IP Blocking & Proxy Servers

When you visit a website with a web browser or a web scraping tool, such as Sequentum Enterprise, the website owner can record your IP address and may be able to use this information to identify you or block your access to the website.

If you do not want a website owner to be able to identify you while you visit a website, you can use a proxy server to hide your IP address. When you use a proxy server, you do not visit the target website directly, but instead, request that the proxy server visit the website for you.

There are many different types of proxy server, but Sequentum Enterprise supports only HTTP proxy servers. It does not support other types of proxy servers, such as SOCKS proxies.

How to Configure Proxy Servers

After you have purchased proxy server access or found freely available proxy servers on the web, you will receive one or more proxy server IP addresses and possibly a username and password to access the proxies. You need to enter this information into the Sequentum agent by selecting Agent Settings from the ribbon menu, or you can setup default proxies in the Application Settings ribbon menu.

Proxy_settings_Agent.png
Agent proxy settings

Proxy_settings_App.png
Application proxy settings

The proxy menus allow you to set the Proxy source. You can select one of the following proxy sources:

Proxy source Description

Default

The agent will use the proxy configured in your Web Browser, or no proxies if no proxies have been configured in Web Browser.

Application

The agent will use the default proxy settings configured in the Application Settings menu.

Proxy List

The agent will use a specific list of proxies. Click the Proxy List button to add proxies to the list.

Gateway

Use this proxy setting in Application Settings if you must connect to a specific proxy to access the Internet.

3rd Party

Sequentum Enterprise can integrate with the following 3rd party proxy provides:

  • Nohodo
  • Private Proxy Switch

If you set the 3rd party proxy to Proxy API, you can specify API configuration to download a list of proxies from a 3rd party API.

If you set the 3rd party proxy to Cloud, you can specify API configuration to download a list of proxies from a 3rd party API.

You can also set the 3rd party proxy to Fiddler, which will allow you to view web traffic between Sequentum Enterprise and the target web server. This can sometimes be useful when debugging hard to process websites. This requires the Fiddler software to be running on the computer.

Auto Detect Sequentum Enterprise will try its best to auto detect proxy configuration.

Direct

The agent will not use any proxies.

 

The Proxy List screen is used to specify a list of proxies and set the proxy verification option:

ipBlocking3.png
Add proxies on the Proxy list screen

You must specify the Proxy Address in the following format, including the port number:

206.118.215.245:60099

In the example above, 206.118.215.245 is the IP address of the proxy server and 60099 is the port number.

Proxy Verification

Sequentum Enterprise can automatically verify if a proxy is available before switching to the proxy. This allows agents to switch to the next proxy if a proxy is not available, and thereby avoid stopping the agent prematurely just because a proxy is unavailable.

Proxy verification option Description

Verify proxy before use

The agent will verify a proxy before switching to the proxy.

Verification timeout

The number of seconds the agent will wait for a successful proxy verification.

 

Importing Proxy Servers

If you are using a large number of proxy servers, it can be tedious to add them all to each project. You can use the Import Proxies button to import a list of proxies from a CSV file. The CSV file must have the following format:

Proxy Address, Username, Password

The Username and Password are optional columns.

CSV Example 1:

proxy
173.244.220.185:8800
50.21.10.78:8800
134.22.166.242:8800

CSV Example 2:

proxy, username, password
173.244.220.185:8800, user1, pass1
50.21.10.78:8800, user1, pass1
134.22.166.242:8800, user1, pass1

Proxy Gateway

Some company network configurations require all users to access the Internet through a specific proxy. Use the Gateway proxy option in Application Settings to open the Proxy Gateway screen.

proxyGateway.png
Some companies require force Internet access only through a proxy gateway

The Proxy address can specify a proxy directly or it can be a URL to a proxy configuration script (PAC).

Click the Activate button after updating the agent's proxy configuration for the changes to take effect in the designer when debugging.

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