On 03.07.2015 11:58, Sujit Acharyya-choudhury wrote: > We have seen recently two DoS attacks on our mail gateways, but the machines > and Exim coped well. Our network administrator suggested to block ping, but > from my previous experience elsewhere it cause some problem - I cannot > recall exactly what. Any thoughts on this. I know it is Out of Topic. You mentioned that you suspected DOS attack on your mail gateway previously but never provided any details. I suspected some major misconfiguration on your side, like running an open relay or a policy of accept-then-bounce, which would be very serious issues that have to be solved.
I you don't want to disclose any details on this list, you should consider hiring external consulting. -- Karlsruher Institut für Technologie (KIT) Steinbuch Centre for Computing (SCC) Patrick von der Hagen Zirkel 2, Gebäude 20.21, Raum 004.2 76131 Karlsruhe Telefon: +49 721 608-46433 E-Mail: [email protected] Web: http://www.scc.kit.edu KIT - Universität des Landes Baden-Württemberg und nationales Forschungszentrum in der Helmholtz-Gemeinschaft
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