Forgot to mention kernel update
Kernel version 2.6.16.9, so I will supply its config file here config-2.6.16.9.txt. Same procedure as before. Good luck.
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Linux as a WAN router
I will discuss the issue of placing a Linux machine as a router, and some special cases where things might play a bit different. The most common scenario is of placing the Linux as some sort of PPP or DHCP-via-cables router. It might look like this: In this picture, the Linux machine actually recieves, via…
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HP ML110 G3 and Linux Centos 4.3 / RHEL 4 Update 3
Using the same installation server as before, my laptop, I was able to install Linux Centos 4.3, with the addition of HP’s drivers for Adaptec SATA raid controller, on my new HP ML110 G3. Using just the same method as before, when I’ve installed Centos 4.3 on IBM x306, but with HP drivers, I was…
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Linux IPTables flow
IPTables can be tricky. The concept of chains pointing to chains pointing to chains can get complicated. However, understanding the initial flow, the initial “which chain points where”, and the general concept which can allow, later, for easier NAT, or DNAT, or even knowing where to put a single rule is important. Especially if you…
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Web server behind a web server
I’ve acquired a new server which is to supply services to a certain group. On most cases, I would have used PREROUTE chain in my IPTABLES on my router for prerouting, based on a rule such as this: iptables -t nat -I PREROUTING -i <external_Interface_name> -p tcp -s <Some_IP_address> –dport 80 -j DNAT –to-destination <New_server_internal_IP>:80…
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Transparently Routing / Proxying Information
I was required to utilize a transparent proxy. The general idea was to follow a diagram as the one here: The company did not want any information (http, https, ftp, whatever) to pass directly through the firewall from the internal network to the external network. If we can move it all via some sort of…