Argh! (Adelphia, E-mail, iptables, etc.)

[Chris]

I would personally use ssh to do that kind of redirection
On machine a ssh -g -L 25:3.4.5.6:otherport 3.4.5.6

ken at flyingtoasters.net wrote:

> Howdy, all.  Adelphia -- God bless them -- has nixed my in-bound port 25,
> so I can no longer receive e-mail on this account.  Which is highly
> annoying.
> In summary, I can no longer receive SMTP, so I'm looking for:
> some magic iptables recipe to re-direct port 25 from machine a (1.2.3.4)
> to machine b (3.4.5.6).  I've done some Googling and RTFMing, and I can
> only see how to re-direct from one port to another on the same machine.  I
> assume that there's a way to do this, but I have no idea how.  Can anyone
> point me in the right direction?
>
> Please "reply-to-all", so that this will also get sent to my work account
> (kend at xanoptix.com).  I would have sent it -from- my work account, except
> that that's not a member of the GNHLUG list, and I'd have to wait for my
> message to be moderated on through.
>
> Thanks,
>
> -Ken
>
> P.S.  Any suggestions on a good, readable iptables book?  Since it seems
> to have made it -- more or less unchanged -- into the 2.6 kernel, I'm
> guessing that we might actually (*gasp*) have the same packet filtering
> security mechanism around for a while.
>
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