diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7996365
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+merged/
+*.bak
\ No newline at end of file
diff --git a/README.md b/README.md
index 995ad9a..6fd4769 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,15 @@
-# shared-bans
-
-Shared IP ban list synced to all sami servers
\ No newline at end of file
+# Shared IP ban list — synced to all sami servers
+#
+# Two files hold the bans:
+#   - static/bans.txt   — auto-generated from sources.json URLs (regenerated nightly)
+#   - dynamic/bans.txt  — manually-maintained, for IPs you've banned on purpose
+#
+# To ban an IP or CIDR across all servers, add it to dynamic/bans.txt, commit, push.
+# The systemd timer on each server pulls every 5 minutes and applies the union.
+#
+# Format: one CIDR or IP per line. Lines starting with # are ignored.
+# Example:
+#   # 2026-06-30 — brute-forcing SSH
+#   185.220.101.45
+#
+# To ban a /24 range: 185.220.101.0/24
\ No newline at end of file
diff --git a/dynamic/bans.txt b/dynamic/bans.txt
new file mode 100644
index 0000000..622300f
--- /dev/null
+++ b/dynamic/bans.txt
@@ -0,0 +1,8 @@
+# Dynamic ban list — IPs you've banned on purpose.
+# One CIDR or IP per line. Lines starting with # are ignored.
+# Format example: 185.220.101.45  (or 185.220.101.0/24 for a /24 range)
+#
+# Add an entry, commit, push. Every server picks it up within 5 minutes.
+
+# 2026-06-30 — example placeholder
+# 192.0.2.1
\ No newline at end of file
diff --git a/sources.json b/sources.json
new file mode 100644
index 0000000..947267b
--- /dev/null
+++ b/sources.json
@@ -0,0 +1,29 @@
+{
+  "_comment": "URLs that return one CIDR or IP per line. Lines starting with # are ignored. Each is fetched nightly into static/bans.txt.",
+  "sources": [
+    {
+      "name": "israel-ipdeny",
+      "url": "https://www.ipdeny.com/ipblocks/data/aggregated/il-aggregated.zone",
+      "format": "cidr-only",
+      "comment": "Israeli IP ranges via ipdeny.com — primary block for political/regional threats"
+    },
+    {
+      "name": "russia-ipdeny",
+      "url": "https://www.ipdeny.com/ipblocks/data/aggregated/ru-aggregated.zone",
+      "format": "cidr-only",
+      "comment": "Russian IP ranges — add when needed; comment out to disable"
+    },
+    {
+      "name": "china-ipdeny",
+      "url": "https://www.ipdeny.com/ipblocks/data/aggregated/cn-aggregated.zone",
+      "format": "cidr-only",
+      "comment": "Chinese IP ranges — uncomment to enable"
+    },
+    {
+      "name": "firehol-level1",
+      "url": "https://iplists.firehol.org/files/firehol_level1.netset",
+      "format": "cidr-or-ip",
+      "comment": "Firehol Level 1 — high-confidence attackers (updated daily)"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/static/bans.txt b/static/bans.txt
new file mode 100644
index 0000000..d2f73c0
--- /dev/null
+++ b/static/bans.txt
@@ -0,0 +1,771 @@
+# Auto-generated from sources.json — do not edit by hand.
+# To add new block sources, edit sources.json instead.
+# Currently includes: israel-ipdeny (767 CIDRs as of 2026-06-30)
+
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diff --git a/static/bans.txt.raw b/static/bans.txt.raw
new file mode 100644
index 0000000..e69de29