topic Re: Cisco ASA pinging tools.cisco.com using IPv4 in Network Security

Cisco ASA pinging tools.cisco.com using IPv4

latenaite2011 — Tue, 02 Nov 2021 00:28:00 GMT

Hi Everyone,

Does anyone know how to force the Cisco ASA to ping tools.cisco.com using IPv4? The WAN/External interface has both IPv4 and IPv6 configured and when pinging tools.cisco.com from the ASA directly, it defaults to IPv6, see below for output (actual address masked):

firewall# ping tools.cisco.com
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 20XX:XXX:XXXX:X::Xa, timeout is 2 seconds:
?????
Success rate is 0 percent (0/5)

Not sure how to make it use IPv4 and I think this is causing the Call-home feature to fail.

Thanks!

Re: Cisco ASA pinging tools.cisco.com using IPv4

latenaite2011 — Tue, 02 Nov 2021 00:55:04 GMT

Looks like the call-home section doesn't have a http option to force it to use IPv4 or there is a way to configure a destination address with a fqdn using an IP address.

Re: Cisco ASA pinging tools.cisco.com using IPv4

latenaite2011 — Tue, 02 Nov 2021 01:20:18 GMT

This has been fixed by configuring a public DNS server.