We architect zone-based firewalls with least-privilege ACLs, outbound egress control, NAT, and micro-segmentation. Policies restrict east–west movement, isolate crown-jewel systems, and enforce service-specific ports. Terraform/Ansible manage rules as code, enabling peer review, versioning, and rollback while maintaining consistent security baselines across cloud VPCs and on-prem networks.

We implement WAFs that block SQLi, XSS, CSRF, path traversal, RCE, and deserialization attacks. Positive security models, custom signatures, and virtual patching protect legacy code without release delays. Staging and learning modes reduce false positives before enforcement, safeguarding APIs, single-page apps, and headless commerce endpoints.

We configure behavioral bot detection, device fingerprinting, and rate limits to stop credential stuffing, scraping, carding, and inventory abuse. Rules adapt per endpoint risk and tenant. Allow lists for partners ensure continuity, while automated challenges and dynamic blocks reduce noise without harming real customers or search indexing.

We enable L3–L7 DDoS defenses with auto-detection, upstream scrubbing, and edge absorption. Adaptive thresholds, connection limiting, and caching preserve availability under volumetric, protocol, or application floods. Runbooks, drills, and escalation paths ensure predictable response with minimal business impact during targeted attack campaigns or seasonal spikes.

Firewall rules are codified, peer-reviewed, and approved via pull requests. Change windows, ticket references, and evidence exports satisfy auditors. Drift detection, rule expiry, and recertification cycles remove stale access. Mapping to ISO, SOC 2, PCI, and HIPAA controls makes compliance demonstrable without spreadsheet-driven audits.

We integrate logs with SIEM, build dashboards, and triage noisy signatures. Staged rules, sampled enforcement, and exception granularity maintain protection while avoiding support burden. Continuous tuning aligns coverage to traffic patterns, new releases, and emerging threats, keeping protection strong and developer friction low.