DSL Router & Forwarding Ports Problem

by | Nov 7, 2005 | Networking

If you read my previous post on Troubleshooting Ports on DSL, then perhaps you will get the whole idea on how to forward ports, but as I discovered, powering off your routers may cause packet loss afterwards.

In a typical DSL setup your main DSL modem provide DHCP services, and although there is only one physical ethernet port that it connects to, unless you specifically setup the DSL modem to forward all traffic to your LAN router, chances are a reset could send packets to another ip address and all of a sudden your packets get lost going to a different ip.

To work around this, you either have to be careful about how you reset your routers or force the DSL modem to route everything to one IP address, therefore losing some of the firewall protection that the DSL modem is providing.

Here is a proper way to reset your home network and routers.

1. Turn off everything. This includes computers, routers, DSL modem.

2. Power on the DSL Modem first. Wait a few minutes until the LAN and WAN lights turn solid, usually green.

3. Power on your home router, the Linksys, Netgear, D-Link, or whatever brand you have.

4. After a couple of minutes, turn on the computers and other devices on your network.

5. Verify the NAT on the DSL modem is still setup properly and that the home router is connecting to the DSL modem with the correct IP address.

For the Cisco 678 ADSL modem, telnet into it and type:

show nat

The last lines that come up will show the last packets that were sent and what local ip they were sent to. It should be 10.0.0.2 for the 678, unless you changed it.

Javascript Bad For Search Engines

by | Nov 7, 2005 | SEO

If you are trying to improve search engine traffic, one way to help make your site bot friendly is to remove javascript from your pages. If you do not want to remove your javascript navigation completely, a nice compromise is to actually externalize javascript. You can go ahead and place your scripts in a separate directory, and then use the robots.txt file to disallow search engines from indexing this directory.

<head>
<script language="JavaScript" src="\myscriptsdirectory\external.js" type="text/javascript"></script>
</head>

This will cut down on the size of your overall web page, and let your content actually dominate the percentage of the text.

Speeding Up WordPress

by | Nov 4, 2005 | WordPress

Now this may seem rather obvious, but many WordPress users enable an option that slows down postings even when the option actually warns you that this slows down postings. If WordPress just seems slow to you when you are adding content, make sure that under Options – Discussion Options – Attempt to notify any Weblogs linked to from the article is cleared and not checked. This will stop WordPress from pinging multiple websites and slowing down the posting process.

For speeding up WordPress for viewing, you need to install WP-Cache 2, which is an excellent plugin and in my opinion one of the top essential WordPress plugins.

Once your WordPress databases grow, you should definitely take the time to optimize your MySQL databses. The process is quite simple and the benefit is immediate.

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