Detections
Analytics
AIX7-00-001004 - AIX must limit the number of concurrent sessions to 10 for all accounts and/or account types.
Information
Operating system management includes the ability to control the number of users and user sessions that utilize an operating system. Limiting the number of allowed users and sessions per user is helpful in reducing the risks related to DoS attacks.Solution
From the command prompt, execute the following command to set "maxulogs=10" for the "default:" stanza in the "/etc/security/user" file:# chsec -f /etc/security/user -s default -a maxulogs=10
For each user account whose "maxulogs" value is greater than "10", or their "maxulogs" value is not set, or the values are set to "0", execute the following command to set "maxulogs=10":
# chuser maxulogs=10 [user_name]
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_IBM_AIX_7-x_V3R2_STIG.zip
Item Details
Audit Name: DISA IBM AIX 7.x STIG v3r2
Category: ACCESS CONTROL
References: 800-53|AC-10, CAT|II, CCI|CCI-000054, Rule-ID|SV-215172r958398_rule, STIG-ID|AIX7-00-001004, STIG-Legacy|SV-101327, STIG-Legacy|V-91227, Vuln-ID|V-215172
Plugin: Unix
Control ID: dabbc0feb7d3947d2499dd652d329b6c3021db7fba03fdf99e105de52d6278cd