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Computer Security - Traffic Log-Legitimate Traffic or Data Mining??? |
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#1 |
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My question comes about because my Netgear router had to be exchanged for a
new unit. I was using Sygate Personal Firewall (Free) at the time, and was receiving daily reports of others trying to scan my ports. So I downloaded Sygate Personal Firewall Pro to enhance protection while I was without a hardware firewall. I quickly became interested in the Traffic Log, after learning of the different logs (security, packet, system and traffic) that the application offered. And I began paying careful attention to it, clearing it often before conducting any web activities so I could see what was happening. I now know that everytime I try to download a page from a Yahoo website with a particular IP address (i.e. 216.109.126.22 for My Yahoo), in less than a thousand milliseconds my computer tries to send TCP data packets to us.a1.yimg.com (206.18.104.200), us.i1.yimg.com (12.129.72.136), and us.news1.yimg.com (12.129.72.144). I've blocked these from going out, and nearly all other traffic as well, establishing very narrow ranges of safe IP addresses my software firewall will permit communication with. And that's the tip of the iceberg. If I try to download the comic from www.dilbert.com (65.114.4.69), my computer tries to send data packets to adsremote.scripps.com (204.78.38.15). The list goes on and on and on; these are just a few examples. Now that I'm blocking these 'extraneous' data packets from being sent, the web pages I want to see take 30 seconds to 5 minutes to download, instead of the usual couple seconds. But they do download eventually. Which tells me that the data packets being sent out without my permission to other IP addresses aren't neccessary for me to see the web pages I want. Call it paranoia, but I can only suspect that the data packets I'm blocking contain personal data such as my browsing habits going to marketing firms and the like. I completely erased all of the cookies I had, but this had no effect at all. Which isn't surprising, since the same kind of behavior (unwanted data packets going to odd IP addresses) occurs even when I visit a new website for the first time. So as I said, I've configured Sygate Personal Firewall with a very narrow set of IP addresses that information can be sent or received from. I build up the set of "good IP's" each time I try connecting to a website by looking at the traffic log, seeing the IP that was blocked when I tried to connect to a desired website, and then including that IP into the allowed range of good IPs. And I'm steering clear of sites that want data packets sent to various alternative IPs when I try to download a webpage, looking for alternative sites for reading news and other activities. So the key question I have is this: is there a legitimate reason why my computer should be sending a data packet to adsremote.scripps.com (204.78.38.15) when I try to read the daily Dilbert comic (65.114.4.69)? Other than the initial request from my browser to download the .html file(s) from a website, why should my browser be sending anything to anywhere else? I'm not a programmer or networking specialist, but I would sincerely like to know what's in those datapackets I'm blocking from leaving my computer. For the moment I'm just building my rules of which IPs are "safe" for my computer to communicate with, so I can visit an increasing number of websites. But I see no reason why I should be supplying any group or business with any data from my computer when its obviously not neccessary for the webpage I want to download to my computer. It may be extremely inconvenient waiting five minutes for a webpage to download, but if somebody wants information from me they should tell me, and possibly be paying me for it. I realize that they are providing me a service when I download a webpage from them. But as I said, I am steering away from those websites to alternatives that aren't mining my computer for information. Are my assumptions in this totally wrong? Or am I right in assuming there is no legitimate reason why I should be sending data packets anywhere other than the IP address from which I requested the web page. Jeff |
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#2 |
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Web sites do use browser redirects where you are viewing the context of a Web page while the browser is being redirected to another Website for uploading or downloading of information to or from your machine. That's everyday life of surfing the Internet. Am I going to worry about trying to stop everything leaving my machines, the answer is no. I use the HOST as a prevention measure that helps stop the browser redirects as much as possible and go on about my business and use Ad-aware on a routine basis. http://www.mvps.org/winhelp2002/hosts.htm http://www.snapfiles.com/get/hoststoggle.html I also do some security configuration of the browser as well. Duane Duane Arnold |
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#3 |
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"Jeff" <> wrote in
