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**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,906

I was posting in the Help section, when some screen saying that there's error 404 and I do not have access to /forum/post on this server on port 80???

IPBLE: Increasing Performance By Lowering Expectations.

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**krassi_holmz****Real Member**- Registered: 2005-12-02
- Posts: 1,906

Here's the source of the page I got:

```
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">
<HTML><HEAD>
<TITLE>403 Forbidden</TITLE>
</HEAD><BODY>
<H1>Forbidden</H1>
You don't have permission to access /forum/post.php
on this server.<P>
<P>Additionally, a 404 Not Found
error was encountered while trying to use an ErrorDocument to handle the request.
<HR>
<ADDRESS>Apache/1.3.33 Server at www.mathsisfun.com Port 80</ADDRESS>
</BODY></HTML>
```

IPBLE: Increasing Performance By Lowering Expectations.

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**Devantè****Real Member**- Registered: 2006-07-14
- Posts: 6,400

Hmm...that very rarely happens. It occurs when you type lruc (backwards), or in brackets. I have no idea why this happens, it must be some sort of weird database glitch/bug.

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

That revelation is enough to make my toes curl.

OK not really.

Why did the vector cross the road?

It wanted to be normal.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,569

Hmm... could have been a small hiccup on the server. No on else noticed anything curly happen?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**Devantè****Real Member**- Registered: 2006-07-14
- Posts: 6,400

Type that word like this;

[ lruc ]

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**Devantè****Real Member**- Registered: 2006-07-14
- Posts: 6,400

A similar problem;

http://forums.asmallorange.com/lofiversion/index.php/t3631.html

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

[curl]

Why did the vector cross the road?

It wanted to be normal.

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**Devantè****Real Member**- Registered: 2006-07-14
- Posts: 6,400

No, do it with spaces, so, instead of it being [lruc], it would be; [ lruc ].

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,569

My goodness gracious me! It works!

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Watch and be amazed as I [ curl] the laws of the forum to my will. In this case, that will being to prove you wrong.

Why did the vector cross the road?

It wanted to be normal.

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**Ricky****Moderator**- Registered: 2005-12-04
- Posts: 3,791

"In the real world, this would be a problem. But in mathematics, we can just define a place where this problem doesn't exist. So we'll go ahead and do that now..."

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,569

Just "curl_" is enough where _ is a space.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**Devantè****Real Member**- Registered: 2006-07-14
- Posts: 6,400

mathsyperson wrote:

Watch and be amazed as I [ curl] the laws of the forum to my will. In this case, that will being to prove you wrong.

ORLY

[ curl]

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

Copyface.

Why did the vector cross the road?

It wanted to be normal.

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**Devantè****Real Member**- Registered: 2006-07-14
- Posts: 6,400

Actually my screen displayed the text differently. Kinda weird.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,569

Good discussion of it here: http://wordpress.org/support/topic/20758

So at this stage I think the message is being intercepted by security - **curl** is a command, and because malicious software *could* use it (even embedded in a message) it simply disallows the whole thing.

It is like the security at the airport - you go "beep" and a guard steps in.

(BTW: I used "curl" here by making sure it had something around it, like quotes or bold)

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