trouble: ipnat & simultaneously icmp traffic from many NATed
freebsd-questions-local at be-well.ilk.org
Mon Dec 15 13:23:47 PST 2003
=?Windows-1251?B?zOj46uA=?= <umike at inbox.ru> writes:
> What is this? How can I configure FreeBSD to ping remote_host
> simultaneously from any count of NATed computers? We really need do
> this! (We are small ISP, and have monitor programs that monitor some our
> equipment by icmp ping command and connect to some it services.
> Now when we NAT our office LAN we cannot simultaneously monitor our
> equipment from many point!)
When the ping response comes back from your remote_host, the only
identifying information on where to send it is the destination
address. If you have more than one host behind a NAT sharing the same
external address, then there's no way to distinguish between
simultaneous outstanding ping requests from different internal hosts.
The only way for this to work is to give the machines different
external addresses (which may not be the same as the internal ones).
> Once again sorry for my bad english....
Your message was quite easy to understand.
Lowell Gilbert, embedded/networking software engineer, Boston area:
resume/CV at http://be-well.ilk.org:8088/~lowell/resume/
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