news:QwtRc.250317$JR4.100228@attbi_s54: > So the key question I have is this: is there a legitimate reason why > my computer should be sending a data packet to adsremote.scripps.com > (204.78.38.15) when I try to read the daily Dilbert comic > (65.114.4.69)? Other than the initial request from my browser to > download the .html file(s) from a website, why should my browser be > sending anything to anywhere else? > Most freely accessible websites run some form of advertisement/banner service. I guess you will have to live with it. This ad service may is either run by themselves, or by specialised 3d party companies. ( you'd be amazed where CNN,FoxNews,CBS & al take you to stuff you with ads!) This is part of the sourcecode of www.dilbert.com: <script language="JavaScript1.1" src="http://adsremote.scripps.com/js.ng/site=DLBT&adtype=SUPERSTITIAL&Pag ePos=1"> </script> A simple dig reveals that www.dilbert.com is actually located at umns1.unitedmedia.com, and that the DNS-servers are ... ns1/2.scripps.com, belonging to the same domain as adsremote. C:\dig>dig www.dilbert.com ;; QUESTION SECTION: ;www.dilbert.com. IN A ;; ANSWER SECTION: www.dilbert.com. 3263 IN A 65.114.4.69 ;; AUTHORITY SECTION: dilbert.com. 3263 IN NS umns1.unitedmedia.com. dilbert.com. 3263 IN NS ns1.scripps.com. dilbert.com. 3263 IN NS ns2.scripps.com. ;; ADDITIONAL SECTION: umns1.unitedmedia.com. 45917 IN A 65.114.4.10 ns1.scripps.com. 45917 IN A 204.78.32.10 ns2.scripps.com. 45917 IN A 209.215.174.32 Frankly, what you are trying to achieve is a waist of time. It is perfectly normal/legal that a web page contains links to other domains, after all that's what the World Wide Web is all about! It is unfeasable to sift through each and every URL any given webpage may contain. If you're concerned about your privacy, then use some anonymizer service. Finally, if you're really concerned about security, then ditch IE & OE *now*. Even if you installed the latest patches, it will only be a matter of time before the next security hole will surface. -- Dirk. No trees were killed in the creation of this message; however, many electrons were terribly inconvenienced. http://users.pandora.be/dirk.claessens2 Dirk Claessens |
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#4 |
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I already use Avant browser. I disable Active X and Flash animations, but I
still typically allow scripts to run and applets. Ad Blocker and Popup Stopper are also running. But if the packets being sent from my computer are the result of browser redirects, why doesn't my traffic log show an incoming packet from either the original IP I wanted, or from the IP of the redirect? Maybe I don't understand the exact nature of the traffic log. When I tried to work with the Packet Log, it usually hung up and I would have to use the Task Manager to terminate it. The packet log just accumulated too much data too quickly, and the Sygate app wasn't very good at resorting the log so that you could investigate it by reorganizing the list by remote host or some other parameter you wanted to sort by. I reset the Packet Log size liit to a much smaller value of perhaps 512 kB, but haven't tried opening it since. Maybe I should watch it at the same time as the Traffic Log. How would an Anonymizer protect the information they are capturing? I can always go through an anonymous proxy - I have a list and a utility for switching between my direct connection and any of the anonymous public proxies I pick up IPs for. But that doesn't change the fact that the packets are coming from my computer, even if they don't have my IP. There may still be personal information in the data packet, even though its not coming from my IP anymore. I'd feel better if I could intercept this information and see what was contained there. But that is beyond my realm of knowledge at this time. And I don't understand exactly how a HOSTS file will protect me from this. I can sift through my HOSTS file, but I doubt it contains any of the URLs I'm trying to avoid sending packets to. The Avant browser already has a rather comprehensive Ad and popup blacklist, which is updated with each revision of the browser. The last build just came out about two weeks ago. So as I say, without knowing whats in those packets trying to be sent from my computer, I'm going to keep blocking them from leaving. My question remains the same - is this legitimate traffic going from my computer, or are they data mining my computer without telling me? The traffic log gives the domain names as well as the IPs of the remote hosts, and some of them have been pretty wacky. Thanks for your time. "Dirk Claessens" <will.bounce@invalid> wrote in message news:Xns953FD80977885FlyingCircus@195.130.132.70.. . > "Jeff" <> wrote in > news:QwtRc.250317$JR4.100228@attbi_s54: > > > So the key question I have is this: is there a legitimate reason why > > my computer should be sending a data packet to adsremote.scripps.com > > (204.78.38.15) when I try to read the daily Dilbert comic > > (65.114.4.69)? Other than the initial request from my browser to > > download the .html file(s) from a website, why should my browser be > > sending anything to anywhere else? > > > > Most freely accessible websites run some form of advertisement/banner > service. I guess you will have to live with it. This ad service may is > either run by themselves, or by specialised 3d party companies. > > ( you'd be amazed where CNN,FoxNews,CBS & al take you to stuff you with > ads!) > > This is part of the sourcecode of www.dilbert.com: > > > <script language="JavaScript1.1" > src="http://adsremote.scripps.com/js.ng/site=DLBT&adtype=SUPERSTITIAL&Pag > ePos=1"> > </script> > > > A simple dig reveals that www.dilbert.com is actually located at > umns1.unitedmedia.com, and that the DNS-servers are ... > ns1/2.scripps.com, belonging to the same domain as adsremote. > > > C:\dig>dig www.dilbert.com > ;; QUESTION