// post · 588

New Server

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Our web server died a few weeks ago, I was lucky enough to borrow a spare DL380 G1 from work. Although we still have it, I'm not sure if we'll be able to keep it.


So this new server is a DL360 G1 (1 rack unit):
  • Dual Pentium 3 1.266GHz (512K L2 Cache)

  • 256mb Ram (we will upgrade it if it goes into production)

  • 18gb SCSI HDD

  • 2 100mbit onboard nics


Here is what it looks like:
DL360

// post · 587

Contacts - LDAP

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I finally setup LDAP on Kerio. I now have my contacts synced with webmail, mac address book and my phone. Awesome.

kerio-contact-sync


Anyone who uses our email server can now make use of this too.


The server (mail.lttd.net) allows secure LDAP connections on port 16360 (636 is the standard port but the mail server is also a domain controller, so that port is in use).


More details can be found in the Kerio User Manual:
http://download.kerio.com/dwn/kmsug6-en.pdf

// post · 583

Spam System Upgraded

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I'm testing out a new spam system I quickly wrote.


Hopefully now if you're either logged in or have posted before with the same email address your comment shouldn't be deleted.

New Spam System


I plan to add more tests (see post below) later.

// post · 582

Spam

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Argh. Too much spam is getting through again; even with Akismet. So I'm in the process of writing a new spam class. The aim is to build a comment score (similar to email spam filtering programs) based on the following:
  • Email Address/Name/Website

  • Comment Body (number of links etc)

  • If the user is registered

  • If the user has successfully posted a comment before

  • white and black lists

  • response from akismet

  • how old and how many comments a post has


So hopefully I can cut down the spam.

// post · 581

Servers Moved

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And that should be the last time for a while.


IP Addresses

Web: 202.129.82.194

Mail: 202.129.82.193


EDIT: Looks like some of our secondary DNS servers (rollernet.us) are having problems updating. I've just made some changes to try and fix it.


We've also just purchased an SSL Certificate for mail.lttd.net, so the primary mail server address will soon be mail.lttd.net.

// post · 579

Juniper SSG 5

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We'll I finally got my new Juniper SSG 5 firewall (the replacement model for my old Netscreen 5gt).


I ordered it back in November, originally I was going to get the wireless version but they were still out of stock early this year so I ended up getting the base model (with 256mb of ram).


The main reason for the upgrade was that we'd run out of VPN tunnels (the 5gt did 10). The new version supports 25, plus it upgradeable to 40.

The SSG also has the following advantages over the 5gt (I'm comparing the base model 5gt and SSG 5):


  • 4000 sessions, up from 2000

  • 25 VPN tunnels, up from 10

  • Unlimited users, up from 20 (my 5gt has an upgrade to support 20 users)

  • 7 ethernet interfaces, up from 5 (plus they aren't limited in terms of zones like the 5gt).

  • DMZ support (we've just got a subnet so this should be useful)

  • Support for ScreenOS 6 which should be out this year

  • Faster (160mb firewall (from 75mb), 40mb VPN (from 20mb))

  • 256mb Ram, up from 128mb

  • 64mb Flash, up from 32mb

So the device is pretty much double everything that the 5gt is.


It also cost me double. I got the 5gt off ebay for $320, where as the SSG 5 new cost me $640. I got a really good price on it has Bryn was able to sign up as a Juniper reseller, the SSG 5 is about $1200 retail.


The main limitation of the old Netscreen 5gt was the port modes.


The port mode defines what zone (untrust, trust, dmz etc) each ethernet interface is in. Any time you needed to change this you were required to reset the device and config (see below).
Netscreen 5gt Port Modes.
Netscreen 5gt interface list

Where as the SSG 5 has something called bridge groups allowing you to easily change what zone each interface is in without resetting the device and/or config.


Much more useful if you're playing round with different network topologies (see below).
Juniper SSG 5 Bridge Groups


I've updated some of the IPSEC benchmarks to include both the SSG 5 and an old Netscreen 100 I picked up.