Enable service discovery (mDNS)

Multicast DNS mDNS is a protocol that resolves host names in small networks that do not have a DNS server. You can enable the TX54 device to use mDNS.

Note This feature is enabled by default.

 Web

Log into Digi Remote Manager, or log into the local Web UI as a user with full Admin access rights.
Access the device configuration:
Remote Manager:
1. Locate your device as described in Use Digi Remote Manager to view and manage your device.
2. Click the Device ID.
3. Click Settings.
4. Click to expand Config.
Local Web UI:
1. On the menu, click System. Under Configuration, click Device Configuration.
  The Configuration window is displayed.
Click Services > Service Discovery (mDNS).
The mDNS service is enabled by default. To disable, click to toggle off Enable.
Enable the mDNS service.
Click Access control list to configure access control:
- To limit access to specified IPv4 addresses and networks:
  1. Click IPv4 Addresses.
  2. For Add Address, click .
  3. For Address, enter the IPv4 address or network that can access the device's mDNS service. Allowed values are:
    A single IP address or host name.
    A network designation in CIDR notation, for example, 192.168.1.0/24.
    any: No limit to IPv4 addresses that can access the mDNS service.
  4. Click  again to list additional IP addresses or networks.
- To limit access to specified IPv6 addresses and networks:
  1. Click IPv6 Addresses.
  2. For Add Address, click .
  3. For Address, enter the IPv6 address or network that can access the device's mDNS service. Allowed values are:
  4. Click  again to list additional IP addresses or networks.
- To limit access to hosts connected through a specified interface on the device:
  1. Click Interfaces.
  2. For Add Interface, click .
  3. For Interface, select the appropriate interface from the dropdown.
  4. Click  again to allow access through additional interfaces.
- To limit access based on firewall zones:
  1. Click Zones. By default, there are three firewall zones already configured: Internal, Edge, and IPsec.
  2. For Add Zone, click .
  3. For Zone, select the appropriate firewall zone from the dropdown.
    See Firewall configuration for information about firewall zones.
  4. Click  again to allow access through additional firewall zones.
Click Apply to save the configuration and apply the change.

 Command line

Select the device in Remote Manager and click Actions > Open Console, or log into the TX54 local command line as a user with full Admin access rights.
Depending on your device configuration, you may be presented with an Access selection menu. Type admin to access the Admin CLI.
At the command line, type config to enter configuration mode:
```
> config
(config)>
```
The mDNS service is enabled by default. To disable:

Enable the mDNS service:
```
(config)> service mdns enable false true
(config)>
```
Configure access control:
- To limit access to specified IPv4 addresses and networks:
```
(config)> add service mdns acl address end value
(config)>
```
  Where value can be:
  - A single IP address or host name.
  - A network designation in CIDR notation, for example, 192.168.1.0/24.
  - any: No limit to IPv4 addresses that can access the mDNS service.
  Repeat this step to list additional IP addresses or networks.
- To limit access to specified IPv6 addresses and networks:
```
(config)> add service mdns acl address6 end value
(config)>
```
  Where value can be:
  - A single IP address or host name.
  - A network designation in CIDR notation, for example, 2001:db8::/48.
  - any: No limit to IPv6 addresses that can access the mDNS service.
  Repeat this step to list additional IP addresses or networks.
- To limit access to hosts connected through a specified interface on the TX54 device:
```
(config)> add service mdns acl interface end value
(config)>
```
  Where value is an interface defined on your device.
  Display a list of available interfaces:
  Use ... network interface ? to display interface information:
  (config)> ... network interface ? Interfaces Additional Configuration ------------------------------------------- setupip Setup IP setuplinklocalip Setup Link-local IP lan1 LAN1 loopback Loopback wan1 WAN1 wwan1 WWAN1 wwan2 WWAN2 (config)>
  Repeat this step to list additional interfaces.
- To limit access based on firewall zones:
```
(config)> add service mdns acl zone end value
(config)>
```
  Where value is a firewall zone defined on your device, or the any keyword.
  Display a list of available firewall zones:
  Type ... firewall zone ? at the config prompt:
  (config)> ... firewall zone ? Zones: A list of groups of network interfaces that can be referred to by packet filtering rules and access control lists. Additional Configuration ------------------------------------------------------------------------------- any dynamic_routes edge external hotspot internal ipsec loopback setup (config)>
  Repeat this step to include additional firewall zones.
Save the configuration and apply the change.
```
(config)> save
Configuration saved.
>
```
Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection menu. Type quit to disconnect from the device.