Ntp check - " can't create socket connection"

I’m getting this error message on 8 Solaris 10 SPARC servers. I’ve verified that ntp is active and online. This fails whether I run it locally or through nrpe from the nagios host. Any thoughts or suggestions are welcome.

TIA,

Bill

Some particualr firewall setup? (if you don’t have an explicit localhost -> accept rule this could happen)