News, analysis and practical guides for the people who operate, secure and lead infrastructure teams.
Backups, security, compliance, network operations…Shadowed rules, duplicates, overly permissive entries, dead rules, insecure services and missing logging: the six defects present in nearly every rule base, and why manual review does not find them.
Read articleCisco IOS can prefix both errors and warnings with a percent sign, making simple pattern matching unreliable. Network automation should therefore treat CLI output as a signal to investigate, validate the resulting state, and retain evidence of what actually happened.
Read articleIn large enterprise environments, firewall rule bases rarely fail because of a single bad decision. They fail because of accumulated complexity, lack of discipline, and rules that outlive their original purpose. As networks grow — more zones, more applications, more cloud connectivity — firewall rules often turn into a catch-all configuration layer. What started as a structured security policy slowly becomes a maze no one fully understands anymore. This is not just messy. It is dangerous.
Read articleNetwork configuration backups are more than disaster recovery — they’re a pillar of operational resilience and compliance. Learn how to design, automate, and secure configuration backups across multi-vendor environments with proven industry best practices.
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