diff --git a/README.md b/README.md
index 2d31e70..2097924 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,7 @@ WSL2-forwarding-port-cli is command line tools for wsl2 forwarding port configur
 1. Open WSL2 with Run Administrator
 2. Download the binary with the command 
 ```
-    curl -LO https://github.com/mrzack99s/wsl2-forwarding-port-cli/releases/download/v1.0.0/wfp-cli
+    curl -LO https://github.com/mrzack99s/wsl2-forwarding-port-cli/releases/download/v1.1.0/wfp-cli
 ```
 3. Make the kubectl binary executable.
 ```
diff --git a/cmds/lists.go b/cmds/lists.go
index 07d453b..1cb330d 100644
--- a/cmds/lists.go
+++ b/cmds/lists.go
@@ -7,11 +7,12 @@ import (
 )
 
 func Lists() {
-	fmt.Printf("%-10s%-15s%-10s%-10s%-10s\n", "ID", "WSL2 IPADDR", "PROTOCOL", "SPORT", "DPORT")
-	fmt.Println("-------------------------------------------------------")
+	fmt.Println("--------------------------------------------------------------------")
+	fmt.Printf("%-10s%-22s%-12s%-12s%-12s\n", "ID", "WSL2 IPADDR", "PROTOCOL", "SPORT", "DPORT")
+	fmt.Println("--------------------------------------------------------------------")
 	if len(configs.RulesTable.Rules) > 0 {
 		for _, rule := range configs.RulesTable.Rules {
-			fmt.Printf("%-10s%-15s%-10s%-10s%-10s\n", rule.Id, rule.IpAddress, rule.Protocol, rule.SourcePort, rule.DestinationPort)
+			fmt.Printf("%-10s%-22s%-10s%-10s%-10s\n", rule.Id, rule.IpAddress, rule.Protocol, rule.SourcePort, rule.DestinationPort)
 		}
 	}
 
diff --git a/main.go b/main.go
index 96844ff..a865280 100644
--- a/main.go
+++ b/main.go
@@ -43,7 +43,7 @@ func asSha256(o interface{}) string {
 	return fmt.Sprintf("%x", h.Sum(nil))
 }
 
-func checkAlreadyRule(id string) bool {
+func checkAlreadyRuleByID(id string) bool {
 	for _, rule := range configs.RulesTable.Rules {
 		if id == rule.Id {
 			return true
@@ -52,6 +52,15 @@ func checkAlreadyRule(id string) bool {
 	return false
 }
 
+func checkAlreadyRuleBySPortAndProto(port string, proto string) bool {
+	for _, rule := range configs.RulesTable.Rules {
+		if port == rule.SourcePort && proto == rule.Protocol {
+			return true
+		}
+	}
+	return false
+}
+
 func main() {
 
 	if len(os.Args) < 2 {
@@ -105,7 +114,7 @@ func main() {
 		hash := asSha256(rule)
 		substringhash := hash[:8]
 
-		if !checkAlreadyRule(substringhash) {
+		if !checkAlreadyRuleByID(substringhash) && !checkAlreadyRuleBySPortAndProto(rule.SourcePort, rule.Protocol) {
 			status := cmds.CreateRule(createArgs, ip)
 			if status {
 				rule.Id = substringhash
@@ -123,7 +132,7 @@ func main() {
 
 			id := os.Args[2]
 
-			if checkAlreadyRule(id) {
+			if checkAlreadyRuleByID(id) {
 				index, status := cmds.DeleteRule(id)
 				if status {
 					length := len(configs.RulesTable.Rules)