diff --git a/isp_box_config.md b/isp_box_config.md
index 4ba64c2d..9aa93367 100644
--- a/isp_box_config.md
+++ b/isp_box_config.md
@@ -1,29 +1,31 @@
-#Configuration box/router
+# Configuration box/router
 
-####Access to box/routeur administration
+#### Access to box/routeur administration
 In the URL bar of your web navigator put:
 ```bash
 192.168.0.1 or 192.168.1.1
 ```
 Then you will need to authentificate.
 
-####Opening ports
+#### Opening ports
 Opening following ports are necessary to make works differents services.
 
-TCP : 22, 25, 53, 80, 443, 465, 993, 5222, 5269, 5290
+**TCP:**
+* Web: 80, 443
+* [SSH](/ssh_en): 22
+* [XMPP](/XMPP_en): 5222, 5269
+* [Email](/email_en): 25, 465, 993
+* [DNS](/dns_en): 53
 
-#####UPnP
+##### UPnP
+UPnP permit opening automatically ports.
 
-L’UPnP permit opening automatically ports.
-
-In some case, after changing your box configuration (ex: add IPv6, or unlock SMTP ... ) and a reboot. It happens that ports are no onger opened. So you have to reload your firewall configuration :
+In some case, after changing your box configuration (ex: add IPv6, or unlock SMTP ... ) and a reboot. It happens that ports are no onger opened. So you have to reload your firewall configuration:
 
 ```sudo yunohost firewall reload```
 
-#####Manual opening ports
-
+##### Manual opening ports
 In the case that UPnP doesn’t works, manual opening ports are necessary.
 
-#####Email
-
+##### Email
 Internet service porviders blocks port 25 to avoid spam. To send mails, you’ll need to open port 25.