Category: Security

Security

Securing Hazelcast (tcp) traffic with Stunnel

Hazelcast is a distributed in-memory data grid, which allows to evenly share data among nodes in clustered environments. The open source version of Hazelcast does not support encryption at the transport or even at the cache level. So in order to secure traffic in the Hazelcast cluster, we need to extend it by making some […]

Linux Security

Protect your identity from SSH servers

Recently I came across a tweet that highlighted a serious privacy issue related to SSH servers and online services that publish user information in public domain without having to explicitly take permission from users. Added a OpenSSH roaming vuln test to the whoami server $ ssh https://t.co/MSn1TEQGTs (code: https://t.co/HMIH00CxHg) pic.twitter.com/9tolWWvXZJ — Filippo Valsorda (@FiloSottile) January […]

Linux Security

Sharing VPN connection on Linux

Most VPN servers allow a single remote session per user, which is all you need most of the times. But sometimes it is necessary to connect multiple devices to the VPN server; but using a single user account it is impossible if the server doesn’t allow it. There is a way around this problem by sharing the […]

Integration Java Security Spring

Cas-Acegi-Spring integration on JBoss

CAS and Acegi are popular open source authentication and identity solutions available for enterprise java applications. CAS is a Centralized Authentication Server used for single sign-on and to decouple authentication mechanism from applications. Acegi is an authentication API used to put role-based access control on application. This is a simple example that shows how to […]

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