Beckhoff IPC-Security Instrukcja Użytkownika Pobierz pdf (Strona 46)

Protocol Value (Hex) Information

PAP 0x00040000 Password for authentication is being transmitted in clear-text! In-

secure!

CHAP 0x00080000 Uses a random value, together with the password, for creating a

one-way hash value which is being transmitted to the server for

authentication.

MS-CHAP 0x00100000 This is Microsoft’s implementation of CHAP. It provides several

enhancements to standard CHAP.

MS-CHAP v2 0x00200000 This is version 2 of the MS-Chap protocol. It provides mutual

authentication between peers. This protocol should be used!

EAP 0x00400000 Developed by the IETF. Supports several authentication mech-

anisms like RADIUS, certificates, … . However, this usually im-

plies other software packages to be installed on the CE device

and is therefore disabled by default.

To prohibit more than one protocol, you need to interpret the hexadecimal value like a bitmask and add the

bit-wise values. For example:

Protocols to prohibit PAP, CHAP, MS-CHAP

PAP value binary 0000 0000 0000 0100 0000 0000 0000 0000

CHAP value binary 0000 0000 0000 1000 0000 0000 0000 0000

MS-CHAP value binary 0000 0000 0001 0000 0000 0000 0000 0000

Overall binary value (sum) 0000 0000 0001 1100 0000 0000 0000 0000

Hex value to configure 0x001C0000

The Flags attribute configures if the RAS Server should allow any of the following features. Any of these

features can be combined by setting the appropriate bitmask value (similar to the procedure from above).

Feature Value

(Hex)

Information

Data Encryption 0x01 Requires data encryption, if set

Unauthenticated Access 0x02 Allows unauthenticated access, if set

Use of VJ header compression 0x04 Prevents the use, if set

Use data compression 0x08 Prevents the use, if set

Configure a modem connection

You can use a to the CE device attached modem for enabling incoming dial in connections. Therefore, the

resulting connection is a point-to-point communication via the telephone network.

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Beckhoff IPC-Security Instrukcja Użytkownika Strona 46