X-Git-Url: http://git.ipfire.org/?p=ipfire-2.x.git;a=blobdiff_plain;f=config%2Fetc%2Fsysctl.conf;h=46ab4e1d4ad9850958c0e665411aadc4529a50a7;hp=d6a2f75048123728f5b44b7a245d200761e67c5f;hb=9b86a7ec28bd2a2049e771b59dff817c0569e106;hpb=3bf58b324c24be0a43b15a55304958b6e02937fb

diff --git a/config/etc/sysctl.conf b/config/etc/sysctl.conf
index d6a2f75048..46ab4e1d4a 100644
--- a/config/etc/sysctl.conf
+++ b/config/etc/sysctl.conf
@@ -1,7 +1,10 @@
 net.ipv4.ip_forward = 1
 net.ipv4.ip_dynaddr = 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
@@ -21,7 +24,7 @@ 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
 
@@ -31,3 +34,14 @@ 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