I. Introduction
In today's digital age, businesses are facing an increasing number of cybersecurity threats. To protect sensitive data and systems from unauthorized access, businesses need to implement effective security measures. One of the key tools is the bastion host, which plays an important role in corporate networks. This article will introduce the concept and functions of the bastion host and the benefits it brings to enterprise security.
2. Get to know the bastion host
A bastion host is a security device or system used to manage and monitor access to an enterprise's critical systems. It acts as a secure springboard to control and log access to sensitive systems by administrators and other users. Bastion hosts are typically located between an enterprise's internal network and external networks as an intermediary layer to provide an additional layer of security.
3. Functions of bastion host
Authentication and Authorization: The bastion host requires users to authenticate and grant appropriate access based on their permission levels. This ensures that only authorized users have access to critical systems.
Session Management: The bastion host monitors and records session activity between users and target systems. It can log commands, file transfers, and other operations for auditing and investigation purposes.
Auditing and logging: The bastion host generates detailed audit logs recording user activities and system access. These logs can be used to monitor and investigate security incidents.
Access control: The bastion host can restrict access to critical systems and only allow authorized users to access through the bastion host. This access control prevents direct unauthorized access and reduces potential security breaches.
Multi-factor authentication: The bastion host supports multi-factor authentication to increase the security of user authentication. This can include the use of tokens, biometrics, or other additional authentication methods.
4. Benefits of bastion machine
Enhanced security: By forcing all users to access through a bastion host, enterprises can reduce the risk of direct access to critical systems. Bastion hosts provide an additional layer of authentication and access control to help prevent unauthorized access and potential security breaches.
Provides auditing and compliance: The bastion host's auditing and logging capabilities enable enterprises to monitor and audit user activity to meet compliance requirements. These audit logs can be used to investigate security incidents and track user behavior.
Simplified permissions management: By centralizing all access on the bastion host, enterprises can more easily manage user permissions. Administrators can centrally manage and authorize user access rights, eliminating the need for independent rights management on each critical system.
Improve operational efficiency: Bastion hosts provide a centralized access point, allowing administrators to manage and maintain critical systems more efficiently. It simplifies remote access and system management processes, reducing complexity and time costs.
5. Bastion host JumpServer installation process
With the development of Internet technology, there are more and more types of bastion machines to choose from. Next, I will introduce to you the popular bastion machine - Jumpserver bastion machine.
We are using and familiarizing ourselves with the bastion machine. We must start with the installation. Then I will introduce the installation process of a Jumpserver bastion machine in detail.
The installation environment I will demonstrate next is based on the Linux environment. The Linux version I chose here is CentOS 9. You can choose the version according to your own requirements. However, if you choose the CentOS 7 version, please kernel it before installation. Upgrade to 4.0 and above to facilitate subsequent installations. It is better to choose a good version. Next, we have to install the memory and core quantity of the environment. Because we download a large number of images and installation packages, it is best to choose 8G and 8G cores for our memory. It is best to choose 4, so as to better ensure the smooth installation. After the environment is prepared, we will proceed to the most important step - online installation.
As the name suggests, for online installation, we must ensure that the installation environment can maintain communication with the external environment. We can use the ping command to test whether the communication is normal. If the communication is normal, we can install it. In fact, the installation process is very simple, just one code to let it go. Just execute the script that Jumpserver officially prepared for us.
curl -sSL https://resource.fit2cloud.com/jumpserver/jumpserver/releases/latest/download/quick_start.sh | bashHowever, during the execution of the script, we may encounter a series of difficult problems such as lagging and immobility. We can exit the script execution with ctrl+c, and then re-enter the above code to execute it again. This process may be a bit long, and you may need to wait patiently until the installation is completed.
After a long wait, after the installation is completed, we can use the IP address to log in to the jumpserver bastion machine. Another point that needs attention is that before logging in, we must ensure that the firewall and SELinux on the server where jumpsever is installed are turned off.
When we see the above page, it means that our jumpserver bastion machine has been installed successfully. We can log in and perform a series of configurations according to our needs. The user name and password for logging in are both admin. You can change the password yourself after logging in successfully. At this point our installation process is complete. For the next configuration, we can refer to the jumpserver official website documentation to complete it according to our own needs.
https://docs.jumpserver.org/zh/v3/ //jumpserver在线文档
6. Conclusion
Bastion hosts are a critical security tool that can strengthen the security and compliance of enterprise networks. By controlling and monitoring access to critical systems, bastion hosts help enterprises prevent unauthorized access and potential security threats. It provides auditing and logging capabilities to meet compliance requirements and simplify permissions management and operational efficiency. A bastion host is an indispensable tool for any enterprise that takes cybersecurity seriously.
Hopefully this blog post has given you some basic understanding and benefits of bastion machines. If you have any questions or further discussion, please feel free to ask.