Out of my league.....

From: Jeff Johnson (jjohnson_at_redoakgroup.com)
Date: 01/07/04

  • Next message: Camila Lui: "Re: detecting rootkits"
    To: <security-basics@securityfocus.com>
    Date: Wed, 7 Jan 2004 15:16:11 -0600

    Hello. My ignorance will be vivid here....

    I'm currently doing marketing at a small office, but, as I'm technically
    inclined enough to be dangerous, in my spare time do the IS support as well.
    They had an outside consultant set up the system, and he had done other
    setups/management when needed, but, is no longer available. He'd set up the
    network with a Symantec VPN/Firewall appliance as the external gateway, but
    had opened up ports to a server inside the network which is currently
    hosting the email server (Xmail), DNS, as well as a simple web app to do
    web-mail checking for employees from the outside. Also opened ports for
    ssl, termserver, ftp, smtp, and pop3, and another port for remote admin.

    Looked a bit insecure for me when I noticed it, so, I installed ZoneAlarm on
    this server inside the network, which is currently working. Plans are to
    move the web serving onto another server which will be put into a DMZ. After
    noticing these open ports, I also decided to pay more attention to the
    firewall logs, and noticed not just the normal external port scan attack
    blocks, but also that a couple of computers, including the company server,
    are attempting to access outside IPs using closed port calls (therefore, the
    firewall catches and logs them). These blocks come with the message Block
    host "" internet access, and are typically using ports 139 & 445. Looked
    suspicious, so, I ran an fport scan on the server, and it did show ports 139
    & 445 open, but, shows that the Pid is 8 (the system).....Also did some
    ethereal scan of the network, and it does show that the server is trying to
    access this specific external ip address.

    My question is (kudos if you've patiently read everything so far), how do I
    find out what this process is that is trying to do these accesses, or am I
    being overly paranoid. As you can most likely tell from this, I'm not the
    most technically adept IT support person, so, I'd also appreciate
    references/suggestions on materials to help me out here.

    Thanks in advance to all.


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