Knowledge Center

LAN/Internet

Depending on your Synology NAS model and network settings, you can configure DHCP settings for LAN or Internet at Control Panel > Network > Network Interface. DHCP is a network protocol for automatic IP configuration. To let DHCP assign an IP for the system, click Edit and choose Get network configuration automatically (DHCP) under the IPv4 tab.

If you are using a specific IP address from your network service provider, choose Use manual configuration and manually enter the IP address and subnet mask. If a DNS server or a default gateway is not available, leave the field blank.

Note:

  1. To make sure the email notifications are delivered correctly through the SMTP server, a valid DNS server IP should be entered.
  2. Jumbo Frames are Ethernet frames with more than the standard 1500 bytes of Maximum Transmission Unit (MTU), allowing Ethernet transmission of large files to be more efficient. It can only be enabled under Gigabit network environment. To ensure Jumbo Frame works properly, all the computers and devices across the network accessing your Synology NAS must support it and use the same MTU value.

VLAN

When the network environment requires VLAN settings, you can enable the VLAN option and enter a VLAN ID for the network environment under the IPv4 tab in the Edit window.

Note:

  • Make sure your network switch is properly configured, otherwise the service of your Synology NAS might become inaccessible.
  • If you cannot connect to your Synology NAS after modifying the above settings, please press the RESET button located on your Synology NAS in order to restore default settings.

IPv6 Setup

Synology NAS devices support IPv4/IPv6 dual stack schemes. This means that both IPv4 and IPv6 can work simultaneously on your Synology NAS. The default settings for IPv6 is Auto. Select an existing network interface, click the Edit button, and go to the IPv6 tab to change settings.

To configure IPv6 settings:

  1. Go to Control Panel > Network > Network Interface.
  2. Select an existing network interface and click Edit.
  3. Under the IPv6 tab, select a setup type from IPv6 setup:
    • Auto: Your Synology NAS will automatically generate an IPv6 address depending on the LAN Router Advertisement (RA).
      • Stateless mode: Allow devices connected to the router to automatically configure an IPv6 address without setting IPv6 DNS server.
      • Stateless DHCPv6 mode: Allow devices connected to the router to automatically configure an IPv6 address and obtain DNS information via DHCPv6.
      • Stateful mode: Allow devices connected to the router to obtain IPv6 address and DNS information via DHCPv6. In this mode you have to enable DHCPv6 server and set the Start IP address and End IP address of the DHCPv6 server.
    • Manual: Manually set up IPv6 by entering information into IPv6 address, Prefix length, and Default gateway.
    • Off: Disable IPv6 support.

Until IPv6 completely supplants IPv4, IPv6 transition mechanisms are needed to enable hosts with IPv4 addresses to reach IPv6 services. Choose among the different IPv6 transition mechanisms:

  • 6in4: Connect to the IPv6 network through a tunnel broker. You will need to fill in IPv6 address, Prefix length, Prefix, and Tunnel broker IPv4 address. This requires a public IPv4 address.
  • 6to4: Connect to the IPv6 network through a tunnel broker utilizing anycast. This requires a public IPv4 address.
  • DHCP-PD: Obtain an IPv6 prefix from the DHCP server via prefix delegation within the LAN. This requires ISP support and only works in router mode.
  • IPv6 Tunneling (TSP): Go to Control Panel > Network > General to configure this option.

802.1X

802.1X is an authentication standard developed by the IEEE for user connection networks. 802.1X can be used in networks to authenticate the client, not allowing clients that have not successfully passed authentication to access the protected network.

You can allow your Synology NAS to connect to the network protected by 802.1X authentication.

To enable 802.1X authentication:

  1. Go to Control Panel > Network > Network Interface.
  2. Select a wired network interface (i.e. LAN) and click Edit.
  3. Go to 802.1X tab and check Enable 802.1X authentication.
  4. Select one of the following protocols from the Authentication drop down menu. If you are unsure which protocol is the most suitable, select Auto.     
    • Protected EAP (PEAP): Use a CA certificate (optional) to establish a secure connection. This secure connection will be used by the inner authentication.
    • Tunneled TLS (TTLS): Use a CA certificate (optional) to establish a secure connection. This secure connection will be used by the inner authentication.
    • TLS: use TLS (Transport Layer Security) to authenticate.
  5. If you choose TTLS or PEAP, you select one of the inner authentication protocols from the drop down menu.
    • MS CHAP v2: Authentication information will be encrypted with Microsoft CHAP v2.
    • GTC: Authentication information will use GTC (Generic Token Card) for encryption.
  6. Enter your username and password.
  7. If required, click Import, then Browse to find and import a certificate exported from Radius server (For example ca.crt).
  8. Click OK to save your settings.

Note:

  • Authentication settings must be the same as the set Radius Server. For more information, please contact the Radius Server administrator.
VLAN
IPv6 Setup
802.1X