X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=config%2Fetc%2Fsysctl.conf;h=4066af767b2876eefbb87f872f5342cf5c78e705;hb=aba59b7c7664f83e0b07a8fa0dc1f133d3fe55d3;hp=105feaa0acd34872c9a8982f36840a7e05281fa8;hpb=74459c0aded2cceae19e1bff2ce9a899cf0168c0;p=people%2Fpmueller%2Fipfire-2.x.git

diff --git a/config/etc/sysctl.conf b/config/etc/sysctl.conf
index 105feaa0ac..4066af767b 100644
--- a/config/etc/sysctl.conf
+++ b/config/etc/sysctl.conf
@@ -1,7 +1,13 @@
 net.ipv4.ip_forward = 1
 net.ipv4.ip_dynaddr = 1
+
+# Disable Path MTU Discovery
+net.ipv4.ip_no_pmtu_disc = 1
+
 net.ipv4.icmp_echo_ignore_broadcasts = 1
 net.ipv4.icmp_ignore_bogus_error_responses = 1
+net.ipv4.icmp_ratelimit = 1000
+net.ipv4.icmp_ratemask = 6168
 
 net.ipv4.tcp_syncookies = 1
 net.ipv4.tcp_fin_timeout = 30
@@ -21,5 +27,24 @@ net.ipv4.conf.all.accept_source_route = 0
 net.ipv4.conf.all.log_martians = 1
 
 kernel.printk = 1 4 1 7
-vm.swappiness=0
+vm.swappiness=1
 vm.mmap_min_addr = 4096
+vm.min_free_kbytes = 8192
+
+# Disable IPv6 by default.
+net.ipv6.conf.all.disable_ipv6 = 1
+net.ipv6.conf.default.disable_ipv6 = 1
+
+# Enable netfilter accounting
+net.netfilter.nf_conntrack_acct=1
+
+# Disable netfilter on bridges.
+net.bridge.bridge-nf-call-ip6tables = 0
+net.bridge.bridge-nf-call-iptables = 0
+net.bridge.bridge-nf-call-arptables = 0
+
+# Try to keep kernel address exposures out of various /proc files (kallsyms, modules, etc).
+kernel.kptr_restrict = 2
+
+# Avoid kernel memory address exposures via dmesg.
+kernel.dmesg_restrict = 1