Novell NETWARE 6-DOCUMENTATION Manual page 2658

Table 13
Parameter
NCP Packet Signature Option =
number
Enable IPX Checksums = number
220 Utilities Reference
NCP Parameters
Use to
Control the NCP packet signature level on the server.
Supported values:
0 = Server doesn't sign packets (regardless of the client level)
1 = Server signs packets only if the client requests it (client level
is 2 or higher)
2 = Server signs packets if the client is capable of signing (client
level is 1 or higher)
3 = Server signs packets and requires all clients to sign packets
(or logging in will fail)
Default: 1
NCP Packet Signature prevents packet forgery on servers and
clients using NCP by requiring server and client to sign each NCP
packet.
Note: Because Packet Signature consumes processor resources
and slows performance on both client and server, NCP Packet
Signature is optional.
After starting the server, you can only increase the level of packet
signature. To decrease the level, you must add the SET
command to the startup.ncf file and restart the server.
You can set this parameter in the STARTUP.NCF file.
Enable IPX
Supported values:
0 = No checksums
1 = Checksum if enabled at the client
2 = Require checksums
Default: 1
You can set this parameter in the STARTUP.NCF file.
TM checksums.