Akamai caches hammering Sophos XG firewalls

[Jeremy Parr <jeremyparr () gmail com>]

Somewhat OT, but before I was a jack of all trades enterprise
sysadmin, I was a jack of all trades ISP sysadmin.

I'm seeing an issue at a few sites where I have Sophos XG firewalls
deployed where the XG gets hammered on it's WAN interface by Akamai
hosts with TCP re-transmissions. Anyone at Akamai who may have some
background on this issue please reach out to me. The hosts currently
in question are 24.244.145.137 and 24.244.145.139, but I suspect that
is only due to these being closest to me, colocated at my ISP AS15146.