telnet to port 80

davee · 08-06-2003, 05:18 AM

Someone once told me that you could connect to port 80 via telnet in the same way that you could connect to port 25 for an SMTP conversation. I've tried this, with little success. Anyone heard of this?

Dave

davee · 08-06-2003, 05:26 AM

Ahhh. Always check your firewall is open ;-)

DIYLinux · 08-06-2003, 06:48 AM

Another possibility is the that on the host you are connecting to, there is no program listening on port 80. Anyway, after

telnet somehost:80

you can send HTTP commands directly to somehost. Unless you are diagnosing some HTTP problem, I cant see any use for this.

davee · 08-06-2003, 08:33 AM

The reason for trying this is a valid one. I have a box that I'd like to interegate remotely to ensure a web server is still up and functioning. I can write a script that'll poll port 80 every minute through crontab, and report back if it can't get a specified page, say index.html.

Dave

Looking_Lost · 08-06-2003, 09:56 AM

Might just be easier just using wget something like

Code:

#!/bin/bash
                                                                                
                                                                                
if ! wget http://www.mywebsite.com/index.html > /dev/null 2>&1;
 then
  echo "There was an error";
  exit;
fi
                                                                                
rm index.html

davee · 08-06-2003, 04:09 PM

The things you learn...!

Thanks for that. I've never come across wget before. I'll have a play about with it at work tomorrow. I see there's a AIX version as well, which should save me a lot of hassle. ;-)

Dave