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Attribute Type Default value Description

Enable DWORD 0x00000000 Disables (0) or enables (1) RAS Server

StartupDelaySeconds DWORD 0x00000000 Specifies the wait time after boot, before the RAS Server is

being started.

UseDHCPAddresses DWORD 0x00000000 Disables (0) or enables (1) the use of DHCP addresses for

clients. Should be used if the CE device contains an internal

DHCP Server software.

UseAutoIpAddresses DWORD 0x00000000 See explaination above

AutoIpSubnet DWORD 0xC0A80000 Subnet IP for AutoIp configuration. The hexadecimal value

is determined according to the calculations below.

AutoIpSubnetMask DWORD 0xFFFF0000 Subnet Mask for AutoIp configuration. The hexadecimal

value is determined according to the calculations below.

StaticIpAddrStart DWORD 0xC0A8FE01 First IP Address for Static configuration. The hexadecimal

value is determined according to the calculations below.

StaticIpAddrCount DWORD 0x000000FE Amount of IP Addresses for static configuration.

AuthenticationMethods DWORD 0x00400000 Discussed in more detail below

Flags DWORD 0x00000000 Discussed in more detail below

The value of each IP address related attribute is determined according to the binary and hexadecimal rep-

resentation of the address. An IP address consists of 4 values, each value equals 1 byte or rather 8 bits.

Therefore the hexadecimal value of this IP address can be derived directly from the binary representation

by converting every 4 bits to hex, for example:

IP address 192.168.0.1

Binary 11000000.10101000.00000000.00000001

Hexadecimal C0.A8.00.01 à0xC0A80001

The following table shows some examples for common IP subnets addresses.

Subnet IP Subnet Mask Value IP (Hex) Value Mask (Hex)

192.168.0.0 255.255.255.0 0xC0A80000 0xFFFFFF00

192.168.1.0 255.255.255.0 0xC0A80100 0xFFFFFF00

192.168.2.0 255.255.255.0 0xC0A80200 0xFFFFFF00

172.16.0.0 255.255.0.0 0xAC100000 0xFFFF0000

The attribute AuthenticationMethods configures the RAS Server for the usage of different protocols for client

authentication. Please note that this value configures protocols which should be prohibited by the Server!

That means, if a client tries to establish a RAS connection with an authentication protocol which is prohibited

by the server, the connection fails.

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Beckhoff IPC-Security Manual do Utilizador Página 45