Troubleshooting/FAQ
7.4 Instructions for secure network design
SCALANCE W760/W720 to IEEE 802.11n Web Based Management
240 Configuration Manual, 11/2014, C79000-G8976-C350-03
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Protect your network from man-in-the-middle attacks
To protect your network from man-in-the-middle attacks, a network setup is
recommended that makes it more difficult for the attacker to access the communications
path between two end devices.
– You can, for example, protect WLAN devices by arranging so that the Agent IP is only
accessible via a single management VLAN. For more detailed information, refer to the
section "Agent IP (Page 112)".
– A further option is to install a separate HTTPS certificate on the WLAN client / access
point. The HTTPS certificate checks the identity of the device and controls the
encrypted data exchange. You can install the HTTPS certificate, for example using
HTTP. For more detailed information, refer to the section "Load&Save (Page 119)".
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SNMPv3 provides you with highest possible security when accessing the WLAN devices
via SNMP. For more detailed information, refer to the section "SNMP (Page 139)".
Changing the default password after configuring with STEP 7
If a device in the default status is configured only with STEP 7, it is not possible to change
the default password. This change must be made directly on the device using WBM or CLI.
Otherwise the default password is retained and any user could log in using the default
password.
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