topic Re: FTP issue in Operating System - Linux

FTP issue

bchinnat — Wed, 16 Jun 2010 15:40:41 GMT

Hi,

we are facing issue on linux server for FTP.

It's taking much time to transfer any files to it. Please advice me what are all the parameter needs to be checked from server end.

Transfering from different subnet. only for this particular server, we are facing issue.
OS: OEL 5U3
Let me know any other info needed.

Thanks In Advance...

Re: FTP issue

Wilfred Chau_1 — Wed, 16 Jun 2010 15:50:53 GMT

Is DNS configured on the FTP server?
Has port 20/21 opened (non-passive ftp)?

Re: FTP issue

bchinnat — Wed, 16 Jun 2010 15:59:06 GMT

Thanks for your reply...

No DNS configured...

Port 20/21 --- 21 I am able to connect.

Re: FTP issue

bchinnat — Wed, 16 Jun 2010 16:05:25 GMT

We are using this ftp through vsftp.. so any kind of settings we need to do in /etc/vsftpd/vsftp.conf?

Re: FTP issue

Wilfred Chau_1 — Wed, 16 Jun 2010 16:16:19 GMT

did the slowness happened during ftp sign in or overall transfer speed?

Re: FTP issue

Steven Schweda — Wed, 16 Jun 2010 16:27:28 GMT

Define "much time".

> [...] during ftp sign in or overall
> transfer speed?

Yes. Exactly what is slow? (Bad DNS
configuration can cause a delay when logging
in. Network problems can cause slow file
transfers.)

Is SFTP slow, too?

Re: FTP issue

Modris Bremze — Wed, 16 Jun 2010 19:08:25 GMT

Maybe the bandwidth is inadequate or the disks are too slow or there is restrictive QoS/traffic shaping policy in play?

Normally SFTP should be slower than regular FTP between the same boxes because of encryption/decryption overhead.

Re: FTP issue

bchinnat — Wed, 16 Jun 2010 21:47:04 GMT

Hi,

While transfering data from other server to this server( incoming traffic is slow), out-going traffice is normal only..

Re: FTP issue

Rockstar — Thu, 17 Jun 2010 08:25:25 GMT

It would be best to take a network trace from any server to this server during transfer of the files and compare it with a good trace and check if there is any network latency.

Also, check for transfer of files within the same subnet to this server and check how is the speed while doing so.

Re: FTP issue

bchinnat — Thu, 17 Jun 2010 19:28:29 GMT

With in the same subnet it is fine.. Only issue is to other subnet..

Re: FTP issue

Modris Bremze — Thu, 17 Jun 2010 19:31:34 GMT

High[er] latency and/or low[er] bandwidth segments between those two subnets? Any firewalls, traffic limits?