2009年3月30日 星期一
Howto block DDOS attacks on Ubuntu
Howto block DDOS attacks on Ubuntu - this ariticle shows the usage of PASD .
What is PSAD ? quoted from its home page:
"psad is a collection of three lightweight system daemons (two main daemons and one helper daemon) that run on Linux machines and analyze iptables log messages to detect port scans and other suspicious traffic. A typical deployment is to run psad on the iptables firewall where it has the fastest access to log data. "
Other tools from the same host:
fwknop - Single Packet Authorization and Port Knocking.
fwsnort - Application Layer IDS/IPS with iptables.
What is PSAD ? quoted from its home page:
"psad is a collection of three lightweight system daemons (two main daemons and one helper daemon) that run on Linux machines and analyze iptables log messages to detect port scans and other suspicious traffic. A typical deployment is to run psad on the iptables firewall where it has the fastest access to log data. "
Other tools from the same host:
fwknop - Single Packet Authorization and Port Knocking.
fwsnort - Application Layer IDS/IPS with iptables.
2009年3月9日 星期一
shared library in AIX 5L
Shared library memory footprints on AIX 5L is a good start to understand the shared-library in AIX 5.
trace system calls in aix
follow this, for aix, there are other methods.
1. truss (aix 5L)
2. sctrace (other vendor)
3. ltrace
4. trace (or syscalls(5))
1. truss (aix 5L)
2. sctrace (other vendor)
3. ltrace
4. trace (or syscalls(5))
訂閱：
文章 (Atom)