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computers:securitynotes [2007/03/12 14:07] davidcomputers:securitynotes [2007/04/25 12:00] (current) david
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 +====== Checking Open Ports ======
 +
 This [[http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/security-guide/s1-server-ports.html|Red Hat Security Page]] had a great list of things you can check. This [[http://www.redhat.com/docs/manuals/linux/RHL-9-Manual/security-guide/s1-server-ports.html|Red Hat Security Page]] had a great list of things you can check.
  
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 As you can see, these tools can reveal a great about the status of the services running on a machine. These tools are flexible and can provide a wealth of information about network services and configuration. Consulting the man pages for //lsof//, //netstat//, //nmap//, and services is therefore highly recommended.  As you can see, these tools can reveal a great about the status of the services running on a machine. These tools are flexible and can provide a wealth of information about network services and configuration. Consulting the man pages for //lsof//, //netstat//, //nmap//, and services is therefore highly recommended. 
 +
 +====== Dropping Unwanted Packets ======
 +
 +Some dude/dudette was flooding the apache server with requests, so I added an iptables rule to drop packets from his/her IP.
 +
 +<code>
 +# drop all incoming packets from 88.241.152.169
 +iptables -I INPUT -s 88.241.152.169 -j DROP
 +# list your iptables rules
 +iptables -L -n
 +</code>
 +
 +
computers/securitynotes.1173708466.txt.gz · Last modified: 2007/03/12 14:08 (external edit)