Blog - Tag: server-security

Investigating Unexpected Outbound Connections on Linux Servers

Investigating Unexpected Outbound Connections on Linux Servers

Aug 23, 2026    Mariusz Antonik    Security    6 min read

Unexpected outbound connections on a Linux server deserve careful investigation, but they do not always mean compromise. This checklist shows how to map a connection to a process, verify the destination, correlate the timing with deployments and scheduled jobs, and choose a safe response. Use it to make linux server monitoring more practical for developers and small business owners who need calm, evidence-based triage.

#egress-monitoring #linux server monitoring #linux-admin #outbound-connections #server-security #small business IT
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Linux Server Hardening Checklist with Monitoring for Small Teams

Linux Server Hardening Checklist with Monitoring for Small Teams

Aug 13, 2026    Mariusz Antonik    Security    6 min read

A Linux hardening guide is most useful when it turns into repeatable checks, not a one-time setup sprint. This checklist connects SSH, patching, firewall rules, backups, certificates, and linux server monitoring into a practical routine for small teams. Use it to reduce exposure, catch drift, and keep production servers safer without building a heavyweight security program.

#linux server monitoring #linux-hardening #server-security #small business IT #ssh-security
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Cloud and Bot IP Allow Lists: How to Keep Server Access Rules Healthy

Cloud and Bot IP Allow Lists: How to Keep Server Access Rules Healthy

Jun 28, 2026    Mariusz Antonik    Security    7 min read

Auto-updated cloud and bot IP allow lists can save time, but they should not become blind production changes. This checklist explains how to keep Linux server access rules healthy with source review, staged rollout, validation, rollback, and weekly monitoring. Use it to reduce lockout risk while keeping trusted providers and uptime checks working.

#firewall-rules #ip-allowlist #linux server monitoring #rollback #server-security #uptime-monitoring
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All Posts Infrastructure Monitoring 26 Linux Server Monitoring 5 MySQL Heatwave 5 General 10 Oracle Cloud (OCI) 15 Database 26 Networking 7 Automation 55 Security 13 Server Health 31 Infrastructure Health Reporting 2 MySQL Performance 2 CPU Monitoring 2 Disk Monitoring 1
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