is it possible to block indiviual IPs with the shiro.ini?
We receive a number of malicious sparql queries from an IP in France
(193.52.210.70) today
that continuously issues the following SPARQL query:
SELECT ?r (count(*) AS ?count)
WHERE{ ?x ?r ?s
{ SELECT ?s WHERE
{ ?s a ?o }
OFFSET 124639 LIMIT 1000 }
} GROUP BY ?s ?r OFFSET 0 LIMIT 10000
resulting in:
[2018-12-18 18:10:31] AbstractConnector WARN
java.lang.OutOfMemoryError: GC overhead limit exceeded
[2018-12-18 18:10:34] Fuseki WARN [424] RC = 500 : GC overhead limit
exceeded
java.lang.OutOfMemoryError: GC overhead limit exceeded
[2018-12-18 18:10:34] Fuseki INFO [424] 500 GC overhead limit exceeded
(39.946 s)
and pushes fuseki offline for a few minutes.
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Marco Neumann
KONA
