 2 |
| 27 | -net.ipv4.conf.all.rp_filter | |
| 8f27a221 KS |
28 | |
| 29 | # Do not accept source routing | |
| def94437 | 30 | net.ipv4.conf.default.accept_source_route = 0 |
| 5d4fc0e6 ZJS |
31 | net.ipv4.conf.*.accept_source_route = 0 |
| 32 | -net.ipv4.conf.all.accept_source_route | |
| 8f27a221 | 33 | |
| ad8bc9ea | 34 | # Promote secondary addresses when the primary address is removed |
| def94437 | 35 | net.ipv4.conf.default.promote_secondaries = 1 |
| 5d4fc0e6 ZJS |
36 | net.ipv4.conf.*.promote_secondaries = 1 |
| 37 | -net.ipv4.conf.all.promote_secondaries | |
| ad8bc9ea | 38 | |
| 0338934f LP |
39 | # ping(8) without CAP_NET_ADMIN and CAP_NET_RAW |
| 40 | # The upper limit is set to 2^31-1. Values greater than that get rejected by | |
| 41 | # the kernel because of this definition in linux/include/net/ping.h: | |
| 42 | # #define GID_T_MAX (((gid_t)~0U) >> 1) | |
| 43 | # That's not so bad because values between 2^31 and 2^32-1 are reserved on | |
| 44 | # systemd-based systems anyway: https://systemd.io/UIDS-GIDS.html#summary | |
| 000500c9 | 45 | -net.ipv4.ping_group_range = 0 2147483647 |
| 0338934f | 46 | |
| e6c253e3 MS |
47 | # Fair Queue CoDel packet scheduler to fight bufferbloat |
| 48 | net.core.default_qdisc = fq_codel | |
| 49 | ||
| 8f27a221 KS |
50 | # Enable hard and soft link protection |
| 51 | fs.protected_hardlinks = 1 | |
| 52 | fs.protected_symlinks = 1 | |
| 27325875 LW |
53 | |
| 54 | # Enable regular file and FIFO protection | |
| 55 | fs.protected_regular = 1 | |
| 56 | fs.protected_fifos = 1 |