**To associate a security group with a load balancer in a VPC**
This example associates a security group with the specified load balancer in a VPC.
Command::
aws elb apply-security-groups-to-load-balancer --load-balancer-name my-load-balancer --security-groups sg-fc448899
Output::
{
"SecurityGroups": [
"sg-fc448899"
]
}