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smmahoney's avatar
smmahoney
Aspirant
Feb 24, 2013

SRXN3205 troubleshooting

Windows 7/AT&T/FastAccess Business DSL 3M
We have problems with our internet being slow. Ive isolated the DSL modem and the traffic is within specification. I enabled traffic meter on the netgear router and it is showing that excessive email traffic (> 2GB per day) is being transmitted outbound (even when no one is there). I enabled logging and cannot find that traffic in the log. I attempted to capture packets but I cannot open the cap file to review. If the traffic metering is accurate then it will explain the slow upstream we are getting. How can I determine where this traffic is comming from using the SRXN3205 product?
Thank you

8 Replies

  • Do you shut all computer down and you are seeing massive usage of email traffic?
  • About 7 PC's on a peer-to-peer.
    Machines are generally left on - I'd have to ask if they would turn them off at close of business to test.
    No email server on LAN.
  • Machines are generally left on - I'd have to ask if they would turn them off at close of business to test.


    I would do "mandatory" shut down at the end of the day observe the issues.
  • jmizoguchi wrote:
    I would do "mandatory" shut down at the end of the day observe the issues.


    I will ask for a shutdown.

    In the meantime, can you tell me in your expereince if the traffic meter is accurate? I've let this run for > than full day now and the avg is 6028MB per day outgoing email traffic (incoming is 300).

    I know that is not work product because with that growth rate the file server volumes would be filled already.
  • I think your best bet is to shutdown to see the changes. I hope you do.
    If you don't have email server of your own then something is causing to move traffic.

    I personally don't measure on mine with UTM 25 I use
  • ok - so I did a shutdown and traffic subsided.
    Once they were all back on I saw traffic again.

    I created new firewall rules to allow all LAN->WAN traffic and log entries.
    This let me see all of the traffic.

    From there I was able to decern that there was significant traffic attempts on arbitray ports to many foriegn countries from a specific workstation.
    I believe one of the machines may be part of a bot net.

    I will research futher and scan the suspect machine but I think the mystery is solved.


    thanks for your assistance.

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