On Mon, 2007-01-08 at 15:45 -0500, Paul Moore wrote: > On Monday, January 8 2007 3:31 pm, Eric Paris wrote: > > > 3. Toggle to accept or reject unlabeled packets. > > > Dan has completed this. He added a boolean, allow_unlabeled_packets, > > > to selinux policy. Currently, because of a problem in lspp60 > > > kernel, boolean does not work. I tested the boolean on > > > upstream kernel from kernel.org, 2.6.20-rc3-git4 and the boolean > > > worked great and as expected. (See #5 below as to why > > > it did not work in lspp60.) > > > > can paul make sure this works for NetLabel as well (since 5 shouldn't be > > applicable to NetLabel)? > > I'll verify that this still works on lspp.60 but I have no reason to believe > it wouldn't. The way NetLabel allows/denies non-NetLabel packets is > different from IPsec. > > When SELinux receives a packet it queries NetLabel to see if there are any > NetLabel related security attributes attached to the packet; there are three > possible results from this query: > > 1. security attributes are present - query function returns success populates > a structure with the NetLabel security attributes > > 2. security attributes are not present and the unlabeled flag is set to > allow - query function returns success and the security attribute structure > is cleared > > 3. security attributes are not present and the unlabeled flag is set to deny > - > query function returns failure > > We can go into all the pros/cons of such an approach vs a granular policy > approach if you would like but when I lost the argument to use > SECINITSID_NETMSG as the default NetLabel packet type we lost the ability to > distinguish between NetLabel'd and non-NetLabel'd packets in SELinux policy > (NetLabel uses SECINITSID_UNLABELED/unlabeled_t for incoming traffic).
I guess my real question is how do we say "reject all unlabeled packets" on a NetLabel system if the boolean in question is not enforcing such policy with respect to netlabel. Or am I as usual just lost? -- redhat-lspp mailing list [email protected] https://www.redhat.com/mailman/listinfo/redhat-lspp
