[UCLA-LUG] securing tftp service on linux

[Tan Toh Hwee]

Hi,

l am trying to restrict the TFTP access to only a restricted subnet. From
the sniffer trace, it seems like tftp randomly use a UDP port for transfer,
only the initial connection is using port 69. Hence if l only allow UDP
traffic from port 69 to pass through using ipchains, TFTP will fails. How to
allow TFTP traffic to pass through using ipchains? l am using red hat 6.0. 

Thanks
   
Best Regards,
Toh Hwee Tan