Solved

CISCO ASA 5520, FTP Timeouts

Posted on 2013-12-16
9
777 Views
Last Modified: 2013-12-17
We have recently moved to an ASA 5520 and finding that our FTP connections are timing out when downloading large files.

I can use the ASDM and the CLI but cannot find anything definitive to increase the time out for FTP connections...

Any help is much appreciated!

Thanks
BF
0
Comment
Question by:bigfooter
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
9 Comments
 
LVL 6

Expert Comment

by:Ramakrishna Prabhu
ID: 39721928
What policies have been enabled currently? Can you paste the configuration?
0
 

Author Comment

by:bigfooter
ID: 39721945
Hi

policy-map type inspect dns preset_dns_map
 parameters
  message-length maximum client auto
  message-length maximum 512
policy-map global_policy
 class inspection_default
  inspect dns preset_dns_map
  inspect ftp
  inspect h323 h225
  inspect h323 ras
  inspect rsh
  inspect rtsp
  inspect esmtp
  inspect sqlnet
  inspect skinny  
  inspect sunrpc
  inspect xdmcp
  inspect sip  
  inspect netbios
  inspect tftp
  inspect ip-options
!
service-policy global_policy global
prompt hostname context
call-home reporting anonymous

: end
0
 
LVL 12

Accepted Solution

by:
Henk van Achterberg earned 500 total points
ID: 39722669
can you lower the MTU to 1300 (just to test) on the WAN interface?
0
NEW Veeam Agent for Microsoft Windows

Backup and recover physical and cloud-based servers and workstations, as well as endpoint devices that belong to remote users. Avoid downtime and data loss quickly and easily for Windows-based physical or public cloud-based workloads!

 

Author Comment

by:bigfooter
ID: 39722711
On the external interface? Will this not clip the bandwidth? We have 400 users on a 1Gig line
0
 
LVL 57

Expert Comment

by:Pete Long
ID: 39723286
>> Will this not clip the bandwidth?

NO, it only affects packet fragmentation

PL
0
 

Author Comment

by:bigfooter
ID: 39723420
Ok thanks

mtu management 1500
mtu Inside 1500
mtu Outside 1300

All done. how does this affect timeouts for FTP? Cheers
0
 

Author Closing Comment

by:bigfooter
ID: 39723603
Thanks
0
 
LVL 12

Expert Comment

by:Henk van Achterberg
ID: 39723610
if there is a router between your ASA and the FTP server that drops packets with a large packet size then this behaviour occurs.

You can test with higher MTU values like 1400, 1410, etc. so see which value works without problems.

I suggest you look for the highest possible value.
0
 

Author Comment

by:bigfooter
ID: 39723615
Thanks I will tweak until I hit the sweet spot.
0

Featured Post

Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

From Cisco ASA version 8.3, the Network Address Translation (NAT) configuration has been completely redesigned and it may be helpful to have the syntax configuration for both at a glance. You may as well want to read official Cisco published AS…
Many of the companies I’ve worked with have embraced cloud solutions due to their desire to “get out of the datacenter business.” The ability to achieve better security and availability, and the speed with which they are able to deploy, is far grea…
Both in life and business – not all partnerships are created equal. As the demand for cloud services increases, so do the number of self-proclaimed cloud partners. Asking the right questions up front in the partnership, will enable both parties …
As a trusted technology advisor to your customers you are likely getting the daily question of, ‘should I put this in the cloud?’ As customer demands for cloud services increases, companies will see a shift from traditional buying patterns to new…

756 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question