Tool to tell when Internet connection is going down?

Posted on 2005-04-29
Last Modified: 2013-11-16
I have a customer that I installed a WatchGuard X15 behind a Netopia 3546 (bridge mode) on their ADSL connection.  They run an ATT&T Global VPN client at the desktop.  Since I installed the X15, they claim they vpn goes down a couple times a day.  The VPN client says it loses a hearbeat and closes.  I have looked at the X15 logs and found nothing.  Nor anything on the Netopia.  I am wondering if there is a utility that can run on a workstation that would poll something and let me know exactly when the Internet connection goes down.  Or if there is something I am overlooking.  I have installed many Watchguards and never had this problem.

Question by:warwickinc
    LVL 6

    Expert Comment

    Would a log of ping failures be sufficient, or do you need to look for and monitor a specific type of network packet?

    Author Comment

    It might.  I would like to be able to ping the Netopia that way I could tell if it is the WatchGuard because that is the only device in the way.  But since the Netopia is in bridge mode, I would have to ping the ISP's router which adds a bunch of other devices to skew the results.  Any suggestions?

    Author Comment

    Is there a small enhanced ping app out there that I could log the results to a file with a time stamp?
    LVL 6

    Accepted Solution

    Would something like this in a batch file work for your needs?
    ::::: copy below this line :::::
    @echo off
    echo PingLog Running ... Ctrl+C to exit.

    REM Set your target IP address here!!!
    ping -n 2  > nul

    REM This line checks the return status of the ping
    REM   if ping failed, string is appended to pinglog.txt
    if ERRORLEVEL 1 echo ping failure at %DATE% %TIME% >> pinglog.txt

    REM This ping is only used to set a timeout!!!
    REM   the -w option sets the timeout in miliseconds (30000 is 30 seconds).
    ping -n 1 -w 30000 > nul

    REM This is a loop that never ends.
    goto again

    Author Comment

    Might be an option.  Will test this on Mon or Tues. see what happens.  Thanks for the suggestion.
    LVL 12

    Expert Comment

    is an excellent tool

    Featured Post

    How to run any project with ease

    Manage projects of all sizes how you want. Great for personal to-do lists, project milestones, team priorities and launch plans.
    - Combine task lists, docs, spreadsheets, and chat in one
    - View and edit from mobile/offline
    - Cut down on emails

    Join & Write a Comment

    The DROP (Spamhaus Don't Route Or Peer List) is a small list of IP address ranges that have been stolen or hijacked from their rightful owners. The DROP list is not a DNS based list.  It is designed to be downloaded as a file, with primary intention…
    Don’t let your business fall victim to the coming apocalypse – use our Survival Guide for the Fax Apocalypse to identify the risks and signs of zombie fax activities at your business.
    After creating this article (, I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
    Get a first impression of how PRTG looks and learn how it works.   This video is a short introduction to PRTG, as an initial overview or as a quick start for new PRTG users.

    728 members asked questions and received personalized solutions in the past 7 days.

    Join the community of 500,000 technology professionals and ask your questions.

    Join & Ask a Question

    Need Help in Real-Time?

    Connect with top rated Experts

    15 Experts available now in Live!

    Get 1:1 Help Now