DNS servers used do not match across cluster members-cisco-asa
Vendor: cisco
OS: asa
Description:
Indeni will identify when two devices are part of a cluster and alert if the DNS servers they are using are different.
Remediation Steps:
Review the DNS configuration on each device to ensure they match.
How does this work?
This script login into the ASA using SSH and retrieves the DNS servers configuration by using the output of the “show running-config dns” command. The output includes the list of the device’s DNS configured servers.
Why is this important?
This metric shows the list of the configured DNS servers. DNS allows a device to resolve a name to an IP address. For example, an application or website may be associated with many IP’s and DNS allows the client to use a name or FQDN to reach it. If a device is clustered then it would be expected to have the same DNS servers configured on all members of the cluster.
Without Indeni how would you find this?
An administrator would need to login into the device and use the “show running-config dns” command to identify if the DNS servers are configured.
cisco-asa-dns-servers
name: cisco-asa-dns-servers
description: ASA dns configured servers
type: monitoring
monitoring_interval: 30 minutes
requires:
vendor: cisco
os.name: asa
privileged-mode: 'true'
comments:
dns-servers:
why: |
This metric shows the list of the configured DNS servers. DNS allows a device to resolve a name to an IP address. For example, an application or website may be associated with many IP's and DNS allows the client to use a name or FQDN to reach it. If a device is clustered then it would be expected to have the same DNS servers configured on all members of the cluster.
how: |
This script login into the ASA using SSH and retrieves the DNS servers configuration by using the output of the "show running-config dns" command. The output includes the list of the device's DNS configured servers.
can-with-snmp: false
can-with-syslog: false
steps:
- run:
type: SSH
file: asa-dns-servers.remote.1.bash
parse:
type: AWK
file: asa-dns-servers.parser.1.awk
cross_vendor_dns_servers_comparison
Failed to fetch the data: https://bitbucket.org/indeni/indeni-knowledge/src/master/rules/templatebased/crossvendor/cross_vendor_dns_servers_comparison.scala