Copying files through a firewall from LAN to DMZ?

Copying files through a firewall from LAN to DMZ?
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Subject Author Date
Copying files through a firewall from LAN to DMZ? neil.chinnery 10-11-2007
Posted by on October 11, 2007, 11:52 am
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Hi all,

hopefully this is the right place to ask!

I need a robust method to copy image files (mainly pdf's, jpg's and
tif's) from a document management system inside a corporate lan onto a
dmz to enable public access over the net.

The current methodology for this is for a scheduled task on the lan
side to uuencode new files and, having a sql*net rule (or MSSQL
equivalent, depending on the client's preferred db) on the firewall,
insert the resultant text into a field on a staging-db in the DMZ.

Another scheduled task running in the DMZ then reads the rows in the
staging-db, recreates the files by unencoded them and writing them
out.

However, this is prone to all sorts of errors - scheduled tasks can
fail, encoding process might not work for some files, database inserts
might fail, unencoding doesn't work, etc, etc.

What I really want is a single scheduled task (I don't mind where it
sits - lan or DMZ) that can copy the files over without compromising
the security of the lan.

Is there a secure method to open up a firewall in this way?

Thanks in advance

Neil


Posted by Leythos on October 11, 2007, 2:42 pm
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neil.chinnery@googlemail.com says...
> What I really want is a single scheduled task (I don't mind where it
> sits - lan or DMZ) that can copy the files over without compromising
> the security of the lan.

FTP works well and uses one port and works in one direction.

--

Leythos
- Igitur qui desiderat pacem, praeparet bellum.
- Calling an illegal alien an "undocumented worker" is like calling a
drug dealer an "unlicensed pharmacist"
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