fix: the web service listens on the internal address, the external address or both.

debian-package/src/usr/lib/vpn-router/setup

@@ -215,11 +215,13 @@ def filter_block(ctx):
                 ]
         lines += ['# P2S DNS RULES END']
 
-    if ctx['web_enabled'] and ctx['int_iface']:
+    # The web service and the Router Manager choose their interfaces themselves, so their ports are open on both.
+    interfaces = [name for name in (ctx['int_iface'], ctx['wan_iface']) if name]
+    if ctx['web_enabled'] and interfaces:
         lines += [
             '',
             '# WEB RULES START',
-            f'-A ufw-before-input -i {ctx["int_iface"]} -p tcp --dport {ctx["web_port"]} -j ACCEPT',
+            *(f'-A ufw-before-input -i {name} -p tcp --dport {ctx["web_port"]} -j ACCEPT' for name in interfaces),
             '# WEB RULES END',
         ]
 
@@ -231,12 +233,12 @@ def filter_block(ctx):
             '# BOOTSTRAP RULES END',
         ]
 
-    if MANAGER.exists() and ctx['int_iface']:
+    if MANAGER.exists() and interfaces:
         port = manager_port()
         lines += [
             '',
             '# MANAGER RULES START',
-            f'-A ufw-before-input -i {ctx["int_iface"]} -p tcp --dport {port} -j ACCEPT',
+            *(f'-A ufw-before-input -i {name} -p tcp --dport {port} -j ACCEPT' for name in interfaces),
             '# MANAGER RULES END',
         ]