wu-ftpd - symlinks

[Technomage]

question?
was the box that lpr was running on protected by firewall?

also, is it a standard linux installation using either ipchains or iptables 
as the firewall?

I might be able to help a lot with ipchains. iptables is still relatively new 
for me and I went with a standard "high security" setup.

Technomage

On Thursday 17 January 2002 10:58, you wrote:
> Armand,
>
> I did figure this out and even tried to post to the list on Sunday about
> it, but of course my post never got there...  Thanks everyone for the help.
>
> I'm thinking I will check out one of the alternate servers that have been
> discussed here.  A friend of mine was rooted recently (through lpr) by a
> particularly nasty script kiddie, so in light of the pain he experienced
> I'm stepping up my security as well.
>
> On Wed, 16 Jan 2002, Armand wrote:
> > % Probably a dumb question.  I would like to symlink a directory under
> > % my
> > % /home/ftp/pub.  I know this is possible - lots of sites do it.  But
> > % wu-ftp
> > % doesn't recognize symlinks created by ln -s.  Is there something
> > % special
> > % I can do to get the link to work in wu-ftpd?
> > %
> > % Thanks,
> > % Lisa
> >
> > Hi Lisa,
> >
> > According to http://www.wu-ftpd.org/wu-ftpd-faq.html#QA74
> >
> > "15.I made a symbolic link within the anonymous tree and it doesn't work
> > for the anonymous users.
> >
> > Symbolic links are relative to your active root. If you want to access
> > files/directories/diskspace outside your chrooted environment, you'll
> > have to import it using directory loopback mounts (available on at
> > least Solaris) or using NFS mounts (available on most other operating
> > systems but they have a performance impact)."
> >
> > So in short, no you can't just make a soft-link with ln -s. Apparently
> > it requires an NFS mount which I'm not familiar with.
> >
> > But according to people on irc.openprojects.net #linpeople you can use
> > hard links to accomplish this (be aware that you can't hard-link across
> > devices i.e. partitions).
> >
> > Maybe this is where security problems arise when you try to link outside
> > of the chrooted environment.
> >
> > I like wu-ftp, it automatically set up ftp to my users' public_html file
> > just by making an ftp-only account.
> >
> > There are other ftp servers that may well be as good as if not better
> > but I learned a lot from digging thru the docs about wu-ftp on my
> > RH box.
> >
> > HTH,
> > Armand
> > ________________________________________________
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