Check: GEN003601
HP-UX 11.31 STIG:
GEN003601
(in versions v1 r19 through v1 r13)
Title
TCP backlog queue sizes must be set appropriately. (Cat II impact)
Discussion
To provide some mitigation to TCP Denial of Service (DoS) attacks, the TCP backlog queue sizes must be set to at least 1280 or in accordance with product-specific guidelines.
Check Content
Check the value of the tcp_syn_rcvd_max parameter. # ndd -get /dev/tcp tcp_syn_rcvd_max If the returned value is less than 1280, this is a finding.
Fix Text
Set the tcp_syn_rcvd_max parameter to 1280. # ndd -set /dev/tcp tcp_syn_rcvd_max 1280 Edit /etc/rc.config.d/nddconf and add/set: TRANSPORT_NAME[x] = tcp NDD_NAME[x] = tcp_syn_rcvd_max NDD_VALUE[x] = 1280
Additional Identifiers
Rule ID: SV-29690r1_rule
Vulnerability ID: V-23741
Group Title: GEN003601
Expert Comments
Expert comments are only available to logged-in users.
CCIs
CCIs tied to check.
Number | Definition |
---|---|
CCI-000366 |
The organization implements the security configuration settings. |
Controls
Controls tied to check. These are derived from the CCIs shown above.
Number | Title |
---|---|
CM-6 |
Configuration Settings |