Apache Access Log Entry: CONNECT Method
Detecting Potential Threats from 'search.51job.com' Connection Attempts
In adherence to our rigorous editorial policy, this article's content has undergone careful testing for accuracy and trustworthiness and hence, this content is marked reliable source of information. View editorial history of this content.
We detected an usual access entry in our apache access logs.
The log entry recorded indicates that a client (from IP address
126.96.36.199) tried to use our server as an HTTP proxy to connect to
search.51job.com on port 443.
CONNECT method is a technique used for this purpose, especially for secure connections.
Here’s a breakdown of the log entry:
- 188.8.131.52: This is the IP address of the client making the request.
- [25/Oct/2023:00:07:54 +0000]: This is the timestamp of when the request was received.
- “CONNECT search.51job.com:443 HTTP/1.0”: This indicates that the client tried to use the HTTP
CONNECTmethod to establish a network connection to
443(which is typically used for HTTPS/secure connections).
- 404: This is the HTTP status code returned by our server. A
404code means “Not Found,” indicating that our server refused the proxy request. This is a good sign because it means our server is not misconfigured to act as an open proxy.
- 29489: This is the size of the response in bytes.
- “-” “- “: These are placeholders for the referrer and user agent, respectively. Both are missing in this request, which is common for automated tools or bots.
What does this mean?
- Potential Proxy Probe: The request looks like a probe to see if our server can be used as a proxy. If a server is misconfigured and allows this, it can be exploited by attackers to mask their activities or launch attacks through the victim server.
- It Was Blocked: Given that our server responded with a 404 error, it seems like the request was blocked, which is a good sign. It means our server isn’t acting as an open proxy.
What should you do if this happens to you?
Remember, the internet is vast, and automated scanning by bots looking for vulnerabilities is commonplace. The best defense is to be proactive in monitoring and maintaining server security.
Digital Setups has enforced a strict sourcing policy. Every content piece published on our website is passed through strict editorial review for contextual correctness, communication ethics, and programmatic tests wherever required. Our team research solutions from only credible, authentic, and trustworthy sources. Learn more about our editorial process.
Based on our editorial policy, we update our content time to time to ensure its usefulness, reliability, and validity.
Our standardized editorial process ensures right, timely, and usefulness updates to our content. Your honest opinion drives significant improvement to our content. We appreciate you are taking time to share that.
Readers who read this also found these helpful:
- Woo Express vs. Pressable WooCommerce Hosting
- Fixed: WordPress wp-json 500 Server Error
- TTFB: Time to First Byte – What it is, high TTFB causes, and fixes
- Unlock new cross-device capabilities & More with Google Signals
- Misleading or Clickbait Push Notification Hurts SEO
- Strange. Do you also see people dancing here and there?
- WP: Get Custom Logo Image URL for Built-in or Custom Sizes
- wp_list_users_args Hook – Explanation & Usage Example
- Google Ads: Keyword Planner Tool – Easy & Powerful Guide
- Keyword Density in SEO