SECTION: > ;www.dilbert.com. IN A > > ;; ANSWER SECTION: > www.dilbert.com. 3263 IN A 65.114.4.69 > > ;; AUTHORITY SECTION: > dilbert.com. 3263 IN NS umns1.unitedmedia.com. > dilbert.com. 3263 IN NS ns1.scripps.com. > dilbert.com. 3263 IN NS ns2.scripps.com. > > ;; ADDITIONAL SECTION: > umns1.unitedmedia.com. 45917 IN A 65.114.4.10 > ns1.scripps.com. 45917 IN A 204.78.32.10 > ns2.scripps.com. 45917 IN A 209.215.174.32 > > > Frankly, what you are trying to achieve is a waist of time. > It is perfectly normal/legal that a web page contains links to other > domains, after all that's what the World Wide Web is all about! > > It is unfeasable to sift through each and every URL any given webpage may > contain. If you're concerned about your privacy, then use some anonymizer > service. > > Finally, if you're really concerned about security, then ditch IE & OE > *now*. Even if you installed the latest patches, it will only be a matter > of time before the next security hole will surface. > > > -- > Dirk. > No trees were killed in the creation of this message; > however, many electrons were terribly inconvenienced. > http://users.pandora.be/dirk.claessens2 Jeff |
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#5 |
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You're sitting there with a Netgear router that has logging and you're
using Sygate? May I suggest that you use Kwiw SysLog Daemon and dump the daily logs into a database like MS Access through ODBC and you can run Access reports and get a better picture as to what the router is seeing for inbound and outbound traffic to/from the router. There are Websites that have Host file updates and you yourself can add a Domain Name to the Host file using 127.0.0.1 the Loopback IP. Not only does the Host file with an Domain Name pointing to the Loopback IP stop the browser from being redirected, but it will also stop malware that doesn't need the browser (running as a background process) from making contact with a site when the malware using a URL in program code tries to do a DNS lookup to resolve the IP. If the Host file is in play, then the O/S goes to the Host file to resolve it which has the Loopback IP instead of going to the ISP to resolve the URL to IP and making contact with the site. Duane Duane Arnold |
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#6 |
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Posts: n/a
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In article <QwtRc.250317$JR4.100228@attbi_s54>, says...
> My question comes about because my Netgear router had to be exchanged for a > new unit. I was using Sygate Personal Firewall (Free) at the time, and was > receiving daily reports of others trying to scan my ports. So I downloaded > Sygate Personal Firewall Pro to enhance protection while I was without a > hardware firewall. > > I quickly became interested in the Traffic Log, after learning of the > different logs (security, packet, system and traffic) that the application > offered. And I began paying careful attention to it, clearing it often > before conducting any web activities so I could see what was happening. > > I now know that everytime I try to download a page from a Yahoo website with > a particular IP address (i.e. 216.109.126.22 for My Yahoo), in less than a > thousand milliseconds my computer tries to send TCP data packets to > us.a1.yimg.com (206.18.104.200), us.i1.yimg.com (12.129.72.136), and > us.news1.yimg.com (12.129.72.144). I've blocked these from going out, and > nearly all other traffic as well, establishing very narrow ranges of safe IP > addresses my software firewall will permit communication with. And that's > the tip of the iceberg. If I try to download the comic from www.dilbert.com > (65.114.4.69), my computer tries to send data packets to > adsremote.scripps.com (204.78.38.15). The list goes on and on and on; these > are just a few examples. > > Now that I'm blocking these 'extraneous' data packets from being sent, the > web pages I want to see take 30 seconds to 5 minutes to download, instead of > the usual couple seconds. But they do download eventually. Which tells me > that the data packets being sent out without my permission to other IP > addresses aren't neccessary for me to see the web pages I want. Call it > paranoia, but I can only suspect that the data packets I'm blocking contain > personal data such as my browsing habits going to marketing firms and the > like. I completely erased all of the cookies I had, but this had no effect > at all. Which isn't surprising, since the same kind of behavior (unwanted > data packets going to odd IP addresses) occurs even when I visit a new > website for the first time. > > So as I said, I've configured Sygate Personal Firewall with a very narrow > set of IP addresses that information can be sent or received from. I build > up the set of "good IP's" each time I try connecting to a website by looking > at the traffic log, seeing the IP that was blocked when I tried to connect > to a desired website, and then including that IP into the allowed range of > good IPs. And I'm steering clear of sites that want data packets sent to > various alternative IPs when I try to download a webpage, looking for > alternative sites for reading news and other activities. > > So the key question I have is this: is there a legitimate reason why my > computer should be sending a data packet to adsremote.scripps.com > (204.78.38.15) when I try to read the daily Dilbert comic (65.114.4.69)? > Other than the initial request from my browser to download the .html file(s) > from a