+### -*-sh-*-
+###
+### Firewall configuration for eggle
+###
+### (c) 2024 Mark Wooding
+###
+
+###----- Licensing notice ---------------------------------------------------
+###
+### This program is free software; you can redistribute it and/or modify
+### it under the terms of the GNU General Public License as published by
+### the Free Software Foundation; either version 2 of the License, or
+### (at your option) any later version.
+###
+### This program is distributed in the hope that it will be useful,
+### but WITHOUT ANY WARRANTY; without even the implied warranty of
+### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+### GNU General Public License for more details.
+###
+### You should have received a copy of the GNU General Public License
+### along with this program; if not, write to the Free Software Foundation,
+### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+###--------------------------------------------------------------------------
+### eggle-specific rules.
+
+m4_divert(86)m4_dnl
+## Externally visible services.
+allowservices inbound tcp \
+ ssh \
+ ident \
+ squid
+allowservices inbound udp \
+ tripe
+
+## We use public NTP servers.
+run ip46tables -A inbound -j ACCEPT \
+ -m state --state ESTABLISHED \
+ -p udp --source-port 123 --destination-port 123
+
+## Other interesting things.
+dnsresolver inbound
+dnsserver inbound
+
+m4_divert(-1)
+###----- That's all, folks --------------------------------------------------