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Network printers printing sheet with GET / HTTP/1.0 first thing in the morning

Posted on 2013-01-03
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Last Modified: 2013-01-07
We've just started having a strange issue where our network printers are printing a sheet with only "GET / HTTP/1.0" on it.  This seems to only happen with the first print job of the day, and on a couple of different brands of printers.  We are running  Print Management from a Domain Controller on Server 2008 R2.  Nothing has changed recently in environment, so I'm kind of at a loss.  Any ideas/suggestions appreciated!
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Question by:Geo_IT
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by:pony10us
ID: 38740789
Are they all using some form of HP Jetdirect for connectivity?  

Try disabling port 9100 printing and use LPD or ensure that only trusted print servers can access 9100
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by:Geo_IT
ID: 38744011
We're not using HP Jetdirect.  Would the port 9100 printing and LPD still apply?
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pony10us earned 500 total points
ID: 38744235
First of all printing comes in two basic standards:  IBM and HP.  Almost all other printers use one or the other.

It seems that nowadays, most printers support both port9100 and lpr/lpd.

Here is an interesting article about port 9100

http://stateofsecurity.com/?p=2817
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by:Geo_IT
ID: 38751363
Thanks very much for the info.  In discussing this solution with our network engineer, I discovered that he had set up a port sweep in the evenings, and this is what was triggering this behavior.  His need for the port sweep has passed, so he's disabling the sweep.
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