On Wed, 21 May 2008, Kurt Fankhauser wrote: >If i deny SMTP to all but the barracudas IP then won't people not >be able to send email ?
Without knowing what gear you use or the network topology, this is not an easy answer, but the "English" version of the firewall would be something like this: 1. Allow Destination TCP/25 going to my customer's mail server if the source IP is my Barracuda. 2. Don't allow any other destination TCP/25 to my customer's mail server. This just fixes that one customer. If you want a more detailed answer, or perhaps a better handle on SMTP traffic in and out of your network, post some detail about what gear you are using and a bit of information about your network. -- ******************************************************************** *Butch Evans *Professional Network Consultation * *Network Engineering *MikroTik RouterOS * *573-276-2879 *ImageStream * *http://www.butchevans.com/ *StarOS and MORE * *Mikrotik Certified Consultant *Wired or Wireless Networks * ******************************************************************** -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
