Firewalls: mail trough filtering CISCO

Firewalls
(February 1997)

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Subject:	mail trough filtering CISCO
From:	Dov Sharon <DovS @ EYRON . COM>
Date:	Tue, 11 Feb 1997 18:07:17 +0200
To:	"'firewalls @ greatcircle . com'" <firewalls @ greatcircle . com>

Hi

I have programmed my CISCO router to let only tcp port 25 into  my
network
and any protocol out of the network including full access for tcp
established connections.

The result was that outgoing mails were stuck at the mail gateway.

Are there in other port, protocols I should permit in order for smtp to
oprate corectly ?

Thanks
Dov
System Admin
Eyron Ltd

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