diff --git a/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua b/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
index 58ed67845..37da3ef79 100644
--- a/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
+++ b/luci-app-openmptcprouter/luasrc/controller/openmptcprouter.lua
@@ -463,6 +463,11 @@ function settings_add()
 	local tcp_fin_timeout = luci.http.formvalue("tcp_fin_timeout")
 	luci.sys.exec("sysctl -w net.ipv4.tcp_fin_timeout=%s" % tcp_fin_timeout)
 	luci.sys.exec("sed -i 's:^net.ipv4.tcp_fin_timeout=[0-9]*:net.ipv4.tcp_fin_timeout=%s:' /etc/sysctl.d/zzz_openmptcprouter.conf" % tcp_fin_timeout)
+
+	-- Set tcp_syn_retries
+	local tcp_syn_retries = luci.http.formvalue("tcp_syn_retries")
+	luci.sys.exec("sysctl -w net.ipv4.tcp_syn_retries=%s" % tcp_syn_retries)
+	luci.sys.exec("sed -i 's:^net.ipv4.tcp_syn_retries=[0-9]*:net.ipv4.tcp_syn_retries=%s:' /etc/sysctl.d/zzz_openmptcprouter.conf" % tcp_syn_retries)
 	
 	-- Disable IPv6
 	local disable_ipv6 = luci.http.formvalue("disable_ipv6") or 0
diff --git a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/settings.htm b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/settings.htm
index 2e563cca8..57485d529 100644
--- a/luci-app-openmptcprouter/luasrc/view/openmptcprouter/settings.htm
+++ b/luci-app-openmptcprouter/luasrc/view/openmptcprouter/settings.htm
@@ -82,6 +82,12 @@
 		    <input type="text" name="tcp_fin_timeout" class="cbi-input-text" value="<%=tonumber((luci.sys.exec("sysctl net.ipv4.tcp_fin_timeout")):match(" %d+"))%>">
 		</div>
 	    </div>
+	    <div class="cbi-value">
+	        <label class="cbi-value-title"><%:IPv4 TCP SYN retries%></label>
+	        <div class="cbi-value-field">
+		    <input type="text" name="tcp_syn_retries" class="cbi-input-text" value="<%=tonumber((luci.sys.exec("sysctl net.ipv4.tcp_syn_retries")):match(" %d+"))%>">
+		</div>
+	    </div>
 	    <div class="cbi-value">
 		<label class="cbi-value-title"><%:Disable IPv6%></label>
 		<div class="cbi-value-field">
diff --git a/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter b/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
index e5ec7edf6..647a2f36f 100755
--- a/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
+++ b/luci-app-openmptcprouter/root/etc/init.d/openmptcprouter
@@ -78,8 +78,8 @@ start_service() {
 		set_ipv6_state $disable_ipv6
 	fi
 	# remove sysctl already defined in /etc/sysctl.d/
-	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' /etc/sysctl.conf
-	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' /etc/sysctl.d/10-default.conf
+	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' -e '/tcp_syn_retries/d' /etc/sysctl.conf
+	sed -i -e '/tcp_fin_timeout/d' -e '/tcp_keepalive_time/d' -e '/nf_conntrack_max/d' -e '/tcp_syn_retries/d' /etc/sysctl.d/10-default.conf
 }
 
 reload_service() {
diff --git a/luci-app-openmptcprouter/root/etc/sysctl.d/zzz_openmptcprouter.conf b/luci-app-openmptcprouter/root/etc/sysctl.d/zzz_openmptcprouter.conf
index 6f19bb344..6d5519cc4 100644
--- a/luci-app-openmptcprouter/root/etc/sysctl.d/zzz_openmptcprouter.conf
+++ b/luci-app-openmptcprouter/root/etc/sysctl.d/zzz_openmptcprouter.conf
@@ -1,3 +1,4 @@
 net.ipv4.tcp_keepalive_time=7200
 net.ipv6.conf.all.disable_ipv6=0
-net.ipv4.tcp_fin_timeout=40
\ No newline at end of file
+net.ipv4.tcp_fin_timeout=40
+net.ipv4.tcp_syn_retries=3
\ No newline at end of file