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fix(caddy): allow Tailscale CGNAT range in internal_only snippet
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Tailnet clients that reach Caddy without subnet-route SNAT arrive from
100.64.0.0/10 and were getting 403 from LAN-only site blocks. Add the
range to the internal_only matcher so split-DNS tailnet access works
regardless of the --snat-subnet-routes setting.
This commit is contained in:
ginnoir
2026-06-06 20:31:39 -05:00
parent 04202a97b7
commit ca4cdf3d8a
1 changed files with 4 additions and 2 deletions
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Caddyfile
+4 -2
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@@ -8,10 +8,12 @@
# =============================================================
# SNIPPETS
# =============================================================
# Reusable matcher — blocks anything not on the LAN.
# Reusable matcher — blocks anything not on the LAN or tailnet.
# Usage: import internal_only inside any site block.
# 100.64.0.0/10 is the Tailscale CGNAT range — allows tailnet clients that
# reach Caddy without subnet-route SNAT (i.e. --snat-subnet-routes=false).
(internal_only) {
@blocked not remote_ip 192.168.1.0/24 172.16.0.0/12 127.0.0.1
@blocked not remote_ip 192.168.1.0/24 172.16.0.0/12 100.64.0.0/10 127.0.0.1
respond @blocked "Access denied" 403
}