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-rw-r--r--factory-default/sys-apps/baselayout/etc/sysctl.conf4
1 files changed, 4 insertions, 0 deletions
diff --git a/factory-default/sys-apps/baselayout/etc/sysctl.conf b/factory-default/sys-apps/baselayout/etc/sysctl.conf
index f2e5bd0d..21a5fabf 100644
--- a/factory-default/sys-apps/baselayout/etc/sysctl.conf
+++ b/factory-default/sys-apps/baselayout/etc/sysctl.conf
@@ -151,6 +151,10 @@ net.ipv4.icmp_echo_ignore_broadcasts = 1
# Ignore bogus responses to broadcast
net.ipv4.icmp_ignore_bogus_error_responses = 1
+# Rate limit ICMP packets to 4 per second
+net.ipv4.icmp_ratemask = 0xFFFF
+net.ipv4.icmp_ratelimit = 25
+
# Enable SYN cookies
net.ipv4.tcp_syncookies = 1