diff options
Diffstat (limited to 'core/modules/systemd/data/usr/lib/sysctl.d/50-default.conf')
| -rw-r--r-- | core/modules/systemd/data/usr/lib/sysctl.d/50-default.conf | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/core/modules/systemd/data/usr/lib/sysctl.d/50-default.conf b/core/modules/systemd/data/usr/lib/sysctl.d/50-default.conf new file mode 100644 index 00000000..6ece04ce --- /dev/null +++ b/core/modules/systemd/data/usr/lib/sysctl.d/50-default.conf @@ -0,0 +1,39 @@ +# 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 details. + +# System Request functionality of the kernel (SYNC) +kernel.sysrq = 1 + +# Append the PID to the core filename +kernel.core_uses_pid = 1 + +# Source route verification +net.ipv4.conf.all.rp_filter = 1 +# Do not accept source routing +net.ipv4.conf.all.accept_source_route = 0 +# protection from the SYN flood attack +net.ipv4.tcp_syncookies = 1 +# timestamps add a little overhead but are recommended for gbit links +net.ipv4.tcp_timestamps = 1 +# ignore echo broadcast requests to prevent being part of smurf attacks +net.ipv4.icmp_echo_ignore_broadcasts = 1 +# ignore bogus icmp errors +net.ipv4.icmp_ignore_bogus_error_responses = 1 +# send redirects (not a router, disable it) +net.ipv4.conf.all.send_redirects = 0 +# ICMP routing redirects (only secure) +net.ipv4.conf.all.accept_redirects = 0 +net.ipv4.conf.all.secure_redirects = 1 + +# Enable hard and soft link protection +fs.protected_hardlinks = 1 +fs.protected_symlinks = 1 + +# A little extra security for local exploits +kernel.kptr_restrict = 1 |