10-31-2018 12:38 PM - edited 02-21-2020 08:25 AM
NOTE: IP and other information posted has been changed from actual config...
I have a firewall where ASDM put in the following statement when somebody was setting up/configuring the firewall.
asdm location 192.168.0.0 255.255.255.0 outside
However, the firewall interface on that subnet is assigned to the inside interface, see below.
interface GigabitEthernet0
description LOCAL LAN
nameif inside
security-level 100
ip address 192.168.0.1 255.255.255.0
For the most part, this firewall is functioning. There are some odds and ends that aren't functioning properly. One in particular is a logging statement similar to the following.
logging host outside 172.16.0.199 17/5804
On the above referenced host we are receiving syslog messages. However, they are coming in on the default, UDP 514. In short, my question is the fact that the ASDM location for the 192.168.0.0/24 subnet going to cause any problems?
10-31-2018 05:35 PM
Hi,
"Asdm location" is added by ASDM. You should not be adding this command manually.
https://www.cisco.com/c/en/us/td/docs/security/asa/asa-command-reference/A-H/cmdref1/a3.html
What is the rest of the logging configuration. Is the syslog server listening on port 5804 and 514?
Thanks
John
11-01-2018 07:21 AM - edited 11-01-2018 07:22 AM
Thank you. I am aware that the ASDM location statement is automatically added and should not be modified manually.
Below are the logging statements currently configured.
logging enable
logging timestamp
logging buffered debugging
logging trap informational
logging asdm informational
The syslog host is only listening on port 5804. I ran a packet capture on the host and I see syslog traffic originating from the firewall, but the destination port of the traffic is 514. As the syslog server is not configured to listen on 514, it is returning ICMP type 3 destination port unreachable messages to the firewall.
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide