diff --git a/shadowsocks-libev/files/shadowsocks.conf b/shadowsocks-libev/files/shadowsocks.conf
index 159ea3860..9c6f64727 100644
--- a/shadowsocks-libev/files/shadowsocks.conf
+++ b/shadowsocks-libev/files/shadowsocks.conf
@@ -23,6 +23,8 @@ net.ipv4.tcp_tw_reuse = 1
 #net.ipv4.tcp_tw_recycle = 0
 # short FIN timeout
 #net.ipv4.tcp_fin_timeout = 60
+# increase max orphans
+net.ipv4.tcp_max_orphans = 16384
 # short keepalive time
 #net.ipv4.tcp_keepalive_time = 2400
 # outbound port range