From: subodh.rawat@wipro.com
Date: Mon Jan 07 2008 - 08:17:49 ARST
Yes.
Only first time TFTP server establishes connection at port 69. After
that it will open random ports.
It is so adament that you will have write your own code to force TFTP to
listen at 69 only.
Cheers
Subodh
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Geert Nijs
Sent: Monday, January 07, 2008 3:25 PM
To: ccielab@groupstudy.com
Subject: TFTP ports different than UDP 69 ?
Hi group,
Does TFTP uses other ports like UDP 69 ?
ie maybe also dynamically assigned data transfer ports like FTP ?
In between a switch and a Ciscoworks/TFTP server i am seeing hits on
random UDP ports, and i suspect this has something to do with the
automatic config download towards the Ciscoworks server:
Dec 20 14:28:07.101 CET: %SEC-6-IPACCESSLOGP: list 100 denied udp
193.74.xxx.4(38052) -> 10.63.xxx.2(49872), 5 packets
Dec 20 14:28:07.101 CET: %SEC-6-IPACCESSLOGP: list 100 denied udp
193.74.xxx.4(37992) -> 10.63.xxx.2(49872), 9 packets
Dec 20 14:28:07.101 CET: %SEC-6-IPACCESSLOGP: list 100 denied udp
193.74.xxx.4(37990) -> 10.63.xxx.2(49516), 9 packets
Dec 20 14:28:07.101 CET: %SEC-6-IPACCESSLOGP: list 100 denied udp
193.74.xxx.4(38028) -> 10.63.xxx.2(49872), 5 packets
Dec 20 14:28:07.101 CET: %SEC-6-IPACCESSLOGP: list 100 denied udp
193.74.xxx.4(38058) -> 10.63.xxx.2(49516), 9 packets
Is this true ?
Is so, is there a command to disable this behaviour and to force TFTP to
always use port UDP 69 only ?
regards,
Geert
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