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FTP - Active Mode ??

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FTP - Active Mode ??

Hi,

 

We have v4.2.0 running on 2 XenServer hosts (5.6).

 

The cient machines (win 7) use FTP via command line to access our domain FTP server. These machines are on our domain and act as an "Office PC" for our remote workers. They are uising FTP to test functionaility of software they develop

 

They have acess to all resources and have been working fine. The issue is that the connection drops when connecting via cmd line FTP. It connects ok and takes the credentials but when you try and list files it disconnects. This seems a common windows issue BUT.....

 

This has worked previously. The only thing i can think of that has occured since this "broke" is i had to recreate the system VMs and destroy all VR's. This was because of troubleshooting other issues i found that the System VMs were stuck on v3.0 rather than 4.2 so i followed the procedure to upgrade.

 

Could this be the reason? I have allowed all ports in the VM network rules and it makes no difference. Its as though that channel that active mode opens, cant communicate.

 

Any suggestions ?

 

Thanks

 


Matthew Darnell MEMBERS 07 July 2014 - 08:04 AM
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FTP - Active Mode ??

Hi,

 

Active FTP needs to be able to establish a connection from source port 20, if you use windows firewall or any other firewalls please can you check to see if this traffic is allowed to pass through.

 

Kind Regards,

Dan

 

Riverlite ltd

 

Website: www.riverlite.co.uk

Twitter: @riverlite


Riverlite Support MEMBERS 07 July 2014 - 09:17 AM
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thanks Dan

 

Yes ports are open on the VM (I enabled TCP/UDP for 1-65535), the firewall in between subnets and in Windows itself (disabled)

 

This has always worked, and works from all other subnets we use internally. The only thing i can thing of is that the new 4.2 Virtual Routers need some config ? But i cant find any info on that anywhere

 

Thanks

jon


Matthew Darnell MEMBERS 07 July 2014 - 09:46 AM
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Just to update:

 

1. I have connected via SSH to the Virtual Router and cannot perform a dir via FTP

2. I have connected a laptop to the physical switch where CloudPlatform enters the network (With the 2 hosts) and the dir/FTP succeeded which should rule out all netwiork connectvitity from the hosts through to the FTP server

 

I am convinced this is an issue with the Virtual Router since upgrade. Can anyone assist ? I appreciate its not necessarily something people would notice and most would just use an FTP client or browser in Passive mode, unfortunately i need FTP.exe (active mode) to work

 

Thanks

 

Jon


Matthew Darnell MEMBERS 07 July 2014 - 11:57 AM
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ok, at the risk of going overboard replying to my own post....

 

1. The issue occurs regardless of FTP Server and client

 

2. If i setup an FTP server within the CloudPlatform network and connect via another VM it is fine (using the internal address) - presumably because traffic isnt having to go via the VR

 

I have also added open Egress rules, allowed all ports on the VM themselevs (Using Static NAT as we normally do). I have destroyed the VR, cleaned up the network. So i assume this is working as designed but there is a fault with the VR.

 

Anyone any ideas ?


Matthew Darnell MEMBERS 07 July 2014 - 14:35 PM
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