syncookies: remove Kconfig text line about disabled-by-default

syncookies default to on since
e994b7c901ded7200b525a707c6da71f2cf6d4bb
(tcp: Don't make syn cookies initial setting depend on CONFIG_SYSCTL).

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig
index 8e3a1fd938ab3c2f18a8f9884598858b2020cd88..7c3a7d19124995fd89034a4db2254566aab4cdfd 100644 (file)
--- a/net/ipv4/Kconfig
+++ b/net/ipv4/Kconfig
@@ -303,7 +303,7 @@ config ARPD
          If unsure, say N.
 
 config SYN_COOKIES
-       bool "IP: TCP syncookie support (disabled per default)"
+       bool "IP: TCP syncookie support"
        ---help---
          Normal TCP/IP networking is open to an attack known as "SYN
          flooding". This denial-of-service attack prevents legitimate remote
@@ -328,13 +328,13 @@ config SYN_COOKIES
          server is really overloaded. If this happens frequently better turn
          them off.
 
-         If you say Y here, note that SYN cookies aren't enabled by default;
-         you can enable them by saying Y to "/proc file system support" and
+         If you say Y here, you can disable SYN cookies at run time by
+         saying Y to "/proc file system support" and
          "Sysctl support" below and executing the command
 
-         echo 1 >/proc/sys/net/ipv4/tcp_syncookies
+         echo 0 > /proc/sys/net/ipv4/tcp_syncookies
 
-         at boot time after the /proc file system has been mounted.
+         after the /proc file system has been mounted.
 
          If unsure, say N.