Quoting "Brian May" <brian@microcomaustralia.com.au>

On 26 November 2013 11:10, Petros < Petros.Listig@fdrive.com.au > wrote: Do they have a transparent proxy? If so, their proxy might be returning the 502/504 errors, not you.

I should detect it when I do a "traceroute -P tcp -p 80 www.zeit.de" (sending port 80 packets)? The packets seem to go the same way as ICMP echos ("traceroute -I"), leaving Australia.. so I don't think so. (?) Regards Peter