Hi Dan, Dan and the list, On Monday 08 September 2008 22:03:29 Dan Mahoney, System Admin wrote: > On Mon, 8 Sep 2008, Dan Nelson wrote: > > In the last episode (Sep 08), Dan Mahoney, System Admin said: > >> I have the following rule set up in ipfw to limit the exposure of bad > >> php scripts and trojans that try to send mail directly. > >> > >> allow tcp from any to any dst-port 25 uid root > >> deny log tcp from any to any dst-port 25 out > >> > >> However, the log messages I get look like this: > >> > >> Sep 8 13:21:11 <security.info> prime kernel: ipfw: 610 Deny TCP > >> 72.9.101.130:58117 209.85.133.114:25 out via em0 Sep 8 13:21:16 > >> <security.info> prime kernel: ipfw: 610 Deny TCP 72.9.101.130:56672 > >> 202.12.31.144:25 out via em0 > >> > >> Which is to say, they don't include the UID -- and I have several > >> hundred sites, each with its own UID. > >> > >> Yes, I could go ahead and set up a thousand "deny" rules, one for > >> each UID -- but being able to log this info (since it IS being > >> checked) would be great. > > > > It should be possible to add a couple more arguments to ipfw_log() so > > that ipfw_chk() can pass it the ugid_lookup flag and a pointer to the > > fw_ugid_cache struct. Then you can edit ipfw_log to print the contents > > of that struct if ugid_lookup==1. That would result in the logging of > > uid for any failed packet that had to go through a uid check on the way > > to the deny rule. > > Okay, so if it's fairly easy to do, the question would be "since I don't > feel right hacking in this change myself -- how could I propose this as a > feature?" It's not a BUG per-se, but I think it could be useful to others > as well.
I own a webhosting company and here too every domain gets it's own user, so I like this proposal. I've hacked together a first try, which seems to be working. A patch (against -HEAD) can be found here : http://vehosting.nl/pub_diffs/ip_fw2.c_uid_2008_09_09.diff Improvements / tips / comments are welcome ;-) -- Daan Vreeken VEHosting http://VEHosting.nl tel: +31-(0)40-7113050 / +31-(0)6-46210825 KvK nr: 17174380 _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
