diff --git a/discovery/ipv4/port.go b/discovery/ipv4/port.go
new file mode 100644
index 0000000..11f7999
--- /dev/null
+++ b/discovery/ipv4/port.go
@@ -0,0 +1,7 @@
+package ipv4
+
+import "git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+
+func ScanPort(host *model.Host, dp *model.DiscoveryPort, resultChan chan interface{}, errChan chan error, doneChan chan<- struct{}) {
+
+}
diff --git a/discovery/ipv6/port.go b/discovery/ipv6/port.go
new file mode 100644
index 0000000..e4332c1
--- /dev/null
+++ b/discovery/ipv6/port.go
@@ -0,0 +1,7 @@
+package ipv6
+
+import "git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+
+func ScanPort(host *model.Host, dp *model.DiscoveryPort, resultChan chan interface{}, errChan chan error, doneChan chan<- struct{}) {
+
+}
diff --git a/discovery/port.go b/discovery/port.go
index e1af3c3..ef0459f 100644
--- a/discovery/port.go
+++ b/discovery/port.go
@@ -1,7 +1,30 @@
 package discovery
 
-import "git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+import (
+	"fmt"
+	"net"
+
+	"git.loafle.net/overflow/overflow_discovery/api/module/discovery/model"
+	"git.loafle.net/overflow/overflow_discovery/discovery/ipv4"
+	"git.loafle.net/overflow/overflow_discovery/discovery/ipv6"
+)
 
 func scanPort(host *model.Host, dp *model.DiscoveryPort, resultChan chan interface{}, errChan chan error, doneChan chan<- struct{}) {
-	doneChan <- struct{}{}
+	_, ipNet, err := net.ParseCIDR(host.Zone.Network)
+	if nil != err {
+		errChan <- err
+		doneChan <- struct{}{}
+		return
+	}
+	switch len(ipNet.IP) {
+	case net.IPv4len:
+		ipv4.ScanPort(host, dp, resultChan, errChan, doneChan)
+	case net.IPv6len:
+		ipv6.ScanPort(host, dp, resultChan, errChan, doneChan)
+
+	default:
+		errChan <- fmt.Errorf("Discovery: Not supported ip length")
+		doneChan <- struct{}{}
+		return
+	}
 }