[IPV4]: Update icmp sysctl docs and disable broadcast ECHO/TIMESTAMP by default
It's not a good idea to be smurf'able by default.
The few people who need this can turn it on.
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c
index 24eb56a..90dca71 100644
--- a/net/ipv4/icmp.c
+++ b/net/ipv4/icmp.c
@@ -188,7 +188,7 @@
/* Control parameters for ECHO replies. */
int sysctl_icmp_echo_ignore_all;
-int sysctl_icmp_echo_ignore_broadcasts;
+int sysctl_icmp_echo_ignore_broadcasts = 1;
/* Control parameter - ignore bogus broadcast responses? */
int sysctl_icmp_ignore_bogus_error_responses;