No login banner
At a glance
Base severity
Area
Platform
Evidence level
Benchmark reference
Reads the export, not the device
ConfigProof reads a configuration export. This control is evaluated against the objects in that file, and it reports what the file says. It does not connect to the device and sees no traffic, so a finding here describes the configuration, not what the firewall is doing right now.
Why it matters
Without a warning of authorized use, legal action against unauthorized access can be harder in some jurisdictions.
How to fix it
Web interface
The steps below are written for the web interface. A finding raised on your own export carries the same steps with your object names filled in.
- Configure banner login with your organization's authorized-use notice.
Command line
Cisco IOS-XE CLI
configure terminalbanner login ^C <banner-text> ^Cendwrite memory
An example. Values in angle brackets are yours to supply; a finding on your own export fills in the names it read. Typed in configuration mode; copy running-config startup-config saves it, with no separate commit. Read every line first.
Read it back
show banner loginValues to fill in1
- <banner-text>
- Your organization's authorized-use notice
Before you type it1
- Written from the Cisco IOS-XE 17 and NX-OS 9 and 10 command references and not run on a device: read each line before you paste it.
How to confirm the fix
- show banner login shows the notice.
Limits
- No limitation is recorded for this control beyond the one that applies to all of them: it reads a configuration export.
Compliance references
CIS Cisco IOS 17.x Benchmark v2.0.0
Covers part of the recommendation
Where a control aligns with a recommendation of the CIS Cisco IOS 17.x Benchmark v2.0.0, that recommendation is cited as a reference. Only that version was checked. A reference is not a certification.
More in Administrators and Access
- SW-MGT-002Management lines open to any source address
- SW-MGT-003Management session timeout disabled or long
- SW-MGT-004SSH version 1 not refused
- SW-MGT-005Plain HTTP management enabled
- SW-MGT-006Enable password stored in clear text or reversible form
- SW-MGT-007Password hashed with MD5 (type 5)
- SW-MGT-008Local account password stored in clear text or reversible form
- SW-MGT-012Management line without authentication
See it on your own firewall
One complete analysis of one firewall costs nothing. A card is required and nothing is charged.