website, why should my browser be sending anything to anywhere else? > I'm not a programmer or networking specialist, but I would sincerely like to > know what's in those datapackets I'm blocking from leaving my computer. For > the moment I'm just building my rules of which IPs are "safe" for my > computer to communicate with, so I can visit an increasing number of > websites. But I see no reason why I should be supplying any group or > business with any data from my computer when its obviously not neccessary > for the webpage I want to download to my computer. It may be extremely > inconvenient waiting five minutes for a webpage to download, but if somebody > wants information from me they should tell me, and possibly be paying me for > it. I realize that they are providing me a service when I download a webpage > from them. But as I said, I am steering away from those websites to > alternatives that aren't mining my computer for information. > > Are my assumptions in this totally wrong? Or am I right in assuming there is > no legitimate reason why I should be sending data packets anywhere other > than the IP address from which I requested the web page. > > > I don't think you need to worry about these redirects (if thats what they are). Many web pages that has advertising us this as a source for the ads. Also, much of the free software that has advertising use this. When using free Opera browser for example, you will find: cdn1.adsdk.com opera1-servedby.advertising.com ins1.opera.com ins2.opera.com tribalfusion.com a.tribalfusion.com pagead-us.googlesyndication.com Sygate logging is excellent. Without it, you really don't know whats going on with the in/out of your computer. I look at the traffic log daily. Casey |
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#7 |
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Duane Arnold wrote: > Not only does the Host file with an Domain Name pointing to the Loopback > IP stop the browser from being redirected, but it will also stop malware > that doesn't need the browser (running as a background process) from > making contact with a site when the malware using a URL in program code > tries to do a DNS lookup to resolve the IP. Pseudo-security by obscurity. Malware authors cannot be relied upon to use the DNS instead of hard-coded IP addresses. Thor -- http://www.anta.net/ Thor Kottelin |
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#8 |
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> And I don't understand exactly how a HOSTS file will protect me from this. > I can sift through my HOSTS file, but I doubt it contains any of the URLs > I'm trying to avoid sending packets to. Take a look at: http://www.accs-net.com/hosts/what_is_hosts.html http://www.mvps.org/winhelp2002/hosts.htm Casey Casey |
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#9 |
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Thor Kottelin <> wrote in news::
> > > Duane Arnold wrote: > >> Not only does the Host file with an Domain Name pointing to the >> Loopback IP stop the browser from being redirected, but it will also >> stop malware that doesn't need the browser (running as a background >> process) from making contact with a site when the malware using a URL >> in program code tries to do a DNS lookup to resolve the IP. > > Pseudo-security by obscurity. Malware authors cannot be relied upon to > use the DNS instead of hard-coded IP addresses. The more hard core programmer of course not, but I am a lazy programmer that will take the easy way out by just coding in the URL in code as do many I would suspect. I have done a little malware testing using IPsec and using its DNS rule feature to block access by the browser to a site along with it stopping the back ground process as well. I will say that I am not an authority in writing malware programs either. The Host is not a stop all ends all solution but it does help in a limited capacity from a home user stand point, IMHO. Duane Duane Arnold |
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#10 |
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I d/l all the Kiwi software, daemon, logger, MIB, viewer. I followed the
setup instructions on the Kiwi site for other Netgear routers since my own wasn't listed. Then I found out that my Netgear router MR814 v2 won't generate security logs. The only log files it generates are attempts to visit blocked sites. "Duane Arnold" <> wrote in message news:Xns953FA21E6CBD6notmenotmecom@204.127.204.17. .. > You're sitting there with a Netgear router that has logging and you're > using Sygate? > > May I suggest that you use Kwiw SysLog Daemon and dump the daily logs > into a database like MS Access through ODBC and you can run Access > reports and get a better picture as to what the router is seeing for > inbound and outbound traffic to/from the router. > > There are Websites that have Host file updates and you yourself can add a > Domain Name to the Host file using 127.0.0.1 the Loopback IP. > > Not only does the Host file with an Domain Name pointing to the Loopback > IP stop the browser from being redirected, but it will also stop malware > that doesn't need the browser (running as a background process) from > making contact with a site when the malware using a URL in program code > tries to do a DNS lookup to resolve the IP. If the Host file is in play, > then the O/S goes to the Host file to resolve it which has the Loopback > IP instead of going to the ISP to resolve the URL to IP and making > contact with the site. > > Duane > > Jeff |
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