IP Security Guides
Hands-on guides on IP reputation, blocklists, abuse reporting and firewall integrations.
IP Blocklist Feeds on pfSense and OPNsense: pfBlockerNG and URL Table Aliases
Building the feed URL, a pfBlockerNG list, an OPNsense URL table alias, rule order, verification with pfctl, and keeping false positives in hand.
14 reads · 0 comments Read More →A Free IP Protection Plugin for WordPress: Install and Configure
Gates on login, comments, registration and REST, a five-step install, monitor mode, the two thresholds, branded screens, caching and Cloudflare notes.
15 reads · 0 comments →Installing IP-DB Shield: A Visitor Gate That Runs on Your Own Server
A three-minute PHP install, monitor mode, the decision ladder, the feed and api sources, the private panel, and the SEO and privacy details.
20 reads · 0 comments →Set Up a Free Honeypot Sensor: Catch Attackers on Your Own Server
A one-command systemd service, 64 ready-made decoys, the sandbox it runs in, what happens to the data, and the contributor quota.
16 reads · 0 comments →Free IP Reputation Check Tools and APIs Compared (2026)
AbuseIPDB, VirusTotal, IPQualityScore, GreyNoise, Spamhaus, Talos, MXToolbox, OTX and IP-DB: free limits, and which one fits which job.
136 reads · 0 comments →Get Your Public IP from the Terminal: curl ip-db.com/me
Your public IP in one line, the JSON, country and ASN endpoints, a speed test from the terminal, and how to run it on Windows.
86 reads · 0 comments →WHOIS & RDAP Lookup Guide: Finding Who Owns an IP
How WHOIS and RDAP differ, what an ASN is, and how to reach the party responsible for an address.
66 reads · 0 comments →What Is an IP Address? IPv4 vs IPv6 Explained
What an IP address is, how IPv4 and IPv6 differ, and how addresses are handed out.
47 reads · 0 comments →Integrating IP Reputation into Wazuh: CDB Lists, Rules, and Active Response
Turning the feed into a CDB list, writing the match rule, enriching alerts, and blocking with active response.
26 reads · 0 comments →Blocking IPs with an External Dynamic List (EDL) in Palo Alto PAN-OS
Creating the EDL, certificate profiles, security policy order, CLI verification commands, and capacity limits.
26 reads · 0 comments →How IP Reputation Scoring Works: Signals, Weights, and Bands
How feeds, community reports, and DNSBL listings turn into a score — and which band deserves which action.
61 reads · 0 comments →How Accurate Is IP Geolocation? The Country Fits, the City Often Doesn't
Where location estimates come from, why the city is so often wrong, and which decisions the data can carry.
51 reads · 0 comments →What Is an IP Blacklist and How Do You Get Delisted?
Why servers end up on blacklists and the steps that actually get them removed.
78 reads · 0 comments →How to Report an Abusive IP — and What Happens Next
Gathering evidence, finding the right abuse contact, writing the report, and what the operator does with it.
48 reads · 0 comments →How to Add an IP Blocklist Threat Feed to FortiGate (External Connector)
FortiOS external resource setup, inbound and outbound policy design, verification commands, and the usual connector failures.
44 reads · 0 comments →DNSBL and RBL Explained: How Mail Blocklists Actually Work
How a mail server queries a DNSBL, the types of list, what gets an IP listed, and how to read the answers.
59 reads · 0 comments →How to Tell If an IP Is a VPN, Proxy, or Tor Exit
The signals that give it away, why residential proxies are hard, and how to avoid false positives.
47 reads · 0 comments →Blocking Malicious IPs: fail2ban, nftables, and Edge Firewalls
Which layer should block, practical fail2ban and nftables set configs, and how wide and long to ban.
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