Akamai caches hammering Sophos XG firewalls

Jeremy Parr jeremyparr at gmail.com
Mon Feb 5 17:28:16 UTC 2018

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 and, but I suspect that
is only due to these being closest to me, colocated at my ISP AS15146.

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