|
|
|
|
|
|
|
|
 |
 |
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [FW-1] DNS Question
So in short, it doesn't matter what circumstance caused TCP-53 to get used by DNS in the past, now that MS-Win2K is on the planet it had better be opened up. Figures. This is right up there with dynamic DNS traffic being shot out to the Internet by misconfiured Win2K boxes 'automatically registering' themselves with the root servers... Rant rant rant :) -----Original Message----- From: Adam Fathauer [mailto:[email protected]] Sent: Thursday, May 02, 2002 5:42 AM To: [email protected] Subject: Re: [FW-1] DNS Question Windows 2000 servers running SMTP will send out all DNS queries via TCP and not UDP. Refer to the following Microsoft article: http://support.microsoft.com/default.aspx?scid=kb;EN-US;q263237 I have also seen Windows NT 4.0 & 2000 workstations sending DNS queries via TCP and not UDP. Don <[email protected]> Sent by: Mailing list for discussion of Firewall-1 <[email protected]> 05/02/2002 08:07 AM Please respond to Mailing list for discussion of Firewall-1 To: [email protected] cc: Subject: Re: [FW-1] DNS Question > 53-TCP is used for zone transfer should be secured 53-UDP can be open > to all. TIP. This is not correct. Please read my post below. -Don > >>>After all the IPSO upgrades and service pack upgrades for our > >>>Nokia/Checkpoint 4.1 SP5a solution, we started seeing some random > >>>results with our DNS servers. Sometimes, it would fail on the > >>>first lookup - but after that it would be ok... my question is > >>>simple... for > >>>the last several years we've had the simple 2 rules for our DNS Servers: > >>> > >>>1. Any (Source) DNSServers(Destination) DNS-53(Port) > >>>2. DNSServers (Source) Any (Source) DNS-53 (port) > >>> > >>>The question is simple...are we missing something obvious??? Our > >>>DNS servers are Windows 2000. > >>> > >>When you say DNS-53, do you mean UDP or TCP? You need to allow both > >>in order for DNS to function properly. Most DNS requests use UDP > >>port 53, however larger requests use TCP port 53. It may be these > >>larger requests > >>that are failing. > >> > >>-Don ================================================= To set vacation, Out Of Office, or away messages, send an email to [email protected] in the BODY of the email add: set fw-1-mailinglist nomail ================================================= To unsubscribe from this mailing list, please see the instructions at http://www.checkpoint.com/services/mailing.html ================================================= If you have any questions on how to change your subscription options, email [email protected] ================================================= ================================================= To set vacation, Out Of Office, or away messages, send an email to [email protected] in the BODY of the email add: set fw-1-mailinglist nomail ================================================= To unsubscribe from this mailing list, please see the instructions at http://www.checkpoint.com/services/mailing.html ================================================= If you have any questions on how to change your subscription options, email [email protected] ================================================= ================================================= To set vacation, Out Of Office, or away messages, send an email to [email protected] in the BODY of the email add: set fw-1-mailinglist nomail ================================================= To unsubscribe from this mailing list, please see the instructions at http://www.checkpoint.com/services/mailing.html ================================================= If you have any questions on how to change your subscription options, email [email protected] =================================================
|
||||||||||
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
