The Bogons Block List includes IP addresses that are not allocated by the Internet Assigned Numbers Authority (IANA) and are thus considered invalid for routing. Removal from the list typically requires verification of legitimate allocation and a formal request to the maintaining organization.
Introduction
Ever heard of bogons? If you’re diving into the world of networking, you might want to get familiar with them. Bogons are IP addresses that shouldn’t be routed on the internet. They can cause all sorts of headaches, from security issues to connectivity problems. In this article, we’ll break down what bogons are, why they matter, and how to manage them effectively. Let’s get into it!
What Are Bogons?
Definition of Bogons
So, what exactly are bogons? Simply put, bogons are IP addresses that are not allocated to any organization or are reserved for special purposes. Think of them as the unwanted guests at a party—nobody invited them, but they still show up and cause chaos.
Why Do Bogons Matter?
Bogons can mess with your network in a big way. They can lead to security vulnerabilities, wasted bandwidth, and even make your network less efficient. By blocking these addresses, you can keep your network running smoothly and securely.
Listing Criteria for Bogons
How Are Bogons Identified?
Identifying bogons isn’t as complicated as it sounds. Here are some key criteria used to determine if an IP address is a bogon:
-
Unallocated IP Ranges: These are ranges that haven’t been assigned to any organization. They’re like empty lots in a neighborhood—no one lives there, so they shouldn’t be used.
-
Reserved IP Addresses: Some IP addresses are reserved for specific uses, like private networks or multicast. Using these on the public internet is a no-go.
-
Historical Data: Sometimes, IP addresses that were once allocated can become bogons if they’re returned to the pool. Keeping track of these changes is crucial.
Common Bogon Ranges
Here are a few common bogon ranges you might encounter:
- IPv4 Private Ranges: 10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16
- IPv4 Loopback: 127.0.0.0/8
- IPv6 Unique Local Addresses: fc00::/7
These ranges are reserved for specific purposes and should never be routed on the public internet.
The Bogons Block List
What Is a Bogons Block List?
A bogons block list is a list of IP addresses that are identified as bogons. It’s like a blacklist for unwanted guests. Network administrators use these lists to filter out bogons and keep their networks safe.
How Is the Block List Maintained?
Maintaining a bogons block list involves regular updates. Here’s how it typically works:
-
Monitoring IP Allocations: Organizations like IANA and regional internet registries (RIRs) keep track of IP address allocations. They provide updates on which addresses are allocated and which are still unassigned.
-
Community Contributions: Many network professionals contribute to bogon lists, sharing their findings and updates. This collaborative effort helps keep the lists accurate.
-
Automated Tools: Some tools automatically update bogon lists based on the latest data from registries. This helps ensure that the lists are always current.
Removal Process for Bogons
Why Remove Bogons?
Removing bogons from your network is essential for several reasons:
-
Improved Security: By blocking bogons, you reduce the risk of attacks from unknown sources.
-
Better Performance: Filtering out bogons can improve your network’s performance by reducing unnecessary traffic.
-
Compliance: Some industries have regulations that require organizations to maintain secure networks. Removing bogons can help you stay compliant.
Steps to Remove Bogons
Here’s a simple process to remove bogons from your network:
-
Identify Bogons: Use a bogons block list to identify which IP addresses are bogons on your network.
-
Update Firewall Rules: Adjust your firewall settings to block these addresses. This is like putting up a “No Trespassing” sign.
-
Monitor Traffic: Keep an eye on your network traffic to ensure that bogons are being effectively blocked.
-
Regular Updates: Make it a habit to regularly update your bogons block list. This ensures you’re always protected against new bogons that may pop up.
FAQs About Bogons
What happens if I don’t block bogons?
If you don’t block bogons, you might face security risks, increased bandwidth usage, and potential connectivity issues. It’s like leaving your front door wide open—inviting trouble!
How often should I update my bogons block list?
It’s a good idea to update your bogons block list at least once a month. However, if you’re in a high-security environment, consider updating it weekly.
Can I create my own bogons block list?
Absolutely! You can