VPNC + PAN-OS 7.1

[BrentAddis]

Does anyone use vpnc (As in the linux ipsec client) with xauth connecting to a PA?

We have a bunch o' PA's which we are in the middle of upgrading to 7.1 however once an upgrade from 7.0.6 to 7.1 is done, VPNC will no longer connect. Downgrading back to 7.0.6 again allows VPNC to connect.

The error in the logs is (ISAKMP_N_ATTRIBUTES_NOT_SUPPORTED)(13) which is not particularly informative. I have checked the globalprotect config and verified it is the same as our PA's running 7.0.6. At this point I have had to roll back the upgrade which has brought VPNC again into a working state.

[Remo · Accepted solution]

sound like the following bug which is fixed in PAN-OS 7.1.2:

[pankaku · Accepted solution]

Use following command to resolve the issue:

 set cli config-output-format set

configure

show | match "client-auth"

Now in output of last command you will get a line as follows:

set global-protect global-protect-gateway <gateway_name> client-auth <client_auth_name> os any

Change "any" to Any

set global-protect global-protect-gateway <gateway_name> client-auth <client_auth_name> os Any

commit

Hope this helps!

[CFettig · Accepted solution]

An additional work-around is to create an authentication reference pointed to the same authentication profile as the "Any" line specifically for X-Auth. The below worked in my proof-of-concept lab where I am testing 7.1.2.

EDIT: The orginal bug is indeed fixed in 7.1.2, however the bug-fix was not applied in my POC lab since I was upgrading from earlier 7.1 code. To truly fix the "Any" OS option if you find yourself in a similar corner-case rollback to 7.0.x and then re-upgrade to 7.1.2(+) so the migration script can slipstream the bugfix in.