SFP Modules for Grandstream Network Layer 2+ Managed Switches GWN780X(P) Series

SFP Module Grandstream Network Switches

Description SFP (Small Form-factor Pluggable) is a type of transceiver used in networking to connect a device, such as a router or switch, to a network. It is a small, hot-swappable module that sits inside a device and allows it to connect to different types of networks, such as Ethernet, Fibre Channel, or SONET. SFPs … Read more

Default Ports in Grandstream Networking GWN Access Points, Routers, and Switches


Description This article describes the usage of the default ports in Grandstream Networking GWN76XX access points, GWN70XX routers, and GWN78XX network switches. Wifi Access Points Ports Description 22 SSH 67 DHCP 53 DNS 5353 MDNS 80 or 443 LLMNR 8080 or 8443 Web Portal 9443 Vouchers Authentication 14 or 10014 GWN Manager 223 Mesh 224 … Read more

Public RADIUS Server Authentication with Grandstream GWN Access Points (Internal Splash Page)

Public Radius Server Grandstream GWN AP

Description This article describes how to set up the captive portal feature on the GWN76XX series using Public RADIUS authentication by idBlender. This is useful when you do not have the environment to install a separate server for testing and troubleshooting purposes. Step-by-step Go here to create an Wifi username and password 2. Click ‘Test … Read more

How to Configure Google Authentication in Grandstream GWN Access Points

Description This article shows the steps on how to configure Google Authentication in Grandstream GWN Access Points. The Release Note has a typo in specifying the Oauth URL path. Add Test Users Known Issue You may hit Error 403: disallowed_useragent when trying to connect to SSID and authenticate with iPhone or iPad. This is a … Read more

Firewall Rules in Granstream GWN 76XX Access Points

featured image Grandstream AP Firewall Rules

Description This article describes how to configure Firewall Outbound or Inbound Rules in Grandstream GWN76XX Access Points to permit or deny traffic based on SSID. When creating firewall rules, make sure that you do not include the protocol in the Domain Name field. For eg. www.grandstream.com instead of https://www.grandstream.com The More You Know You may … Read more

Granstream GWN76XX Access Point Event log: WPA-PSK deauthentication (four-way handshake failure)

Description: Sometimes you will notice that the Grandstream GWN76XX Access Point event log shows multiple messages of WPA-PSK deauthentication (four-way handshake failure) resulting in clients’ Wifi disconnection. When the client device’s RSSI is below -70dBm, it is scanning continuously to find a new AP to roam and connect to. At around -75dBm to -80dBm, the … Read more

Common Issues and Troubleshooting with GWN76XX Access Points

Description This guide summarises the common issue and troubleshooting methods listed in the official guide. Issue Troubleshooting Weak Signal 1. Increase APs for better coverage2. Increase Radio Power3. Lower Channel Bandwidth (20MHz)4. Stay close with the AP, get RSSI < 40dBm, and do the speed test.5. Select 2.4GHz as it penetrates through hard objects better … Read more