[RndTbl] Shaw now blocking SMTP port 25
sean at tinfoilhat.ca
Fri May 25 10:24:18 CDT 2007
On 23-May-07, at 6:09 PM, John Lange wrote:
> On Wed, 2007-05-23 at 10:33 -0500, Sean Cody wrote:
>> The general rule of thumb is to always use the DNS and SMTP relay of
>> your immediate upstream provider anyways.
> Yup but this is a serious pain in the *ss if you work constantly
> from a
> laptop like I do. You'd have to change the settings every time you
One thing I've done for a few $large_crown_corp people was run the
services being blocked on high ports (ie. 25 -> 2525, 22 -> 2222).
One amusing thing I've found is many $large_companies will block SSH
but allow telnet so a nice solution is to listen sshd on both (or a
There hasn't been a firewall yet that I could not break out from. :P
I was also reading an article a long while ago that suggested the
possibility of distributing upstream service information via DHCP
which I found interesting.
Of course the dhcp client has to support it but that would make
things VERY easy.
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