How to block access to your website based on an IP range, User-Agent, time, or URL. If you are looking to block access based on an IP address, you should read this article first. Then you can proceed to block access based on other criteria, such as URL. By the time you have finished reading this article, you should be familiar with the basic concepts of blocking access.
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Blocking access based on IP range
You can activate Anti crawler protection on your website if you notice unauthorized bots attempting to access your website. You can set up a blocking option in your browser’s settings to identify specific websites. If the bot is a robot, the protection will block it from accessing your site. The IP range can be found by doing a reverse nslookup. You can also block specific IP addresses to stop malicious activity.
Fortunately, there are many ways to make sure you don’t get banned. First, you should slow down the scraping speed. This will mimic the normal speed of human browsing. Second, high-level anti-scraper protection techniques analyze each IP’s average request rate to prevent repeated scraping of websites. If the IPs are suspicious, the scraper might be blocked. If the user agent is a spoof, you can change it frequently.
Blocking access based on User-Agent
The Blocking Access based on User-Agent feature allows you to prevent unauthorized access by matching a user’s browser’s User-Agent string to one of the entities on your server. The blocking functionality is effective for blocking malicious web traffic, but it can also be useful for detecting bots and other undesirable visitors. In this case, a user agent blacklist can be a great solution.
The user agent can be determined through a number of different ways, including the URL filter and the destination. Filters can include domain name, IP address, and even a substring of the User-Agent. Using these filters, you can block access based on the User-Agent for all or part of your website. In some cases, this can even allow you to exclude traffic generated by employees or shared IP addresses.
Blocking access based on time
Activate anti-crawler protection for your IP. Then, go to the Custom Protection Policy page and enable Rate Limiting. This option blocks certain IPs based on their request rate. You can set the rate limit for a particular IP or set it as a rule. For example, if an IP sends 1,000 requests in 30 seconds, it will be blocked for ten hours.
Blocking access based on time when anti-crawler protection is enabled for your IP addresses is useful if you are aware of the malicious users who are bypassing anti-crawler policies. The way to check if an IP address is a spammer is to use a reverse nslookup on it. You can use this tool to check the source IP address of the site.
Blocking access based on URL
In order to use anti-crawler protection, you must configure your website so that only the intended users can access certain web pages. This feature can be activated in several ways, but the most common way is to use the Web Application Firewall (WAF) feature. You can do this from the management console by enabling the feature under Website Settings, or from the configuration policy of your web server.
When you activate Anti-Crawler protection for your IP based on URL, your browser will block any malicious bots from accessing the website. Once you’ve activated this feature, you can also prevent specific websites from being accessed by bots that come from different IP addresses. To enable this feature, simply navigate to the Settings tab and turn on the option for “blocking website crawlers”.
Blocking access based on UA
If you want to block access to a certain website based on its UA, you can use a service known as UA-CH to do so. These services inspect the Sec-CH-UA header sent by default with every request. Depending on the use case, you may also need to request other UA client hints. Here are some considerations to make when implementing UA-CH. After all, this type of restriction isn’t user-hostile.
