iPhone to Android SMS Converstion Script

As promised here’s a copy of my iPhone to Android script. Just a quick and dirty python script that reads in a backup from itunes and converts it to a bit of XML able to be read in by SMS Backup and Restore on the android platform

IRSSI Prowl Notifications

A quick script to send notifications from IRSSI for privmessages and also for highlights, I’ll put more commentary on later, but for now..

Lighttpd: mod_security via mod_magnet

In most large enterprises there is a requirement to comply with various standards. The hot potato in the Ecommerce space at the moment (and has been for a few years!) is PCI-DSS.

At $WORK we have to comply with PCI-DSS with the full audit and similar occurring due to the number of transactions we perform. Recently we’ve deployed lighttpd for one of our platforms, which has caused an issue for our Information Security Officers and Compliance staff.

PCI-DSS 6.6 requires EITHER a Code review to be preformed, which whilst this may seem to be an easy task, when you’re talking about complex enterprise applications following a very……… agile development process it’s not always an option. The other option is to use a WAF (Web Application Firewall). Now there are multiple products available that sit upstream and perform this task. There is however an issue if you use SSL for your traffic. Most WAF will not do the SSL decryption / reencryption between the client and server (effectively becoming a Man in the Middle). There are however a few products which do this, F5 networks’ ASM being one that springs to mind. Unfortunately this isn’t always an option due to licensing fees and similar. An alternative is to run a WAF on the server its self. A common module for this is Mod_Security for Apache. Unfortunately, a similar module does not exist for Lighttpd.

In response to $WORKs requirement for this I’ve used mod_magnet to run a small lua script to emulate the functionality of mod_security (to an extent at least!). Please note that mod_magent is blocking, so will cause any requests to be blocked until the mod_magnet script has completed, so be very careful with the script, and ensure that it’s not causing any lag in a test environment, prior to deploying into live!

Below is a copy of an early version of the script (most of the mod_security rules that we have are specific to work, so are not being included for various reasons), however I’ll post updates to this soon.

/etc/lighttpd/mod_sec.lua

The following needs to be added to lighttpd.conf to attach this LUA script via mod magnet

*Update – 23 Aug 09* Updated to return code even if one test passes*

Comments or suggestions are appreciated!

RouterBoard as a Home Router – 7 Months on – Part 1

At the new year I decided that I was fed up with having my main Unix server acting as a Router (amongst other things) and decided to bite the bullet and get a full blown router. Here in lay a dilema. Being the fact that I’m a geek, I couldn’t settle for a “home” unhackable router. So this instantly ruled out most of the commercial available routers, baring those that run OpenWRT. Now don’t get me wrong, OpenWRT is more than capable, but I just didn’t feel like having to worry about hardware support, fighting with IPTables and getting hardware that probally wouldn’t scale. Now before anyone starts thinking “Scaling, but this is for a home connection!”, this is true. However I do sync my DSL at the full  24244 kbps Downstream, and 2550 kbps upstream (I live under 200m from the exchange according to my line attenuation, also my ISP doesn’t bandwidth cap, and allow for FastPath and similar to be enabled. Go BeThere!) . Also at the time, I was seriously considering investing in a secondary connection for additional bandwidth. This meant that I was left with a few choices

  • Build my Own. Using something like an ALIX/Sokeris and use something like FreeBSD (or something with a webgui for when I feel rather lazy, such as m0n0wall or pfsense. Both I’ve used previously with great success)
  • Cisco. Yes, the 800 pound gorrila of home. A ‘cheap’ 1800 or similar was going to set me back about £400, however this would have provided me most of what I needed.
  • RotuerBoard. These where, to me at least, relativly unknown. I originally looked at them for building my own system with them, and then discovered RouterOS came with the boards. This was an instant sale.

After my first look at RouterOS I was basically sold. Main reasoning behind this was that it was a comercial Linux distribution, that actually worked well as a router, and shipped with both a CLI (Nortel-esq in this case) and a *shock* gui application. It also met my main criteria.

  • Support for 802.1Q. I have multiple vLANs at home so having support for dot1q was a necessity
  • Support for 802.3ad. As I have a few machines connecting via the router, I needed the throughput, as I don’t have gigabit switching LACP support was a necessity.
  • Support for Wireless. All good routers for the home (even a geeky one) need support for 802.11(a/b/g).
  • Support for SubSSIDs. Relating to the above, I didn’t want to have 7 wireless cards for my various networks
  • Support for WPA2-PSK and WPA2-EAP. I use RADIUS to authenticate all my personal stations to a central authentication system, but I don’t want to have to add guests to this, so PSK should also be supported.
  • Support for OpenVPN. I don’t like having my traffic to / from home going in the clear at all, so I needed to be able to connect via a VPN of some sort, My preference is OpenVPN for c2s vpns (s2s is still IPSEC…. which leads onto the next point)
  • Support for IPSec. I connect to various friends networks, and yet again, don’t want this sort of traffic in the clear, we made the standard IPSec (3des/md5) a while back
  • Support for “Unlimted” Firewall rules. This may sound silly, but anyone who has worked with the lowend Sonicwalls will know what I mean, only being able to put 20 rules is EXTREMELY restrictive especially with multiple vlans! (I’ve got roughly 300 rules)
  • Support for setting DHCP options. I used VMWare ESX at home for my test lab, so I require to be able to setup the DHCP server to be able to send the correct options for PXE (or gPXE) so this was a requirement
  • Quick booting. As silly as this may sound, I don’t want boot times of upwards of 30 seconds for my router.
  • Support for Bridging of interfaces with Firewall rules. This one is rather self explanatory really!
  • Support for UPnP. Lets face it, UPnP is required for any form of Voice/Video chat these days over the main IM networks (YIM/AIM/MSNIM)
  • Support for NetFlow or similar. This one is a nice to have, as I like to use flow-tools to generate a rough guess on what type of traffic is flowing through my network
  • Support for Traffic Shaping. Ah yes, the holy grail of routers. Unfortunately the likes of TC on linux requires a degree in astrophysics to get working how you’d like!
  • Easy configuration.

After discovering (via the x86 installable and the demo units) that RouterOS would let me do all of the above, I decided to give it a whirl.

Issues with OS X 10.5 iTunes 8.1.1 and mt-daapd (aka Firefly Media Server)

I’ve recently upgraded my iTunes installation on my MacBookPro to 8.1.1 and to my horror found that I’m no longer able to connect to my DAAP library on my NAS.

This is rather strange as the issue has only just appeared in 8.1.1 and does not appear on my windows machines which reside on a different network, and have Bonjour / Rendezvous mDNS traffic broadcast locally by RendevousProxy. After much annoyance, I decided to do a quick check of what an older iTunes library was sending out, and comparing that to Avahi. It turns out that my Avahi configuration was missing some vital Text Records. This wasn’t an issue in previous revisions of the iTunes client, but appears to be an issue in 8.1.1.

I updated my daap.service file in /etc/avahi/services/ to the following

And restarted Avahi for good measure and now can connect to my mt-daapd library again!