diff --git a/src/main/java/com/raoulvdberge/refinedstorage/block/BlockBase.java b/src/main/java/com/raoulvdberge/refinedstorage/block/BlockBase.java
index 69715346a..dcddaf52d 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/block/BlockBase.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/block/BlockBase.java
@@ -12,6 +12,7 @@ import net.minecraft.block.material.Material;
 import net.minecraft.block.properties.PropertyDirection;
 import net.minecraft.block.state.BlockStateContainer;
 import net.minecraft.block.state.IBlockState;
+import net.minecraft.entity.Entity;
 import net.minecraft.entity.player.EntityPlayer;
 import net.minecraft.inventory.InventoryHelper;
 import net.minecraft.item.Item;
@@ -158,6 +159,25 @@ public abstract class BlockBase extends Block {
         return true;
     }
 
+    @Override
+    public boolean canEntityDestroy(IBlockState state, IBlockAccess world, BlockPos pos, Entity entity) {
+        TileEntity tile = world.getTileEntity(pos);
+
+        if (tile != null && tile.hasCapability(CapabilityNetworkNode.NETWORK_NODE_CAPABILITY, null)) {
+            INetworkNode node = tile.getCapability(CapabilityNetworkNode.NETWORK_NODE_CAPABILITY, null);
+
+            if (node.getNetwork() != null) {
+                if (!(entity instanceof EntityPlayer)) {
+                    return false;
+                }
+
+                return node.getNetwork().getSecurityManager().hasPermission(Permission.BUILD, (EntityPlayer) entity);
+            }
+        }
+
+        return super.canEntityDestroy(state, world, pos, entity);
+    }
+
     public EnumPlacementType getPlacementType() {
         return EnumPlacementType.HORIZONTAL;
     }
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/block/BlockSecurityManager.java b/src/main/java/com/raoulvdberge/refinedstorage/block/BlockSecurityManager.java
index 4481734d1..1cfc498b1 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/block/BlockSecurityManager.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/block/BlockSecurityManager.java
@@ -45,4 +45,9 @@ public class BlockSecurityManager extends BlockNode {
 
         return true;
     }
+
+    @Override
+    public boolean hasConnectivityState() {
+        return true;
+    }
 }
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/proxy/ProxyClient.java b/src/main/java/com/raoulvdberge/refinedstorage/proxy/ProxyClient.java
index 0a54a3551..347dc778a 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/proxy/ProxyClient.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/proxy/ProxyClient.java
@@ -153,6 +153,7 @@ public class ProxyClient extends ProxyCommon {
         ModelLoader.setCustomModelResourceLocation(RSItems.GRID_FILTER, 0, new ModelResourceLocation("refinedstorage:grid_filter", "inventory"));
         ModelLoader.setCustomModelResourceLocation(RSItems.NETWORK_CARD, 0, new ModelResourceLocation("refinedstorage:network_card", "inventory"));
         ModelLoader.setCustomModelResourceLocation(RSItems.WRENCH, 0, new ModelResourceLocation("refinedstorage:wrench", "inventory"));
+        ModelLoader.setCustomModelResourceLocation(RSItems.SECURITY_CARD, 0, new ModelResourceLocation("refinedstorage:security_card", "inventory"));
 
         ModelLoader.setCustomModelResourceLocation(RSItems.UPGRADE, 0, new ModelResourceLocation("refinedstorage:upgrade", "inventory"));
         ModelLoader.setCustomModelResourceLocation(RSItems.UPGRADE, ItemUpgrade.TYPE_RANGE, new ModelResourceLocation("refinedstorage:range_upgrade", "inventory"));
@@ -204,6 +205,7 @@ public class ProxyClient extends ProxyCommon {
         ModelLoader.setCustomModelResourceLocation(Item.getItemFromBlock(RSBlocks.FLUID_STORAGE), EnumFluidStorageType.TYPE_512K.getId(), new ModelResourceLocation("refinedstorage:fluid_storage", "type=512k"));
         ModelLoader.setCustomModelResourceLocation(Item.getItemFromBlock(RSBlocks.FLUID_STORAGE), EnumFluidStorageType.TYPE_CREATIVE.getId(), new ModelResourceLocation("refinedstorage:fluid_storage", "type=creative"));
         ModelLoader.setCustomModelResourceLocation(Item.getItemFromBlock(RSBlocks.DISK_MANIPULATOR), 0, new ModelResourceLocation("refinedstorage:disk_manipulator", "inventory"));
+        ModelLoader.setCustomModelResourceLocation(Item.getItemFromBlock(RSBlocks.SECURITY_MANAGER), 0, new ModelResourceLocation("refinedstorage:security_manager", "inventory"));
 
