Tag Archives: Security

Non-root Process Listening on Priviledged Ports

Posted on 2013-02-25 by Viliam Pucik

Allow a user application to bind to a port below 1024 using POSIX File Capabilities: setcap cap_net_bind_service=+eip /path/to/the/executable

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Blocking Traffic Using Null Route

Posted on 2012-06-19 by Viliam Pucik

Blocking network traffic for a specific host without using iptables: ip route add blackhole 10.0.0.1/32 To remove the rule: ip route del blackhole 10.0.0.1/32 Compared to iptables a null route has no effect on loopback addresses (127.0.0.0/8).

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Erase Old Files

Posted on 2012-06-19 by Viliam Pucik

Erase files older than 7 days: find -mtime +7 -exec rm -rf {} \;

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