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Internal FTP server doesn't work with VPN Clients trought ISA Server 2006

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Last Modified: 2013-11-05
We have ISA Server 2006 protecting my internal network. Recently, we decided to setup VPN clients connections to allow developers put/get files from 4 Linux servers which have FTP service configured and started.

FTP Server are only available on internal network. FTP are configured to use anonymous authentication.

When developers team are on the office, they can get and put filer on the FTP servers. When they are connected in VPN trought Internet (ISA Server 2006), they can get files, but they cannot put files  on the FTP directories.

I check logs and monitoring sessions in ISA Server but I don't see any event that shown nothing abnormal on the ISA Server settings.
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Enterprise Architect
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Top Expert 2008
Commented:
This one is on us!
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Commented:
Thanks keith_alabaster, I did untick the read-only box and applied changes. The problems isn't solved. I will describe the rule for VPN clients:

Rule Name: TOTAL ACCESS VPN CLIENTS
Action: ALLOW
Protocols: ALL OUTBOUND TRAFFIC > FTP Read-Only: DISABLED
From: VPN CLIENTS / QUARANTINED VPN CLIENTS
To: INTERNAL
Users: ALL USERS
Schedule: ALWAYS

Do you think that we must change anything in this settings?

Thanks a lot...!!!
Keith AlabasterEnterprise Architect
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Top Expert 2008

Commented:
Looks OK - what is the default gateway on the ftp server? Does it point back to the internal nic of the ISA server?
I assume you are not publishing the FTP box to the vpn clients, just routing it - does the FTP server know the route back to the vpn client subnet?
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