[fw-wiz] TFTP (Was: Re: firewall-wizards Digest, Vol 10, Issue 9)

[Carson Gaspar <carson@taltos.org>]

St John, Richard wrote:
> One of the problems we had was that TFTP can be both UDP and TCP. When
> VOIP was initiated {we run phones on remote sites through our VPNs for
> config} we had the problems you described, it was not until we noted our
> illustrious new firewall admin had opened TCP 69 and not UDP69. Once
> that was opened to the remote networks, everything started to work fine.
> Our firewall logs show that the Cisco & Mitel phones all were trying to
> pull on UDP 69

No. TFTP is UDP only (and a horrid port-changing lockstep UDP protocol 
at that - writing an app proxy for it was... interesting).

-- 
Carson
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