LWM-Linux/08 - Advanced Linux Administration/User and Password Security

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## Securing your **Linux Mint** system involves several important steps to protect your data and maintain system integrity. Let's delve into the details:
1. **Keeping Your System Up to Date**:
- Regularly update your system using the built-in update manager or the command line (`sudo apt-get update`).
- Apply security patches promptly to address vulnerabilities and protect against potential attacks¹.
2. **Using Strong Passwords**:
- A strong password is crucial for user accounts.
- Create passwords that are:
- At least eight characters long.
- A mix of uppercase and lowercase letters, numbers, and symbols.
- Unique for each account.
- Consider using a password manager to securely store and manage your passwords¹.
3. **Enabling the Firewall**:
- Activate the firewall (usually **ufw** or **iptables**) to control incoming and outgoing network traffic.
- Configure rules to allow necessary services and block unauthorized access¹.
4. **Installing Antivirus Software**:
- Although Linux is less susceptible to viruses, having an antivirus tool can add an extra layer of protection.
- Install a lightweight antivirus solution like **ClamAV**¹.
5. **Disabling Unnecessary Services and Applications**:
- Review installed software and disable any unnecessary services or daemons.
- Fewer running services reduce the attack surface¹.
6. **Enabling Automatic Updates**:
- Set up automatic updates to ensure your system stays secure without manual intervention.
- Regular updates also enhance features and fix bugs¹.
7. **Using Encryption**:
- Encrypt sensitive data, especially if you store it on external drives or cloud services.
- Tools like **VeraCrypt** or **LUKS** provide disk encryption options¹.
8. **Backing Up Your Data**:
- Regularly back up important files to an external location.
- Use tools like **rsync**, **Deja Dup**, or cloud storage services¹.