Solved

Traffic causing network problems

Posted on 2004-04-28
4
263 Views
Last Modified: 2010-04-17
We have twice in the past week seen this traffic that appears to be coming from outside our network at first glance to one of our DSL customers.

9      IP-66.119.33.206      IP-172.16.7.248            64      19:04:26.199174      HTTPS      Src=  443,Dst= 2198
10      IP-66.119.33.206      IP-172.16.7.248            64      19:04:26.214186      HTTPS      Src=  443,Dst= 2198
11      IP-66.119.33.206      IP-172.16.7.248            64      19:04:26.244356      HTTPS      Src=  443,Dst= 2198
12      IP-66.119.33.206      IP-172.16.7.248            64      19:04:26.256164      HTTPS      Src=  443,Dst= 2198
13      IP-66.119.33.206      IP-172.16.7.248            64      19:04:26.268733      HTTPS      Src=  443,Dst= 2198

While this traffic is present other customers on this network can no longer access the Internet nor can they renew or receive an IP address from our dhcp server.

The 66 address resolves to marketscore.com. Anyone seen this before? One item that comes to mind is that I placed a ACL in our edge router to block all traffic from this particular address with no results. That makes me think the traffic may not have been actually coming from outside. It's currently not happening but if it does again I'll be better able to identify if it in in fact coming from outside.

0
Comment
Question by:fallonsupport
4 Comments
 
LVL 3

Accepted Solution

by:
justintx earned 250 total points
ID: 10941943
hmmmm.... marketscore is a proxy that routes all internet traffic through their servers.  block all inbound and outbound to those ips and tell your user to uninstall it.  they also log all that user's web traffic.

justintx
0
 
LVL 28

Expert Comment

by:mikebernhardt
ID: 10944471
Is there any traffic the other direction? It would seem that this traffic is return traffic since it's ssl to a high-numbered port. Or... it's spoofed traffic that's causing your customer a DOS because it doesn't know what to do with these packets?
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

We've been using the Cisco/Linksys RV042 for years as: - an internet Gateway - a site-to-site VPN device - a leased line site-to-site subnet-to-subnet interface (And, here I'm assuming that any RV0xx behaves the same way as an RV042.  So that's …
How to set-up an On Demand, IPSec, Site to SIte, VPN from a Draytek Vigor Router to a Cyberoam UTM Appliance. A concise guide to the settings required on both devices
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), 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…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), 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…

895 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