Are the following open ports a danger?

[Graeme Nichols]

Manuel Arostegui Ramirez wrote:

>  --- Chris Hewitt <rhil at manordata.uklinux.net>
> escribió: 
> 
>>On Mon, 2004-08-09 at 04:16, Graeme Nichols wrote:
>>
>>>Hello Folks, I have just become aware of a
>>
>>utility, nmap, to discover
>>
>>>open ports on my system. The output of the run is
>>
>>as follows:-
>>
>>>[graeme at barney graeme]$ sudo nmap -sS -O barney
>>> 
>>>Starting nmap 3.50 ( http://www.insecure.org/nmap/
>>
>>) at 2004-08-09 13:07
>>
>>>EST
>>>Interesting ports on barney.localdomain
>>
>>(192.168.1.1):
>>
>>>(The 1637 ports scanned but not shown below are in
>>
>>state: closed)
>>
>>>PORT      STATE SERVICE
>>>1/tcp     open  tcpmux
>>>11/tcp    open  systat
>>>15/tcp    open  netstat
>>>22/tcp    open  ssh
>>>111/tcp   open  rpcbind
>>>143/tcp   open  imap
>>>540/tcp   open  uucp
>>>635/tcp   open  unknown
>>>1024/tcp  open  kdm
>>>1080/tcp  open  socks
>>>1524/tcp  open  ingreslock
>>>2000/tcp  open  callbook
>>>6667/tcp  open  irc
>>>10000/tcp open  snet-sensor-mgmt
>>>12345/tcp open  NetBus
>>>12346/tcp open  NetBus
>>>31337/tcp open  Elite
>>>32771/tcp open  sometimes-rpc5
>>>32772/tcp open  sometimes-rpc7
>>>32773/tcp open  sometimes-rpc9
>>>32774/tcp open  sometimes-rpc11
>>>54320/tcp open  bo2k
>>>Device type: general purpose
>>>Running: Linux 2.4.X|2.5.X
>>>OS details: Linux 2.5.25 - 2.5.70 or Gentoo 1.2
>>
>>Linux 2.4.19 rc1-rc7)
>>
>>>Uptime 0.056 days (since Mon Aug  9 11:47:15 2004)
>>> 
>>>Nmap run completed -- 1 IP address (1 host up)
>>
>>scanned in 6.560 seconds
>>
>>>Are any of the above open ports posing a danger
>>
>>that I should close?
>>
>>>My apologies for a dumb question but iptables is
>>
>>not my forte I'm
>>
>>>afraid. BTW, nmap got my system wrong, its FC2 on
>>
>>kernel 2.6.6
>>
>>Graeme,
>>
> 
> 
> 12345/tcp open  NetBus
> 12346/tcp open  NetBus
> 
> Have you got a firewall running? 

Hi Manuel, thanks. Yes, I have iptables running and thought I had all 
blocked from outside except ssh, mail and web browsing. I used the 
graphical utility that comes with FC2. Doesn't look like it does a very 
competent job :-)

-- 

Kind regards,
Graeme Nichols.