From a message I sent to the list a few days ago, which worked for at least some people:
>>> I was in a slightly different situation (linux, slaves launched manually), but had the 403 as well. Fixed by going to Manage Jenkins -> Configure Global Security, and under Project-based Matrix Authorization Strategy I had to enable “connect” in the “slave” section, for user “Anonymous”. <<< I’m not sure if that address your problem, of what the security implications are, but anyhow … Matthew Webber From: jenkinsci-users@googlegroups.com [mailto:jenkinsci-users@googlegroups.com] On Behalf Of stuart.gr...@doccentrics.com Sent: 11 January 2013 10:39 To: jenkinsci-users@googlegroups.com Subject: Re: JNLP slave no longer works Thanks for the info, but how is this change applied to a linux slave? On Tuesday, 8 January 2013 02:50:39 UTC, Kohsuke Kawaguchi wrote: This is unfortunately a necessary measure. See the "Fix" section in https://wiki.jenkins-ci.org/display/SECURITY/Jenkins+Security+Advisory+2013-01-04 -- Kohsuke Kawaguchi