[Asterisk-Users] Working: TFTPd for NAT'd Cisco 7960 and ATA-186

[John Todd]

Hmm... tftpd works fine for me through NATs and firewalls.  We're 
using "stock" tftpd on OpenBSD and Solaris 8 to serve files to 7960's 
behind all sorts of firewalls and NATs.

JT



>For anyone who is interested, I have a working tftpd (modified wvtftpd)
>capable of serving configuration, dialplans, and ringtones to Cisco
>7960/7940 and ATA-186 devices that are located behind NAT firewalls. As
>TFTP is not a very firewall/NAT friendly protocol, I had to break some
>rules to get it to work with these cisco devices. It might cause
>problems for other TFTP clients, but it works with the cisco's which I
>needed.. Your tftp server can also be located behind a NAT or firewall
>if you forward or open UDP/69 to the internal machine.
>
>If anybody else needs to do this, just let me know. I am still trying to
>get rid of some bizarre delays, but I will send you a diff when It's all
>said and done.
>
>Also, I am looking for the Cisco's 'cfgfmt.exe' tool or compatible
>utility that is used to create the binary TFTP'able configuration files
>for the ATA-186. I can't seem to find it anywhere on their site -- it's
>not with the firmware downloads or anything! Can anyone help?
>
>John
>
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