tcpwrappers

George Toft plug-discuss@lists.plug.phoenix.az.us
Tue, 15 Oct 2002 00:18:04 -0400


Crow chomp chomp

I do not understand  . . .

I have tested your theory and your are right (as of 2002).  I know for a
fact that in 2000, what I described worked as described.  I have seen it
in action - I tossed IP's into /etc/hosts.deny because they were abusing
our machines an as soon as I did so, the abuse stopped.  We did not have
Apache under inetd control. 

I stand corrected.

George


Digital Wokan wrote:
> 
> Apache is only under the control of /etc/hosts.allow|deny when you set it up
> to start as an inetd service instead of in standalone mode.  For a low use or
> testing site, this may be okay, but it is a large bottleneck to high-usage
> sites, where a firewall-based blocking solution would make more sense to use
> against abusers.
> 
> On Thursday 10 October 2002 20:40, George Toft wrote:
> > What makes you think Apache is not?  Whe I was at the .com in LA, we had
> > a script that analyzed Apache log files, and dropped the abuser's IP
> > netowrk into /etc/host.deny for 48 hours.  That locked him (and a chunk
> > of his ISP) out so he couldn't redial and continue the attack.
> >
> > I know for a fact that SNMP is under tpc wrapper control - that was one
> > of the biggest bitches to solve.
> >
> > SSH is also controlled by TCP wrappers - I use it as redundancy in case
> > I make stupid typos and open SSH to my $EXTIF instead of my $INTIF.  I
> > did this, and I discovered it through looking at my logs.
> >
> > What I discovered two weeks ago about OpenLDAP was that LOCAL is not the
> > same as 127.0.0.1.  To every other service I have used in the last 6
> > years it was, but noooo - not OpenLDAP.
> >
> > Anyway, it's called TCP wrappers, not inet wrappers, because it affects
> > all TCP services.  My hosts.allow file looks like this:
> >       ALL: LOCAL, 127.0.0.1, 192.168.55.
> > which supports my LDAP, MySQL, Apache and DNS servers.  The 192.196.55
> > LAN is another interface that needs DNS and HTTP services.
> >
> > George
> >
> > Mike Starke wrote:
> > > Years ago, I seem to recall that the only services
> > > under control of hosts.allow & hosts.deny were those
> > > under inetd (/etc/inetd.conf).
> > >
> > > I just spent the past hour trying to figure out why I couldn't
> > > connect to my new ldap server from a remote site; come to find
> > > out all I needed was a simple entry in /etc/hosts.allow Being that
> > > slapd runs as a deamon, I stared at my slapd.conf file and couldn't
> > > find any reason why a connection was denied.
> > >
> > > Simple question: How does one know when a service is under
> > > tcpwrappers? Apache & Bind are not, what should have made
> > > me think slapd was?
> > >
> > > v/r
> > > Mike
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