Kategoriarkiv: Old Base

Forward and encrypt trafic with ssh

Udgivet den juli 10, 2004 af mike

Keep network traffic to arbitrary ports secure with ssh port forwarding. In addition to providing remote shell access and command execution, OpenSSH can also forward arbitrary TCP ports to the other end of your connection. This can be extremely handy … Læs resten →

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PPTP Tunneling

Udgivet den juli 10, 2004 af mike

Set up quick and easy VPN access using the Point-to-Point Tunneling Protocol. The Point-to-Point Tunneling Protocol (PPTP) is basically a means to set up PPP tunnels [Hack #81] automatically without needing to manually start a PPP daemon on the remote … Læs resten →

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Set up IPSEC under linux

Udgivet den juli 10, 2004 af mike

Secure your traffic in Linux with FreeS/WAN. The most popular way of configuring IPsec connections under Linux is to use the FreeS/WAN (http://www.freeswan.org) package. FreeS/WAN is made up of two components, KerneL IP Security (KLIPS) and pluto. KLIPS is the … Læs resten →

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Set up IPSEC under freebsd

Udgivet den juli 10, 2004 af mike

Use FreeBSD’s built-in IPsec support to secure your traffic. Using IPsec with IKE under FreeBSD requires enabling IPsec in the kernel and installing a user-land program, racoon, to handle the IKE negotiations. You’ll need to make sure that your kernel … Læs resten →

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Sniff the ether remotely

Udgivet den juli 10, 2004 af mike

Monitor your networks remotely with rpcapd. If you’ve ever wanted to monitor network traffic from another segment and use a graphical protocol analyzer like Ethereal (http://www.ethereal.com), you know how time-consuming it can be. First you have to capture the data. … Læs resten →

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Collect statics via IPTABLES

Udgivet den juli 10, 2004 af mike

Make your firewall ruleset do the work for you when you want to collect statistics. If you want to start collecting statistics on your network traffic but dread setting up SNMP, you don’t have to worry. You can use the … Læs resten →

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Argus monitor and keep trail of trafic

Udgivet den juli 10, 2004 af mike

Use Argus to monitor your network and to keep an audit trail of your traffic. Wouldn’t it be nice if you could keep a complete record of everything that happened on your network? It would certainly help to track down … Læs resten →

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NTop web interface to show network usage

Udgivet den juli 10, 2004 af mike

See who’s doing what on your network over time with ntop. If you’re looking for real-time network statistics, check out the terrific ntop tool (http://www.ntop.org). It is a full-featured protocol analyzer with a web frontend, complete with SSL and graphing … Læs resten →

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graphs with rrd tool

Udgivet den juli 10, 2004 af mike

Use RRDtool to easily generate graphs for just about anything. You may be familiar with graphing bandwidth usage with tools such as MRTG. From a security standpoint it’s useful to graph bandwidth usage, since it can help you spot anomalous … Læs resten →

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Use nagios to monitor services

Udgivet den juli 10, 2004 af mike

Use Nagios to keep tabs on your network. Since remote exploits can often crash the service that is being broken into or cause its CPU use to skyrocket, you should monitor the services that are running on your network. Just … Læs resten →

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