- Lab
- Cloud
- Security
Firewall Troubleshooting
In this learning activity, there is a fairly simple, but broken, firewall configuration. The firewall on `Server1` (10.0.1.10) should be configured to permit web requests from `Client1` (10.0.1.11). You will need to determine why the firewall isn't working as intended, and resolve the issue.
Path Info
Table of Contents
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Challenge
Verify That the Issue Exists
Prior to beginning the troubleshooting, you should verify that the issue actually exists.
Attempt to
curlthe headers for 10.0.1.10 from 10.0.1.11:$ curl -I 10.0.1.10 -
Challenge
Resolve the Problem by Creating a New Zone
You can resolve this issue by creating a new zone, adding the http service to it, and designating 10.0.1.11 as a source for the zone. Use these commands:
[root@$host ~]# firewall-cmd --permanent --new-zone=api [root@$host ~]# firewall-cmd --reload [root@$host ~]# firewall-cmd --permanent --zone=api --add-service=http [root@$host ~]# firewall-cmd --permanent --zone=api --add-source=10.0.1.11 [root@$host ~]# firewall-cmd --reload -
Challenge
Verify That the Problem Is Resolved
From
Client1(10.0.1.11), run:curl -I 10.0.1.10
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