Commplex listening on port 5000?

Discussion in 'macOS' started by 46and2, Aug 27, 2005.

  1. 46and2 macrumors newbie

    Joined:
    Aug 6, 2005
    #1
    When I do a port scan or netstat -a | grep LISTEN, I get something listening on port 5000. Netstat calls it "commplex". Even if I turn on the firewall, it's still listening. It only listens on my IP address, not on 127.0.0.1. I am not running any servers that I know of, and no chat/IM clients. I can add the output of "ps aux" if needed. Can anyone tell me what it is and how to stop it?
     
  2. superbovine macrumors 68030

    superbovine

    Joined:
    Nov 7, 2003
    #2
    hmm

    i have had the same question.

    check out my nmaps without the firewall on.

    Code:
    superbovine:cow /etc $ nmap 192.168.1.101
    
    Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2005-08-27 17:06 CDT
    Interesting ports on 192.168.1.101:
    (The 1660 ports scanned but not shown below are in state: closed)
    PORT     STATE SERVICE
    427/tcp  open  svrloc
    5000/tcp open  UPnP
    5001/tcp open  commplex-link #this port if for bonjour ichat
    
    Nmap finished: 1 IP address (1 host up) scanned in 12.681 seconds
    superbovine:cow /etc $ nmap localhost
    
    Starting nmap 3.81 ( http://www.insecure.org/nmap/ ) at 2005-08-27 17:07 CDT
    Interesting ports on localhost (127.0.0.1):
    (The 1660 ports scanned but not shown below are in state: closed)
    PORT     STATE SERVICE
    427/tcp  open  svrloc
    631/tcp  open  ipp
    1033/tcp open  netinfo
    
    Nmap finished: 1 IP address (1 host up) scanned in 14.109 seconds
    superbovine:cow /etc $ 
    
     
  3. rich*e macrumors newbie

    Joined:
    Dec 3, 2005
    #3
    It's part of Bonjour

    I have no clue what Bonjour is as I'm a little too lazy to really do some research, but it has something to do with making networking easier.

    Here's what I did, use the netstat command:
    $ netstat -an | grep -i listen
    tcp4 0 0 192.168.1.100.5000 *.* LISTEN
    tcp4 0 0 127.0.0.1.1033 *.* LISTEN

    $ sudo lsof -i @192.168.1.100:5000
    Password:
    COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
    mDNSRespo 40 root 13u IPv4 0x02be4c70 0t0 TCP 192.168.1.100:commplex-main (LISTEN)

    man the lsof page if you have any questions on its use. Newsforge has a pretty decent beginners article on it too, too lazy to post the link tho.

    rich*e
     
  4. superbovine macrumors 68030

    superbovine

    Joined:
    Nov 7, 2003
    #4
    from your post sounds a bit like upnp which is on port 5000
     
  5. belvdr macrumors 601

    Joined:
    Aug 15, 2005
    #5
    It's part of the multicast DNS responder, which is is how Bonjour/Rendezvous works.
     

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