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1MRS757105 B
Section 4
4.1
4.2
RER601/603
Technical Manual
Cyber security
Cyber security aims to secure the properties of the organization against security
risks. To strengthen the system and increase the security level towards any cyber
security attacks from the Internet, certain actions are recommended while
configuring the device.
•
The device should be installed physically secure, for example, in a locked
cabinet.
•
The latest security updates need to be installed for all network devices.
•
The network inventory needs to be documented and kept up to date.
•
Unused services and interfaces should always be disabled.
•
Only VPN connections should be used to access remote networks.
Enhancing operator and subscription security
Network subscription and SIM card must be stored safely and configured to
prevent misuse of services.
•
Disable unused services from SIM cards.
•
Voice calls
•
SMS
•
Paid services
•
Roaming
•
Use pin code in SIM cards.
•
Prefer a private APN service from the operator.
•
Prefer M2M subscription SIM cards from the operator.
•
Use private IP addressing from the operator for GPRS communications.
•
If connected to a public IP network, do not use plain text protocols such as
http, SNMP and telnet. Always use VPN to connect to the device.
Configuring firewall and services
Enable the firewall and disable the unused services and interfaces in the device. To
start, disallow traffic and allow only the needed traffic. Use the default policy to
drop connections.
Section 4
Cyber security
19
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