
ClearPass Guest 3.9 | Deployment Guide Reference | 491
Authentication Module Configuration
thread.max_requests_per_server = 0 Set the maximum number of requests a server should handle before
exiting. Zero is a special value meaning “infinity”, or “the servers never
exit”.
thread.max_queue_size = 65536 Set the maximum number of incoming requests which may be queued for
processing. After the queue reaches this size, new requests are dropped.
The default value is recommended for most deployments. Do not change
the default value unless you have a specific requirement.
Table 60 Authentication Module Configuration Settings
Value Description
module.pap = yes PAP module to authenticate users based on their stored password.
pap.encryption_scheme = crypt The PAP module supports multiple encryption schemes:
clear: Clear text
crypt: Unix crypt
md5: MD5 encryption
sha1: SHA1 encryption
module.chap = yes Authenticates requests containing a CHAP-Password attribute.
module.pam = yes Pluggable Authentication Modules for Linux.
module.unix = yes Unix /etc/passwd style authentication.
unix.cache = no Cache /etc/passwd, /etc/shadow, and /etc/group for authentication. The
default is to not cache them. Allowed values: no, yes
unix.cache_reload = 600 If the cache is enabled, reloads its contents every ‘cache_reload’ seconds.
Use 0 to disable.
module.mschap = yes Microsoft CHAP authentication.
This module supports MS-CHAP and MS-CHAPv2 authentication. It also
enforces the SMB-Account-Ctrl attribute.
mschap.use_mppe = no If ‘use_mppe’ is set to ‘yes’, the mschap module will add MS-CHAP-MPPE-
Keys for MS-CHAPv1 and MS-MPPE-Recv-Key/MS-MPPE-Send-Key for
MS-CHAPv2.
mschap.require_encryption = yes If ‘use_mppe’ is enabled, ‘require_encryption’ makes encryption moderate.
mschap.require_strong = yes ‘require_strong’ always requires 128 bit encryption.
mschap.with_ntdomain_hack = no Windows sends us a username in the form of DOMAIN\user, but sends the
challenge response based on only the user portion. This workaround
corrects for that incorrect behavior.
Table 59 Thread Pool Settings (Continued)
Value Description
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