         ModelLoaderRegistry.registerLoader(new ICustomModelLoader() {
             @Override
diff --git a/src/main/java/com/raoulvdberge/refinedstorage/tile/TileSecurityManager.java b/src/main/java/com/raoulvdberge/refinedstorage/tile/TileSecurityManager.java
index 4cd757440..15e237ba3 100755
--- a/src/main/java/com/raoulvdberge/refinedstorage/tile/TileSecurityManager.java
+++ b/src/main/java/com/raoulvdberge/refinedstorage/tile/TileSecurityManager.java
@@ -163,4 +163,9 @@ public class TileSecurityManager extends TileNode implements ISecurityCardContai
     public IItemHandler getDrops() {
         return new CombinedInvWrapper(cards, editCard);
     }
+
+    @Override
+    public boolean hasConnectivityState() {
+        return true;
+    }
 }
diff --git a/src/main/resources/assets/refinedstorage/blockstates/machine_casing.json b/src/main/resources/assets/refinedstorage/blockstates/machine_casing.json
index 0526b619f..88f2eceb7 100755
--- a/src/main/resources/assets/refinedstorage/blockstates/machine_casing.json
+++ b/src/main/resources/assets/refinedstorage/blockstates/machine_casing.json
@@ -3,7 +3,7 @@
   "defaults": {
     "model": "cube_all",
     "textures": {
-      "all": "refinedstorage:blocks/casing"
+      "all": "refinedstorage:blocks/machine_casing"
     }
   },
   "variants": {
diff --git a/src/main/resources/assets/refinedstorage/blockstates/security_manager.json b/src/main/resources/assets/refinedstorage/blockstates/security_manager.json
new file mode 100755
index 000000000..6f83a86df
--- /dev/null
+++ b/src/main/resources/assets/refinedstorage/blockstates/security_manager.json
@@ -0,0 +1,42 @@
+{
+  "forge_marker": 1,
+  "defaults": {
+    "model": "cube_all",
+    "textures": {
+      "all": "refinedstorage:blocks/machine_casing"
+    }
+  },
+  "variants": {
+    "inventory": [
+      {
+        "transform": "forge:default-block"
+      }
+    ],
+    "connected": {
+      "true": {
+      },
+      "false": {
+      }
+    },
+    "direction": {
+      "north": {
+        "y": 0
+      },
+      "east": {
+        "y": 90
+      },
+      "south": {
+        "y": 180
+      },
+      "west": {
+        "y": 270
+      },
+      "up": {
+        "x": 270
+      },
+      "down": {
+        "x": 90
+      }
+    }
+  }
+}
\ No newline at end of file
diff --git a/src/main/resources/assets/refinedstorage/models/item/security_card.json b/src/main/resources/assets/refinedstorage/models/item/security_card.json
new file mode 100755
index 000000000..6cc78ce4a
--- /dev/null
+++ b/src/main/resources/assets/refinedstorage/models/item/security_card.json
@@ -0,0 +1,6 @@
+{
+  "parent": "item/generated",
+  "textures": {
+    "layer0": "refinedstorage:items/security_card"
+  }
+}
diff --git a/src/main/resources/assets/refinedstorage/textures/blocks/casing.png b/src/main/resources/assets/refinedstorage/textures/blocks/machine_casing.png
similarity index 100%
rename from src/main/resources/assets/refinedstorage/textures/blocks/casing.png
rename to src/main/resources/assets/refinedstorage/textures/blocks/machine_casing.png
diff --git a/src/main/resources/assets/refinedstorage/textures/items/security_card.png b/src/main/resources/assets/refinedstorage/textures/items/security_card.png
new file mode 100755
index 000000000..7e6a6297a
Binary files /dev/null and b/src/main/resources/assets/refinedstorage/textures/items/security_card.png differ