diff --git a/src/main/java/de/hsh/inform/orientdb_project/repository/EthernetFrameRepository.java b/src/main/java/de/hsh/inform/orientdb_project/repository/EthernetFrameRepository.java
new file mode 100644
index 0000000..83438d0
--- /dev/null
+++ b/src/main/java/de/hsh/inform/orientdb_project/repository/EthernetFrameRepository.java
@@ -0,0 +1,21 @@
+package de.hsh.inform.orientdb_project.repository;
+
+import java.util.List;
+
+import com.tinkerpop.blueprints.impls.orient.OrientGraphNoTx;
+
+import de.hsh.inform.orientdb_project.model.EthernetFrameModel;
+
+public class EthernetFrameRepository {
+	private OrientGraphNoTx ogf;
+	
+	public EthernetFrameRepository(OrientGraphNoTx ogf) {
+		this.ogf = ogf;
+	}
+	
+	public List<EthernetFrameModel> findAllByRawData(byte[] content) {
+		// TODO!
+		return null;
+	}
+	
+}
diff --git a/src/main/java/de/hsh/inform/orientdb_project/repository/HostRepository.java b/src/main/java/de/hsh/inform/orientdb_project/repository/HostRepository.java
new file mode 100644
index 0000000..f82822c
--- /dev/null
+++ b/src/main/java/de/hsh/inform/orientdb_project/repository/HostRepository.java
@@ -0,0 +1,34 @@
+package de.hsh.inform.orientdb_project.repository;
+
+import java.util.List;
+
+import com.tinkerpop.blueprints.impls.orient.OrientGraphNoTx;
+
+import de.hsh.inform.orientdb_project.model.HostModel;
+
+public class HostRepository {
+
+		private OrientGraphNoTx ogf;
+		
+		public HostRepository(OrientGraphNoTx ogf) {
+			this.ogf = ogf;
+		}
+		
+		public List<HostModel> findByConnectionsTo(String ipAddress, int port) {
+			// TODO!
+			return null;
+		}
+
+		public List<HostModel> findAllByConnectionsToOutsideHosts() {
+			// TODO!
+			return null;
+		}
+
+		
+		public List<HostModel> findByIncomingConnectionOnPort(int port) {
+			return null;
+		}
+		
+
+		
+}
diff --git a/src/main/java/de/hsh/inform/orientdb_project/repository/TcpConnectionRepository.java b/src/main/java/de/hsh/inform/orientdb_project/repository/TcpConnectionRepository.java
index 8a006aa..ff90cdf 100644
--- a/src/main/java/de/hsh/inform/orientdb_project/repository/TcpConnectionRepository.java
+++ b/src/main/java/de/hsh/inform/orientdb_project/repository/TcpConnectionRepository.java
@@ -1,5 +1,7 @@
 package de.hsh.inform.orientdb_project.repository;
 
+import java.util.List;
+
 import com.tinkerpop.blueprints.GraphQuery;
 import com.tinkerpop.blueprints.Predicate;
 import com.tinkerpop.blueprints.Vertex;
@@ -15,7 +17,7 @@ public class TcpConnectionRepository {
 		this.ogf = ogf;
 	}
 	
-	public Object findByActiveWhen(long ts) {
+	public List<TcpConnectionModel> findByActiveWhen(long ts) {
 		GraphQuery gq = this.ogf.query();
 		gq = gq.has("@class", "TcpConnection");
 		
@@ -42,6 +44,11 @@ public class TcpConnectionRepository {
 		}
 		System.out.println("----");
 		return null;
-	} 
+	}
+	
+	public List<TcpConnectionModel> getTotalDataVolumeBetweenHosts(String ipA, String ipB) {
+		// TODO!
+		return null;
+	}
 	
 }