This article explains how to create a DSL (PPPoE) Ethernet interface on the Sophos UTM.
Some internet connections (typically DSL internet connections) require the PPPoE type connections to be used. PPPoE uses the PPP protocol, similar to dialup modems, but over a standard Ethernet connection. ISPs may prefer this type of connection, as it allows them to use username and password authentication to control access to the provider network. This should only be used if required by the provider. Use this interface type when you are:
Do NOT use this interface type if:
This article focuses on a single interface type. To learn more about other interface types, please view KB article 118899.
Known to apply to the following Sophos product(s) and version(s) Sophos UTM
Interfaces may be added and edited in the WebAdmin interface under: Interfaces & Routing | Interfaces | Interfaces.
MTU: The default value of 1492 is the typical value required for DSL connections. It may be apropriate to change this if connecting to ISPs that require smaller MTU values.
Daily Reconnect: DSL conections must reconnect periodically. This setting allows admins to control exactly when that reconnection will occur. By choosing a time that will be non-disruptive to network users, unexpected internet interruptions can be avoided.
Reconnect Delay: During the daily reconnect, the system will wait the specified amount of time after disconnecting, before attempting to reconnect to the provider. This setting has no effect unless Daily Reconnect is enabled, and usually does not need to be changed. In some rare cases, the provider may not behave well if the client connects too quickly after disconnecting. In these cases, it may be necessary to extend the reconnect interval.
Displayed max: (Optional) The displayed max value is a numeric field that is used for display purposes only. Entering the correct value in this field to match the available bandwidth provided on this link, allows the UTM to show accurate percentage graphs for each interface on dashboard. This has no impact on network behavior, as it is only used for display purposes.
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