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- How do I configure a mail server (Postfix or Sendmail) in Linux?
- This article details configuring mail servers in Linux using Postfix or Sendmail. It emphasizes Postfix's simpler configuration, covering installation, main.cf file modifications (including crucial directives), SASL authentication, DNS setup, and t
- Linux Operation and Maintenance 784 2025-03-12 19:03:10
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- How do I set up a DNS server (BIND) in Linux?
- This article details setting up a BIND DNS server on Linux, covering installation, configuration of named.conf.options and named.conf.local, zone file creation, service restart, and testing. It also addresses troubleshooting, common errors, and cru
- Linux Operation and Maintenance 707 2025-03-12 19:02:43
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- How do I configure a virtual private network (VPN) in Linux using OpenVPN or WireGuard?
- This article guides Linux users through configuring VPNs using OpenVPN or WireGuard. It details installation, configuration, connection verification, and troubleshooting for both protocols. The article also compares their security implications and
- Linux Operation and Maintenance 1032 2025-03-12 19:02:16
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- How do I back up and restore a Linux system?
- This article details Linux system backup and restoration methods. It compares full system image backups with incremental backups, discusses optimal backup strategies (regularity, multiple locations, versioning, testing, security, rotation), and da
- Linux Operation and Maintenance 541 2025-03-12 19:01:08
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- How do I recover a damaged Linux system?
- This article details Linux system recovery methods, addressing issues from minor configuration errors to severe hard drive failures. It outlines a tiered approach: booting from a live environment, identifying the problem (using tools like fsck), rep
- Linux Operation and Maintenance 509 2025-03-12 19:00:45
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- How do I troubleshoot common Linux problems?
- This article provides a guide to troubleshooting common Linux problems. It details a systematic approach, covering initial problem identification, checking basics (network, disk space, processes, logs), and using advanced debugging techniques. Comm
- Linux Operation and Maintenance 1061 2025-03-12 19:00:17
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- How do I configure SELinux or AppArmor to enhance security in Linux?
- This article compares SELinux and AppArmor, Linux kernel security modules providing mandatory access control. It details their configuration, highlighting the differences in approach (policy-based vs. profile-based) and potential performance impacts
- Linux Operation and Maintenance 796 2025-03-12 18:59:15
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- How do I set up a firewall in Linux using firewalld or iptables?
- This article compares Linux firewall configuration using firewalld and iptables. Firewalld offers a user-friendly interface for managing zones and services, while iptables provides low-level control via command-line manipulation of the netfilter fra
- Linux Operation and Maintenance 1023 2025-03-12 18:58:51
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- How do I use Apache for blue-green deployments?
- This article details using Apache as a reverse proxy for blue-green deployments. It discusses configuring two identical Apache environments, implementing traffic switching via configuration changes or an external load balancer, and best practices fo
- Apache 840 2025-03-12 18:58:26
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- How do I implement canary deployments with Apache using reverse proxy configurations?
- This article details using Apache as a reverse proxy for canary deployments. It explains weighted round-robin and header-based routing configurations, emphasizing best practices for monitoring and potential challenges like configuration complexity a
- Apache 964 2025-03-12 18:58:00
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- How do I use Apache for A/B testing with mod_vhost_alias and mod_rewrite?
- This article details A/B testing using Apache's mod_vhost_alias and mod_rewrite. It explains creating virtual hosts for different website versions and using mod_rewrite for traffic splitting based on percentages. Performance implications and analyt
- Apache 636 2025-03-12 18:57:33
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- How do I configure Apache to block malicious bots and scrapers?
- This article details Apache configurations to mitigate malicious bots and scrapers. It explores ModSecurity for custom rule creation, .htaccess for simpler blocking, user-agent filtering, rate limiting (mod_evasive, mod_limitipconn), and CAPTCHAs.
- Apache 621 2025-03-12 18:54:54
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- How do I implement multi-factor authentication (MFA) with Apache?
- This article details implementing multi-factor authentication (MFA) with Apache, emphasizing the use of external providers like Auth0 or Okta via a reverse proxy. It discusses various MFA methods (TOTP, push notifications, SMS OTPs), best practices
- Apache 919 2025-03-12 18:54:23
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- How do I use Fail2ban to protect Apache against brute-force attacks?
- This article explains how to use Fail2ban to protect Apache from brute-force attacks. It details installation, configuration (including crucial regex adjustments), and monitoring. Limitations, such as vulnerability to sophisticated attacks and pote
- Apache 848 2025-03-12 18:53:58
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- How do I configure Apache with ModSecurity or other web application firewalls (WAFs)?
- This article details configuring Apache with ModSecurity or other Web Application Firewalls (WAFs). It covers installation, rule configuration, best practices (updates, fine-tuning, logging), potential conflicts with other modules, and troubleshooti
- Apache 236 2025-03-12 18:53:30
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