On 11-May-2001 Tom Beer wrote:
> Marco Calistri wrote:
>
>> It could be a problem of your pppd config. or even,and more probably,
>> a router filter config. where the DNS or NetBios queries are not
>> blocked,so box 2 ask for DNS and router trigger the call to ISP.
>
> I'm not using hardware routers. The only thing, that runs is IP_MASQ.
> Additionally
> all is working correct with m$ clients also attached to the same subnet.
> What, especially,
> is unclear to me is, why does he tries to build up connections without
> any need to?
> COuld it be that named is the suspect?
Try to switch off that m$ client and check again:
Netbios port 137 138 139 and DNS port 53 are the most common
tcp queries going out from m$ clients and this could trigger your ISDN.
>> This has been a problem I had with Zyxel Prestige Router series
>> and you can stop by using Zyxel internal filtering rules.
> I don't use these filtering rules...
Rules are welcomed if a Zyxel router is used for m$ clients.
--Marco
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