diff --git a/a/amazon-ecs-agent.yml b/a/amazon-ecs-agent.yml
index 6954ecbf..514680c7 100644
--- a/a/amazon-ecs-agent.yml
+++ b/a/amazon-ecs-agent.yml
@@ -7,10 +7,10 @@ ecs-agent:
   - /opt/var/lib/ecs/data:/data
   - /sys/fs/cgroup:/sys/fs/cgroup:ro
   - /var/run/docker/execdriver/native:/var/lib/docker/execdriver/native:ro
-  ports:
-  - "127.0.0.1:51678:51678"
-  - "127.0.0.1:51679:51679"
+  net: host
   environment:
+  - ECS_ENABLE_TASK_IAM_ROLE=true
+  - ECS_ENABLE_TASK_IAM_ROLE_NETWORK_HOST=true
   - ECS_LOGFILE=/log/ecs-agent.log
   - ECS_LOGLEVEL=info
   - ECS_DATADIR=/data