diff --git a/README.md b/README.md
index e147253..adef035 100644
--- a/README.md
+++ b/README.md
@@ -60,6 +60,9 @@ Ansible scripts are organized into roles. The roles used by Algo are described i
 
 ## Usage
 
+### Warning
+If you run Algo on your existing server, the iptables rules will be overwritten. If you don't want to overwite the rules, just skip the `iptables` tag. (You can find some information about tags [here](https://github.com/trailofbits/algo/blob/master/ADVANCED.md))
+
 ### Requirements
 
 * ansible >= 2.1
diff --git a/algo b/algo
index bf1ebe4..d1e5773 100755
--- a/algo
+++ b/algo
@@ -62,9 +62,9 @@ Enter your aws_access_key (http://docs.aws.amazon.com/AWSSimpleQueueService/late
 Enter your aws_secret_key (http://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSGettingStartedGuide/AWSCredentials.html):
 : " -rs aws_secret_key
   
-  read -p "
+  read -e -p "
 Enter the local path to your SSH public key:
-: " -r ssh_public_key
+: " -i "~/.ssh/id_rsa.pub" -r ssh_public_key
 
   read -p "
 Name the vpn server: