X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=config%2Fetc%2Fsysctl.conf;h=4066af767b2876eefbb87f872f5342cf5c78e705;hb=e9dbafa8a13e695a2d257f44d1e66468847aa891;hp=b2934577ee2ced4251a289f958ff8369cdf78aea;hpb=ecd0ac08a56363fd779bcd08d70a4720f99a33db;p=people%2Fpmueller%2Fipfire-2.x.git

diff --git a/config/etc/sysctl.conf b/config/etc/sysctl.conf
index b2934577ee..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
@@ -21,6 +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