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Re: RH Taroon Beta Open Ports



Felipe Alfaro Solana wrote:

On Mon, 2003-08-25 at 13:50, rhldevel assursys co uk wrote:


Hi -

I've just done a "complete" install of Taroon on a scratch box, with
iptables firewalling disabled. The following services are listening on
external network interfaces:

Port       State       Service
22/tcp     open        ssh
68/udp     open        dhcpclient
111/tcp    open        sunrpc
111/udp    open        sunrpc
123/udp    open        ntp
1010/udp   open        unknown
6000/tcp   open        X11

ssh (we don't want to lock users out after an upgrade), ntp and dhcpclient
(both manually configured during install) are reasonably justified, IMHO,
but what is the justification for having rpc.statd, portmap and X11
listening by *default* (especially on a machine that hasn't been configured
to use NIS)?



rpc.statd and portmap aren't the exclusive domain of NIS. Both are enabled by default and used by NFS as client or server. I think they could be disabled by default instead of being enabled by default.

You can disable both services:

# chkconfig --level 12345 portmap off
# chkconfig --level 12345 nfslock off

If you don't want the NFS server:

# chkconfig --level 12345 nfs off


statd (i.e. nfslock) probably does not need to be running if NFS is not configured but
tunning off portmapper is a bit extreme... Not only do local process expect portmapper
to be there, remote process also expect portmapper to be there ... The
point being turning off portmapper could (and probably will) cause unexpect process
to fail in unexpect ways making very difficult to debug especially during installation...


Portmapper has been around quite a long time making it pretty bullet proof...
So I see no reason what so ever to turn off portmapper. Lets not make a
system more difficult to deal with for simply no reason...


SteveD.





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