Is ther a way to configure EC2 Security Groups so that they do not allow specific types of outbound connectivity (such as making HTTP requests to the public internet)?
                +1 
                A: 
                
                
              
            I don't believe so, no. You may have better luck on ServerFault, though.
AFAIK, EC2 security groups are only for accessing the server (eg, keypairs); any internal connectivity would probably have to be regulated through iptables.
                  mway
                   2010-10-28 20:40:03