Fix content audit findings across Serveex, Nonsense and recycled guides

content/en/3.serveex/4.monitoring/5.upsnap.md

@@ -101,32 +101,25 @@ We assume you've created a subdomain in your [DNS zone](/general/networking/dns)
 ::
 
 ::steps{level="3"}
-### Add UpSnap's network to SWAG
+### Make the host reachable from SWAG
 
-Go to Dockge, and edit the SWAG compose by adding the UpSnap network:
+UpSnap runs with `network_mode: host` (needed for Wake-on-LAN broadcasts and network scanning to work reliably), so it never joins a Docker network SWAG could attach to like other stacks. Instead, give SWAG a way to reach the host itself:
 
 ```yaml [compose.yaml]
 ---
 services:
   swag:
     container_name: # ...
-      # ... 
-    networks:                       # Connects the container to the custom network 
-      # ...           
-      - upsnap                       # Network name declared in the stack
-    
-networks:                            # Defines the custom network
-  # ...
-  upsnap:                 # Network name declared in the stack
-    name: upsnap_default             # Actual name of the external network
-    external: true                   # Indicates it's an external network
+      # ...
+    extra_hosts:
+      - "host.docker.internal:host-gateway"   # resolves to the Docker host's own IP
 ```
 
 Restart the stack by clicking "deploy" and wait for SWAG to be fully operational.
 
 ::note
 
-Here we assume the network name for upsnap is `upsnap_default`. You can check the connection in the SWAG dashboard at `http://yourserverip:81`.
+`host-gateway` is a special value Docker resolves to the host machine's IP automatically, so this works regardless of your server's actual address.
 ::
 
 ### Create the subdomain.conf file
@@ -184,7 +177,7 @@ server {
 
         include /config/nginx/proxy.conf;
         include /config/nginx/resolver.conf;
-        set $upstream_app upsnap;
+        set $upstream_app host.docker.internal;
         set $upstream_port 8095;
         set $upstream_proto http;
         proxy_pass $upstream_proto://$upstream_app:$upstream_port;
@@ -262,7 +255,7 @@ server {
 
         include /config/nginx/proxy.conf;
         include /config/nginx/resolver.conf;
-        set $upstream_app upsnap;
+        set $upstream_app host.docker.internal;
         set $upstream_port 8095;
         set $upstream_proto http;
         proxy_pass $upstream_proto://$upstream_app:$upstream_port;