Do I need these ports open?

Simon Slater pyevet at aapt.net.au
Fri Apr 20 01:18:38 UTC 2007


On Thu, 2007-04-19 at 10:47 -0700, Rick Stevens wrote:
> On Thu, 2007-04-19 at 07:36 +0200, Manuel Arostegui Ramirez wrote:
> > El Miércoles, 18 de Abril de 2007 06:22, Simon Slater escribió:
> > > 	Hi all,
> > >
> > > 	Just a quick question arising from following another thread.  Here is
> > > the result of nmap on a FC6 box:
> > >
> > > $ nmap localhost
> > >
> > > Starting Nmap 4.11 ( http://www.insecure.org/nmap/ ) at 2007-04-18 14:10
> > > EST
> > > Interesting ports on localhost.localdomain (127.0.0.1):
> > > Not shown: 1670 closed ports
> > > PORT     STATE SERVICE
> > > 22/tcp   open  ssh
> > > 25/tcp   open  smtp
> > > 111/tcp  open  rpcbind
> > > 139/tcp  open  netbios-ssn
> > > 445/tcp  open  microsoft-ds
> > > 631/tcp  open  ipp
> > > 670/tcp  open  unknown
> > > 696/tcp  open  unknown
> > > 946/tcp  open  unknown
> > > 2049/tcp open  nfs
> > >
> > > Nmap finished: 1 IP address (1 host up) scanned in 2.036 seconds
> > > $
> > >
> > > 	What are the 3 "unknown" open ports?  Also I cannot find rpcbind,
> > > netbios-ssn nor microsoft-ds under System>Services.  What are these
> > > services for?
> > >
> > > Thanks
> > > Simon
> > 
> > vacdsm-sws      670/tcp                         # VACDSM-SWS
> > vacdsm-sws      670/udp                         # VACDSM-SWS
> > rushd           696/tcp                         # RUSHD
> > rushd           696/udp                         # RUSHD
> > 
> > There's no information about 946 in the /etc/services, though
> Try "netstat -lpn | grep :946" to see what's listening on that port.
> Remember, lots of programs will open ports and listen, and they're
> not necessarily the ones listed in /etc/services.

rpc.statd has port 946 open.

Simon




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