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main.go
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main.go
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package main
import (
"log"
"os"
"github.com/aws/aws-sdk-go/aws"
"github.com/aws/aws-sdk-go/aws/session"
"github.com/aws/aws-sdk-go/service/ec2"
)
func main() {
svc := ec2.New(session.New())
var maxResults int64
maxResults = 500
var nextToken string
for {
descSGInput := &ec2.DescribeSecurityGroupsInput{
MaxResults: aws.Int64(maxResults),
}
if nextToken != "" {
descSGInput.NextToken = aws.String(nextToken)
}
descSGOut, err := svc.DescribeSecurityGroups(descSGInput)
if err != nil {
log.Println("Unable to get security groups. Err:", err)
os.Exit(1)
}
for _, sg := range descSGOut.SecurityGroups {
for _, ingress := range sg.IpPermissions {
if (ingress.FromPort != nil && *ingress.FromPort == 80 && *ingress.ToPort == 80) ||
(ingress.ToPort != nil && *ingress.FromPort == 443 && *ingress.ToPort == 443) ||
(ingress.ToPort != nil && *ingress.FromPort == 25 && *ingress.ToPort == 25) ||
(ingress.ToPort != nil && *ingress.FromPort == 465 && *ingress.ToPort == 465) ||
(ingress.ToPort != nil && *ingress.FromPort == 587 && *ingress.ToPort == 587) {
continue
}
if len(ingress.IpRanges) > 0 {
for _, ipRange := range ingress.IpRanges {
if *ipRange.CidrIp == "0.0.0.0/0" {
var fromPort, toPort int64
if ingress.FromPort != nil {
fromPort = *ingress.FromPort
}
if ingress.ToPort != nil {
toPort = *ingress.ToPort
}
log.Printf(`Unsafe security group. ID: %s , Name: %s, FromPort: %d, ToPort: %d`,
*sg.GroupId, *sg.GroupName,
fromPort, toPort)
}
}
}
}
}
if descSGOut.NextToken != nil {
nextToken = *descSGOut.NextToken
} else {
break
}
}
}