diff --git a/initscripts-config/source-debian/sysctl.conf b/initscripts-config/source-debian/sysctl.conf
index f12c242..fa7eabf 100644
--- a/initscripts-config/source-debian/sysctl.conf
+++ b/initscripts-config/source-debian/sysctl.conf
@@ -23,7 +23,7 @@ net.ipv4.conf.default.rp_filter=1
 net.ipv4.conf.all.rp_filter=1
 
 # Uncomment the next line to enable TCP/IP SYN cookies
-#net.ipv4.tcp_syncookies=1
+net.ipv4.tcp_syncookies=1
 
 # Uncomment the next line to enable packet forwarding for IPv4
 #net.ipv4.ip_forward=1
@@ -40,7 +40,7 @@ net.ipv4.conf.all.rp_filter=1
 # settings are disabled so review and enable them as needed.
 #
 # Ignore ICMP broadcasts
-#net.ipv4.icmp_echo_ignore_broadcasts = 1
+net.ipv4.icmp_echo_ignore_broadcasts = 1
 #
 # Set the runtime status of the net.ipv4.icmp_ignore_bogus_error_responses
 # kernel parameter to enable Kernel Parameter to Ignore Bogus ICMP Error
@@ -64,7 +64,7 @@ net.ipv4.conf.all.secure_redirects = 0
 net.ipv4.conf.all.send_redirects = 0
 #
 # Do not accept IP source route packets (we are not a router)
-#net.ipv4.conf.all.accept_source_route = 0
+net.ipv4.conf.all.accept_source_route = 0
 net.ipv6.conf.all.accept_source_route = 0
 #
 # Log Martian Packets