I am replacing an old firewall (Cisco ASA) with a Sophos SG. I have set the SG with the same firewall and DNAT rules as the old firewall, but the 2 IP phones that are in remote locations are not working - they cannot connect to the office and the office cannot connect to them. They work fine with the old firewall connected, and I've confirmed that the rules on the old firewall are identical to the SG (I think).
I've tried looking at the live firewall logs, but see no packets being dropped coming in or going out.
I'm obviously missing something.
Any thoughts / suggestions would be GREATLY appreciated. :-)
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