added alternative version of SurfTab Twin

[thirdparty/systemd.git] / sysctl.d / 50-default.conf

diff --git a/sysctl.d/50-default.conf b/sysctl.d/50-default.conf
index 27084f62424bf2cf3407c7a1a6bcc6bed2aa15b9..14378b24af10b4e57bc9094ef7a3dee4d5d397f3 100644 (file)
--- a/sysctl.d/50-default.conf
+++ b/sysctl.d/50-default.conf
@@ -22,13 +22,27 @@ kernel.sysrq = 16
 kernel.core_uses_pid = 1
 
 # Source route verification
-net.ipv4.conf.all.rp_filter = 2
+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.all.accept_source_route = 0
+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.all.promote_secondaries = 1
+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.html#summary
+-net.ipv4.ping_group_range = 0 2147483647
 
 # Fair Queue CoDel packet scheduler to fight bufferbloat
 net.core.default_qdisc = fq_codel