This article explains how to create a 3G/UMTS interface on the Sophos UTM.
Supported USB Cellular modem devices may be connected to a USB port on the UTM, and used as an internet connection. Typical Uses:
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 Sophos UTM Manager
Interfaces may be added and edited in the WebAdmin interface under: Interfaces & Routing | Interfaces | Interfaces.
INIT String: If necessary, additional or alternate dial commands may be supplied for initializing the modem before dialing
Reset String: If necessary, additional or alternate control commands may be supplied for initializing the modem when disconnecting
MTU: Dial-UP RAS servers typically use an MTU of 576. Setting the value to 576 may improve performance for this connection type.
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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