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Its a Secret
Whatever
Premium
join:2008-02-23
U B Funny | Re: With DNS Flaw Now Public, Attack Code Imminent Nice. The idiot from Matasano should be shown the door. And this from a security company?
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"In the future, that which is not madatory will be illegal" | |
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JohnInSJ
Premium
join:2003-09-22
San Jose, CA | OpenDNS, and just about every other DNS has been patched already. This was more a media event then anything else.
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My place : »www.schettino.us | |
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Its a Secret
Whatever
Premium
join:2008-02-23
U B Funny | Re: With DNS Flaw Now Public, Attack Code Imminent Perhaps they all were playing catchup, but good to see the fix is in place!
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"In the future, that which is not mandatory will be illegal" | |
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jbob
Reach Out and Touch Someone
Premium
join:2004-04-26
Little Rock, AR | Re: Good test to check your ISPs DNS servers FYI The OARC test may not be as accurate on Comcast. See this thread:
»[DNS] Comcast and the DNS Server flaw issue
Even Dan Kaminsky has chimed in. | |
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TKJunkMail
Enjoy the sun
Premium
join:2002-03-03
Avalon, NJ
 ·Sprint Mobile Broa..
 ·Comcast
| Re: Good test to check your ISPs DNS servers Thanks for update. I did try the doxpara test too. But the doxpara test only tests the 1st DNS server it finds in the DNS list for the computer. The entropy test tests all the entries in the computers DNS list. So that made it easier to use.
In any case, the opendns servers test as well as or better than Comcasts and I'll stick with them.
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My BLOG .. .. Internet News .. .. My Web Page
Ask yourself one question: 'Do I feel lucky?' Well, do ya punk? | |
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| | | TheWiseGuy
Dog And Butterfly
Premium,MVM
join:2002-07-04
Yonkers, NY
| It seems both tests can give different results at times, especially if the servers source ports are not completely random. Have gotten results from Poor to Great with the new test. In looking at the ports used, it looks as if they tend to be in one range and then change to another range for my ISP.
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Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore. | |
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pepperxn
join:2001-02-21 | To be safe from this flaw: does one need to patch the local systems in addition to using a DNS server that's safe from this flaw. | |
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Steve
I'm a PC, so shut up
Consultant
join:2001-03-10
Yorba Linda, CA | You guys are all idiots - I've been invulnerable to this for a long time.
I just use a really really really really big hosts file  | |
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SUMware
Premium
join:2002-05-21
3 edits | DNS Resolver(s) Tested:
208.69.32.14 (bld4.ash.opendns.com) appears to have GREAT source port randomness and GREAT transaction ID randomness.
The essence of the problem is that DNS resolvers don't always use enough randomness in their transaction IDs and query source ports. Increasing the amount of randomness increases the difficulty of a successful poisoning attack.
This page exists to help you learn if your ISP's nameservers are vulnerable to this type of attack. If you click on the button below, we will test the randomness of your ISP DNS resolver.
For test visit: »https://www.dns-oarc.net/oarc/services/dnsentropy
The test takes a few seconds to complete. When its done you'll see a page where the transaction ID and source port randomness will be rated either GREAT, GOOD, or POOR. If you see a POOR rating, we recommend that contact your ISP and ask if they have plans to upgrade their nameserver software before August 7th. | |
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| TheWiseGuy
Dog And Butterfly
Premium,MVM
join:2002-07-04
Yonkers, NY
| Re: With DNS Flaw Now Public, Attack Code Imminent Thanks for the link.
OOL seems to have just patched, the link indicated they had done it right, versus dox which indicated possible NAT. Looks as if they use a larger sample.
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Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore. | |
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caffeinator
Coming soon to a cup near you..
Premium
join:2005-01-16
Spokane, WA
 ·WebBand
| Re: DNS Randomness Tests Nice one..the other test never did work on my machine.
However, using my primary DNS server from the ISP I get:
Source Port Randomness: POOR (one port used but it's a high range)
Transaction ID Randomness: GREAT (25 diff. ID's used)
So, is that a problem?
I use openDNS as my secondary as a failsafe FWIW.
-CaFF | |
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| Libra
Premium
join:2003-08-06
USA
| I did this test twice on my 98se computer and got this:
1. 68.237.161.37 appears to have POOR source port randomness and GREAT transaction ID randomness.
