Proposed F19 Feature: GSS Proxy
jreznik at redhat.com
Mon Jan 28 10:02:32 UTC 2013
= Features/gss-proxy =
Feature owner(s): Simo Sorce <ssorce at redhat.com>, Günther Deschner
<gdeschner at redhat.com>
The main purpose of this project is to replace rpc.svcgssd(8), the server-side
The gss-proxy consists of a standardized RPC protocol, a client and server
implementation with other future components. The gss-proxy protocol allows
proxying of GSSAPI initiation and authentication.
== Detailed description ==
The goal is to have a GSS-API proxy, with standardizable protocol and a
[somewhat portable] reference client and server implementation. There are
several motivations for this some of which are:
- Kernel-mode GSS-API applications (CIFS, NFS, AFS, ...) need to be
able to leave all complexity of GSS_Init/Accept_sec_context() out of
the kernel by upcalling to a daemon that does all the dirty work.
- Isolation and privilege separation for user-mode applications. For
example: letting HTTP servers use but not see the keytab entries for
HTTP/* principals for accepting security contexts.
- Possibly an ssh-agent-like SSH agent for GSS credentials -- a
In order to use the gssproxy only the gssproxy daemon has to be started at
boottime. Once this is done, the GSSAPI mechglue library will make sure all
GSSAPI calls issued by an application are directed to the gssproxy service
transparently. Depending on the configuration of the system, the gssproxy
daemon will then allow or disallow access to cryptographic keys stored in
keytabs on the system.
Two major features that are planned to be achieved for Fedora19:
- rpc.gssd, the NFS client application, should be enabled to use the gssproxy.
It will be possible to aquire tickets for kerberized NFS mounts given user
- gssproxy will offer Kerberos ticket renewal when user keytabs are available
More information about the devel-announce