North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: Vonage complains about VoIP-blocking
On Tue, 15 Feb 2005, Jay Hennigan wrote: > Vonage devices initiate an outbound TFTP connection back to Vonage to > snarf their configs on initial connection and also (presumably) on reboot. > > Many, many VoIP devices do this, including Cisco phones in all major > flavors. If an ISP is blocking TFTP originated by its customers at the > border, this will cause numerous problems with many VoIP devices as > well as numerous other things where a customer needs to initiate a TFTP > session over the Internet. > > Filtering customer-initiated TFTP will cause problems with many legitimate > applications and devices. Most devices have moved to http config, sipura, snom, panasonic, etc. We moved away from tftp because of a lot of NAT and blocking issues. As far as SIP, I don't see it as a major problem since you can use any port. ><> Nathan Stratton BroadVoice, Inc. nathan at robotics.net Talk IS Cheap http://www.robotics.net http://www.broadvoice.com
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