diff --git a/configs/kernel-vuduo4k.config b/configs/kernel-vuduo4k.config
index 6def4eb4..c73d2c0f 100644
--- a/configs/kernel-vuduo4k.config
+++ b/configs/kernel-vuduo4k.config
@@ -707,7 +707,7 @@ CONFIG_NET_IP_TUNNEL=m
 CONFIG_IP_MROUTE=y
 CONFIG_IP_PIMSM_V1=y
 CONFIG_IP_PIMSM_V2=y
-# CONFIG_SYN_COOKIES is not set
+CONFIG_SYN_COOKIES=y
 # CONFIG_NET_UDP_TUNNEL is not set
 # CONFIG_NET_FOU is not set
 # CONFIG_NET_FOU_IP_TUNNELS is not set
diff --git a/configs/kernel-vuuno4kse.config b/configs/kernel-vuuno4kse.config
index 663e193d..865196f0 100644
--- a/configs/kernel-vuuno4kse.config
+++ b/configs/kernel-vuuno4kse.config
@@ -701,7 +701,7 @@ CONFIG_IP_PNP_RARP=y
 # CONFIG_NET_IPGRE_DEMUX is not set
 CONFIG_NET_IP_TUNNEL=m
 # CONFIG_IP_MROUTE is not set
-# CONFIG_SYN_COOKIES is not set
+CONFIG_SYN_COOKIES=y
 # CONFIG_NET_IPVTI is not set
 CONFIG_NET_UDP_TUNNEL=m
 CONFIG_NET_FOU=m
diff --git a/configs/kernel-vuzero4k.config b/configs/kernel-vuzero4k.config
index 51793b6f..4ea8bd16 100644
--- a/configs/kernel-vuzero4k.config
+++ b/configs/kernel-vuzero4k.config
@@ -701,7 +701,7 @@ CONFIG_IP_PNP_RARP=y
 # CONFIG_NET_IPGRE_DEMUX is not set
 CONFIG_NET_IP_TUNNEL=m
 # CONFIG_IP_MROUTE is not set
-# CONFIG_SYN_COOKIES is not set
+CONFIG_SYN_COOKIES=y
 # CONFIG_NET_IPVTI is not set
 CONFIG_NET_UDP_TUNNEL=m
 CONFIG_NET_FOU=m