From 0aca737d4623b7b791b4b1e5f9b015fff5f7180c Mon Sep 17 00:00:00 2001 From: "David S. Miller" Date: Mon, 8 Feb 2016 04:24:33 -0500 Subject: [PATCH] tcp: Fix syncookies sysctl default. Unintentionally the default was changed to zero, fix that. Fixes: 12ed8244ed ("ipv4: Namespaceify tcp syncookies sysctl knob") Signed-off-by: David S. Miller --- net/ipv4/tcp_ipv4.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c index 11ae706f53a1..0d381fa164f8 100644 --- a/net/ipv4/tcp_ipv4.c +++ b/net/ipv4/tcp_ipv4.c @@ -2389,7 +2389,7 @@ static int __net_init tcp_sk_init(struct net *net) net->ipv4.sysctl_tcp_syn_retries = TCP_SYN_RETRIES; net->ipv4.sysctl_tcp_synack_retries = TCP_SYNACK_RETRIES; - net->ipv4.sysctl_tcp_syncookies = 0; + net->ipv4.sysctl_tcp_syncookies = 1; net->ipv4.sysctl_tcp_reordering = TCP_FASTRETRANS_THRESH; net->ipv4.sysctl_tcp_retries1 = TCP_RETR1; net->ipv4.sysctl_tcp_retries2 = TCP_RETR2; -- 2.20.1