The basic question you need to answer for us is: how is your system doing 
DNS? Are you running your own DNS server on the router and using it to do 
DNS directly (i.e., starting at the roo servers and working down)? Are you 
running a DNS server that uses your ISP's DNS server(s) as forwarder(s)? 
Are the clients on your LAN using the ISP's DNS servers directly? Something 
else?

As a general matter, if you want to be able to access the Internet using 
FQNs (and not just IP addresses directly, something nobody does), you need 
to allow *some* UDP traffic from port 53 in. Otherwise, off-LAN DNS servers 
will be unable to respond to the queries you send them ... and while I 
don't know from what you sent *how* you do (off-site) DNS queries, you must 
be doing them *somehow*.

It would not surprise me if the "current connections" you list below were 
incomplete DNS queries. If so, the reason "no one on the homenetwork can 
connect to the Internet" may be that you have an undiagnosed DNS problem, 
so URLs (or FQNs for whatever services you mean by "connect") do not 
resolve. The mere existence of open connections should not prevent LAN 
users from accessing the Internet (at least not in in the quantities you 
report ... you are in no danger of running out of ports).

You might want to report with a more descriptive trouble report. The "SR 
FAQ" link below will help you do so, if you care to try this approach. (I 
don't recall your prior postings, but if you really got no responses, it 
may be that they were too vague to elicit anything useful. There are enough 
of us regulars, with a wide range of expertises and tempraments, that it is 
rare that no one responds to a query.)

At 10:34 PM 6/13/02 -0500, Steve Jeppesen wrote:
>I am having trouble with these "established connections" showing up in my 
>viewmasq
>log to the point where no one on the homenetwork can connect to the Internet.
>
>The problem seemed to go away after AT$T assigned new IP's for everyone in the
>neighborhood, but just today it reared its ugly head again.  I have asked 
>for help
>before from the list here, but nobody replied to my posts.
>
>Please tell me at least is it something I am being ignorant about and not
>researching the problem enough myself before posting here?  Or is it that 
>nobody
>here knows what to do about it?
>
>It seems there should be a way to modify network.conf (Dachstein CD V1.02) to
>not allow any external connections from any IP using port 53 - is there 
>something
>in network.conf that would work?  I have looked thru network.conf but do
>not see anything that might help block external connections to eth0
>
>Here is a small portion of my "Current connections" as reported in viewmasq;
>
>Active Internet connections (w/o servers)
>Proto Recv-Q Send-Q Local Address           Foreign 
>Address         State
>tcp        0      0 
>192.168.1.254:80        192.168.1.2:33449       ESTABLISHED
>tcp        0      0 
>192.168.1.254:80        192.168.1.2:33447       TIME_WAIT
>tcp        0      0 
>192.168.1.254:80        192.168.1.2:33446       TIME_WAIT
>tcp        0      0 
>192.168.1.254:80        192.168.1.2:33444       TIME_WAIT
>udp        0      0 
>24.118.176.137:52220    192.203.230.10:53       ESTABLISHED
>udp        0      0 
>24.118.176.137:43084    128.8.10.90:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:21690    128.63.2.53:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:34665    128.8.10.90:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:30698    192.33.4.12:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:31418    198.32.64.12:53         ESTABLISHED
>udp        0      0 
>24.118.176.137:40885    198.41.0.4:53           ESTABLISHED
>udp        0      0 
>24.118.176.137:22397    198.41.0.10:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:48569    192.36.148.17:53        ESTABLISHED
>udp        0      0 
>24.118.176.137:18114    193.0.14.129:53         ESTABLISHED
>udp        0      0 
>24.118.176.137:39686    128.63.2.53:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:53853    128.8.10.90:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:55249    198.41.0.10:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:35631    198.32.64.12:53         ESTABLISHED
>udp        0      0 
>24.118.176.137:24105    202.12.27.33:53         ESTABLISHED
>udp        0      0 
>24.118.176.137:13567    193.0.14.129:53         ESTABLISHED
>udp        0      0 
>24.118.176.137:19059    192.5.5.241:53          ESTABLISHED
>udp        0      0 
>24.118.176.137:13893    193.0.14.129:53         ESTABLISHED
>
>Notice the Foreign Address column...
>How can I block those xxx.xxx.xxx.xxx:53 using Dachstein?
>
>Thanks for any help and/or replies - I am pulling my hair out over this,
>what hair I have left!




--
-----------------------------------------------"Never tell me the 
odds!"--------------
Ray Olszewski                                        -- Han Solo
Palo Alto, California, USA                              [EMAIL PROTECTED]
-------------------------------------------------------------------------------------------


_______________________________________________________________

Don't miss the 2002 Sprint PCS Application Developer's Conference
August 25-28 in Las Vegas - 
http://devcon.sprintpcs.com/adp/index.cfm?source=osdntextlink

------------------------------------------------------------------------
leaf-user mailing list: [EMAIL PROTECTED]
https://lists.sourceforge.net/lists/listinfo/leaf-user
SR FAQ: http://leaf-project.org/pub/doc/docmanager/docid_1891.html

Reply via email to