Category Archives: Security

Cisco RVS4000: how to restrict access to forwarded ports

Imagine you have a firewall and want it to forward external traffic a specific internal port only if the source address matches some criteria. Easy? The requirements in question are as simple as can for a Cisco “business security gateway” – or better for absolutely any kind of “thing” claiming to function as a “firewall”. Well, Continue Reading →

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you have been hacked: zend_ion_index.php, wp_admin.php and inndex.php

From time to time, operating internet services can be quite demanding, especially when things don’t run the way they should. A perfect example for this is what happened yesterday. We were notified by an automated watchdog service that one of the systems we are operating on behalf of our customers had been compromized by some Continue Reading →

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