diff --git a/service/service.go b/service/service.go
index aa59e30..32108e5 100644
--- a/service/service.go
+++ b/service/service.go
@@ -29,6 +29,8 @@ import (
 )
 
 var (
+	AllMatchers []matcher.Matcher
+
 	TCPMatchers []matcher.Matcher
 	UDPMatchers []matcher.UDPMatcher
 
@@ -38,64 +40,62 @@ var (
 
 func init() {
 	//TCP
-	TCPMatchers = append(TCPMatchers, smtp.NewMatcher())
-	TCPMatchers = append(TCPMatchers, ldap.NewMatcher())
-	TCPMatchers = append(TCPMatchers, activedirectory.NewMatcher())
-	TCPMatchers = append(TCPMatchers, mongodb.NewMatcher())
-	TCPMatchers = append(TCPMatchers, mysql.NewMatcher())
-	TCPMatchers = append(TCPMatchers, mssql.NewMatcher())
-	TCPMatchers = append(TCPMatchers, redis.NewMatcher())
-	TCPMatchers = append(TCPMatchers, redis_protected.NewMatcher())
-	TCPMatchers = append(TCPMatchers, netbios.NewMatcher())
-	TCPMatchers = append(TCPMatchers, smb.NewMatcher())
-	TCPMatchers = append(TCPMatchers, cassandra.NewMatcher())
-	TCPMatchers = append(TCPMatchers, imap.NewMatcher())
-	TCPMatchers = append(TCPMatchers, oracle.NewMatcher())
-	TCPMatchers = append(TCPMatchers, pop.NewMatcher())
-	TCPMatchers = append(TCPMatchers, wmi.NewMatcher())
-	TCPMatchers = append(TCPMatchers, ftp.NewMatcher())
-	TCPMatchers = append(TCPMatchers, http.NewMatcher())
-	TCPMatchers = append(TCPMatchers, rmi.NewMatcher())
-	TCPMatchers = append(TCPMatchers, ssh.NewMatcher())
-	TCPMatchers = append(TCPMatchers, telnet.NewMatcher())
+	registerTCPMatcher(smtp.NewMatcher())
+	registerTCPMatcher(ldap.NewMatcher())
+	registerTCPMatcher(activedirectory.NewMatcher())
+	registerTCPMatcher(mongodb.NewMatcher())
+	registerTCPMatcher(mysql.NewMatcher())
+	registerTCPMatcher(mssql.NewMatcher())
+	registerTCPMatcher(redis.NewMatcher())
+	registerTCPMatcher(redis_protected.NewMatcher())
+	registerTCPMatcher(netbios.NewMatcher())
+	registerTCPMatcher(smb.NewMatcher())
+	registerTCPMatcher(cassandra.NewMatcher())
+	registerTCPMatcher(imap.NewMatcher())
+	registerTCPMatcher(oracle.NewMatcher())
+	registerTCPMatcher(pop.NewMatcher())
+	registerTCPMatcher(wmi.NewMatcher())
+	registerTCPMatcher(ftp.NewMatcher())
+	registerTCPMatcher(http.NewMatcher())
+	registerTCPMatcher(rmi.NewMatcher())
+	registerTCPMatcher(ssh.NewMatcher())
+	registerTCPMatcher(telnet.NewMatcher())
 
-	UDPMatchers = append(UDPMatchers, dns.NewMatcher())
-	UDPMatchers = append(UDPMatchers, snmp_v2.NewMatcher())
-	UDPMatchers = append(UDPMatchers, snmp_v3.NewMatcher())
+	// UDP
+	registerUDPMatcher(dns.NewMatcher())
+	registerUDPMatcher(snmp_v2.NewMatcher())
+	registerUDPMatcher(snmp_v3.NewMatcher())
+}
+
+func registerTCPMatcher(m matcher.Matcher) {
+	AllMatchers = append(AllMatchers, m)
+	TCPMatchers = append(TCPMatchers, m)
+	if m.IsPrePacket() {
+		TCPPrePacketMatchers = append(TCPPrePacketMatchers, m)
+	} else {
+		TCPNotPrePacketMatchers = append(TCPNotPrePacketMatchers, m)
+	}
+}
+
+func registerUDPMatcher(m matcher.UDPMatcher) {
+	AllMatchers = append(AllMatchers, m)
+	UDPMatchers = append(UDPMatchers, m)
 }
 
 func GetTCPMatchers(ispre bool) []matcher.Matcher {
-
-	retMatchers := make([]matcher.Matcher, 0)
-	l := len(TCPMatchers)
-	for i := 0; i < l; i++ {
-		c := TCPMatchers[i].IsPrePacket()
-		if c == ispre {
-			retMatchers = append(retMatchers, TCPMatchers[i])
-		}
+	if ispre {
+		return TCPPrePacketMatchers
 	}
 
-	return retMatchers
+	return TCPNotPrePacketMatchers
 }
 
 func GetUDPMatchers() []matcher.UDPMatcher {
-
-	retMatchers := make([]matcher.UDPMatcher, 0)
-	l := len(UDPMatchers)
-	for i := 0; i < l; i++ {
-		retMatchers = append(retMatchers, UDPMatchers[i])
-	}
-
-	return retMatchers
+	return UDPMatchers
 }
 
 func GetMatcherByName(serName string) Matcher {
-	for _, m := range TCPMatchers {
-		if m.ServiceName() == serName {
-			return m
-		}
-	}
-	for _, m := range UDPMatchers {
+	for _, m := range AllMatchers {
 		if m.ServiceName() == serName {
 			return m
 		}