01-04-2009 10:13 PM
I'm setting up a couple of new SSG-140 devies running Screen OS 6.2.0. These devices will be oprating to isolate a couple of network enclaves from our main network. As such they're located behind our corporate security perimeter, and are unable to connect to the Internet, except via a Proxy server.
I'm new to configuring these devices. Everything I've read so far, in the doucmentation and knowledge base tells me that the device must have a direct connection to the Internet (not via a proxy) in order to retreive subscription updates from the entitlement server (I've subscribed to AV and DI signatures). I was wondering if there might be some kind of work-around to enable me to get the updates even though I'm behind a proxy. I'd be happy with even a kludgey, manual process, if that's what's necessary.
Thanks, in advance.
01-05-2009 09:30 PM - edited 01-05-2009 10:06 PM
This is an excerpt from the user guide regarding this:
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1. Downloading the Signature Pack
To save the signature pack to your local server, enter the following URL in the
address field of your browser. See Table 6 on page 125 for a list of predefined
signatures packs and the corresponding URLs.
https://services.netscreen.com/restricted/sigupdat
n=0043012001000213
Save attacks.bin to the local directory “C:\netscreen\attacks-db” (for loading viathe WebUI) or to your TFTP server directory C:\Program Files\TFTP Server
(when you want to use the CLI to load it).
2. Updating the Signature Pack
WebUI
Configuration > Update > Attack Signature: Enter the following, then click OK:
Deep Inspection Signature Update:
Load File: Enter C:\netscreen\attacks-db\attacks.bin
Or
Click Browse and navigate to that directory, select attacks.bin, then click
Open.If you downloaded the server, client, or worm protection signature packs, then
enter the appropriate filename.
CLI
save attack-db from tftp 10.1.1.5 attacks.bin to flash
Updating DI Patterns from a Proxy Server
You can update the DI patterns from a proxy server. This update does not require
Internet connectivity and is done offline.
To configure a proxy server:
WebUI
Security > Proxy: Set the HTTP and SSL proxy addresses, then click Apply:
HTTP Proxy: 10.0.0.5:8080
SSL Proxy: 10.0.0.5:443
CLI
set pattern-update proxy http 10.0.0.5:8080
save
NOTE: You cannot configure an HTTPs proxy, because you cannot cache an HTTPs proxy.
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The AV update procedure can be found on Pg 81 - Volume 4 of the ScreenOS 6.2 Reference Guide.
I was once stuck in the same situation as yours while trying to upgrade the license entitlement for an ISG running 5.x code.
The customer was a large university forcing all internet access through a proxy server (non-transparent). What I did was setup the proxy on my laptop and connected to the internet using wireless. Then I used the 'Internet Connection Sharing' (ICS) feature in Windows XP to let the ISG box access the internet through me. Was pretty annoying to setup, but it worked like a charm.
Regards
Farrukh