Cisco NX-OS
TMA-CISCO-NXOS-1.2.2
Configure IP Blocking on Failed Logins
Beschreibung
After a configured number of failed logins in a set window, offending IP addresses should be blocked from login for a configured amount of time. This effectively makes brute force attacks much less practical, slowing automated processes from a rate of multiple attempts per second to per minute ranges. CIS marks this Manual; automated as a config-line check. Audited against the output of 'show running-config' (run 'terminal length 0' first; do not use 'show running-config all', which adds default values).
So wird geprüft
Prüfmethode: Konfigurationsmuster
- Muster
(?m)^login block-for \d+ attempts \d+ within \d+
So wird behoben
Behebungsmethode: Anleitung oder Infrastruktur-Patch
! This configuration consists of: - A "watch" time window (in seconds) - the number of failed attempts to trigger on - the amount of time (in seconds) to block further login attempts from that IP address For NX-OS 7.x: login block-for <block time window> attempts <fail count> within <detect time window> for instance: login block-for 120 attempts 5 within 120 For NX-OS 9.x: system login block-for <block time window> attempts <fail count> within <detect time window> for instance: system login block-for 120 attempts 5 within 120 Any values at all will thwart most brute force or dictionary attacks.
Eigenschaften
- Betriebssysteme
- Beliebig
- Tags
- cisco-nxosnetworklogging
- Referenz
- CIS Cisco NX-OS Benchmark v1.2.0 - 1.2.2 Configure IP Blocking on Failed Logins
Diesen Host prüfen
Führen Sie dies auf einem Rechner aus, den Sie prüfen dürfen. Der Scan ist schreibgeschützt.
tmaegis scan --target cisco-nxos