2. 68.237.161.38 appears to have POOR source port randomness and GREAT transaction ID randomness.
The first time I did this test the results were the same but the number was 68.237.161.36.
I also did the test on our XP computer which has the MS Patch, and AOL running - AOL came up great for both tests, but my dsl numbers (similar to above) had the same poor source port and great randomness.
I have Verizon DSL with the Westell 2200 modem (that has a NAT Firewall router) and I use a switch to connect both pcs.
When Dan Kaminsky first had his test both computers tested "your dns server appears safe". After he changed the test, both computers show "your NAT is interfering".
I don't understand all of this. How do I fix this (or does Verizon have to fix this)? Also, I don't know how to switch to an open DNS.
Thank you.
Sincerely, Libra | |
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| | TheWiseGuy
Dog And Butterfly
Premium,MVM
join:2002-07-04
Yonkers, NY
| Re: DNS Randomness Tests To switch to opendns follow the instructions in Section 4 of the link below (instructions quoted) for windows 98 and use the following IP addresses for DNS servers, (ignore the Domain instructions and the gateway instructions.)
208.67.222.222
208.67.220.220
»Satellite Forum FAQ »[DW4000] I'm sharing my connection on a LAN. Do I need to do more?
said by faq :
Windows 98:
Start => Settings => Control Panel => click on the Network icon or right-click on the Network Neighborhood icon and choose 'Properties'. Either way gets you into the Network configuration screens.
From the list of installed clients, protocols and services, locate TCP/IP bound to the NIC It will look something like this: TCP/IP -> your network card. The arrow indicates the protocol is bound to that adapter. Highlight that and then click the Properties button. This gets you into the TCP/IP configuration screens. Click the DNS Configuration tab. Put as dot in the 'Enable DNS' radio button.
Then add the DNS servers,
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Warning, If you post nonsense and use misinformation and are here to argue based on those methods, you will be put on ignore. | |
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| | | Libra
Premium
join:2003-08-06
USA
| Re: DNS Randomness Tests Hi WiseGuy,
Thank you for your instructions. However, I ran into a problem: after I inserted the two dns numbers and clicked "okay" I got this message "In order to use DNS you must specify a host name for your computer." I didn't know what to put in, so I canceled it.
I'm also wondering what I have to do for the XP computer.
Thank you.
Sincerely, Libra | |
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| | | | SipSizzurp
Fo' Shizzle
Premium
join:2005-12-28
Hilo, HI
·RoadRunner Cable
1 edit | Re: DNS Randomness Tests said by Libra  :... after I inserted the two dns numbers and clicked "okay" I got this message "In order to use DNS you must specify a host name for your computer." If that is your Win98 machine, then the host name will be fine with anything you enter. For the XP box see the screen shot.
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I spent most of my money on Women and Beer, and the rest I just wasted ! | |
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Sparrow
Crystal Sky
Premium
join:2002-12-03
Sachakhand
| Re: DNS Randomness Tests SipSizzurp ,
It's much easier to use the OpenDNS page. It guides a client through with implicit and easy directions. One can open an account, download the updater and you are on your way.
There is also a forum for support questions. | |
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| | | | | | SipSizzurp
Fo' Shizzle
Premium
join:2005-12-28
Hilo, HI
·RoadRunner Cable
| Re: DNS Randomness Tests said by Sparrow :...open an account, download the updater... 
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I spent most of my money on Women and Beer, and the rest I just wasted ! | |
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| | | | | | SUMware
Premium
join:2002-05-21
| said by Sparrow :One can open an account OpenDNS states that creating an account is purely optional and completely unnecessary to use their service. | |
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| | | | | Libra
Premium
join:2003-08-06
USA | Thank you, SipSizurp, for posting the pictures for me. In another thread I found out I could put those openDNS numbers into my Westell modem, so I did that instead and it covered both computer.
Sincerely, Libra | |
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Imagine Reason
@rr.com |  Re: DNS Randomness Tests
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| | | | | | | | | SUMware
Premium
join:2002-05-21
| Re: DNS Randomness Tests »www.opendns.com/how/free/how-can···be-free/
OpenDNS makes money the same way Google and Yahoo do — by showing relevant ads when we show you search results.
This can be added this to the 'hosts' file: 127.0.0.1 guide.opendns.com | |
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