What do the error codes "403" and "407" represent when using an overseas HTTP proxy?

In this Internet era, all walks of life need the support of big data, so a large number of crawler workers are born, and crawler cannot do without IP agent, so it also drives the IP agent industry, which is complementary to each other, but a lot of people will encounter various problems in crawler. For example, when I use an overseas HTTP proxy to visit the target website, I respond to various error codes. What do these error codes mean? How to solve it?

In particular, when we do overseas crawler business, we often encounter access denial (403) or 407 error code, which makes many business personnel very headache. Let's take a look at the reasons for these two situations.

1. When using an overseas proxy IP address to access Http websites:

A. Use the browser to set the proxy IP address:

1. The browser pops up an input box, asking you to enter the user name and password. If you enter the wrong information and click "Login", the input box will continue to pop up.

In this case, an authorization error occurs. You need to check the authorization mode. If the authorization mode is IP binding mode, you need to check whether the IP address in the whitelist is correct or whether the bandwidth of the dynamic IP address is correct. If the account password mode is used, you need to check whether the account password is correct.

2. The error message "Access Denied" is displayed on the web page.

This situation means that the proxy IP is used to request the website too frequently, the concurrency is too large, need to reduce the frequency of requests or buy a higher number of packages (if the use of short-acting high-quality proxy), there is a relatively small chance that the website in the blacklist.

B. Use code to connect proxy IP access:

1. Return 407 error code. This is a clear indication of an authorization error.

2. Return error 403 with "Access Denied" in the html.

This situation means that the proxy IP is used to request the website too frequently, the concurrency is too large, need to reduce the frequency of requests or buy a higher number of single IP package (if the use of short-acting high-quality proxy), there is a relatively small possibility, is to visit the website in the blacklist.

2. When "403 cannot be Accessed" is returned using an overseas IP proxy:

A. Use the browser to set the proxy IP address:

1. The browser displays an input box asking you to enter the user name and password. If you enter incorrect information and click Log In, the input box will continue to be displayed.

In this case, an authorization error occurs. You need to check the authorization mode. If the authorization mode is IP binding mode, you need to check whether the IP address in the whitelist is correct or whether the bandwidth of the dynamic IP address is correct. If the account password mode is used, you need to check whether the account password is correct.

2. The web page displays the error message "Website cannot be accessed" output by the browser. There are three possible reasons for this: The proxy IP has been invalidated and outlived its life.

Using proxy IP to request urls is too frequent and concurrent, so you need to reduce the frequency of requests or purchase a higher number of packages (if you are using a short-acting, high-quality proxy).

Visited the sites on the blacklist.

Smartproxy is an overseas HTTP proxy server provider, whose IP can accurately locate the city level and update the IP pool every month. With first-hand IP, SmartProxy serves in the field of big data acquisition and helps enterprises/individuals obtain data sources quickly and efficiently. It is really very cheap and affordable, but the speed is fast and stable.