Markus Illenseer <markus@core.de> typed:
:root@beaver:/usr/pkgsrc#setenv CVS_RSH ssh
:root@beaver:/usr/pkgsrc#cvs update -P -d
:Secure connection to anoncvs.netbsd.org refused; reverting to insecure method.
:Using rsh.  WARNING: Connection will not be encrypted.
:^Ccvs [update aborted]: received interrupt signal
: What am I doing wrong? Would standard rsh work though?

ssh is having problems on anoncvs.  Try pserver method:

% cvs -d :pserver:anoncvs@anoncvs.netbsd.org:/cvsroot login
(Logging in to anoncvs@anoncvs.netbsd.org)
CVS password: anoncvs<RETURN>
% cvs -d :pserver:anoncvs@anoncvs.netbsd.org:/cvsroot update -dP

Regards,
Geoff