Secure file transfer with SCP

[holt0202]

I know this is not a putty forum, but I thought that some of you may be using this. I am trying to use Putty pscp to transfer files to and from my routers. I can pull files from the router with no problem. When I try to push a file to the router, it will accept my credentials and I can look in the flash on the router and it shows the file as there, but after a minute the scp connection says "Fatal: Server unexpectedly closed network connection" and when I look in the flash on the router the file is gone. I have looked at the traffic on the ACL's and do not see anything hitting a deny statement. Any ideas why this is failing?

Here is a debug ip scp log when trying to push a file:

*May 30 16:00:20.968: SCP: [22 -> 10.3.3.242:1353] send <OK>

*May 30 16:00:21.000: SCP: [22 <- 10.3.3.242:1353] recv C0644 7284 ch203.cfg

*May 30 16:00:21.004: SCP: [22 -> 10.3.3.242:1353] send <OK>

*May 30 16:00:21.388: SCP: [22 <- 10.3.3.242:1353] recv 7284 bytes

*May 30 16:00:21.388: SCP: [22 <- 10.3.3.242:1353] recv <OK>

*May 30 16:00:21.388: SCP: [22 -> 10.3.3.242:1353] send <OK>

I appreciate any help. Thanks!

[smahbub]

The Secure Copy (SCP) feature provides a secure and authenticated method for copying router configuration or router image files. SCP relies on Secure Shell (SSH), an application and a protocol that provide a secure replacement for the Berkeley r-tools.Check the configuration of SCP using the guide in the URL.

Rfer the following url for more information on scp config and usage with SSH:

http://www.cisco.com/en/US/docs/ios/12_2t/12_2t2/feature/guide/ftscp.html

[holt0202]

I went by this document to set it up, and it is working for pulling files from the router, but when I try to push a file to the router it acts like it is working then just fails. As mentioned earlier there are no traces of failure in the debug logs....still no solution

[michael.leblanc]

Experiencing the same issue (able to read from IOS file systems, but unable to write to these same file systems) with Putty's PSCP.

Copying From the IOS device (Works)

....................................

> pscp username@ios-device:startup-config .

> pscp username@ios-device:nvram:startup-config .

> pscp username@ios-device:flash:crashinfo_20081104-163509 .

Note: The period "." at the end of each cmd line specifies the current local directory on the PC as the target.

Copying To the IOS device (Does not work)

........................................

> pscp c:\x-Backup.txt username@ios-device:x-backup.txt

> pscp c:\x-Backup.txt username@ios-device:nvram:x-backup.txt

> pscp c:\x-Backup.txt username@ios-device:flash:x-backup.txt

Note: Each results in the following error message conveyed by PSCP:

"Fatal: Server unexpectedly closed network connection"

Note: The file I attempted to write has a status of "[deleted]".

ios-device#sh flash

System flash directory:

File Length Name/status

1 12908840 image-file-name.bin

2 242285 attack-drop.sdf

3 308489 crashinfo_20081104-163509

4 1059 x-backup.txt [deleted]

[13460936 bytes used, 3054132 available, 16515068 total]

16384K bytes of processor board System flash (Read/Write)

Anyone successfully writing to IOS file systems with PSCP?

[Bucky]

I know this is years later but maybe this will show up in someone's google search:

1) Enable scp per the cisco documentation on target cisco device

2) Using pscp on a windows box this is the string I used to connect to a C9800-80

         pscp -scp -v path_to_your_file  user@ip_address:bootflash:/dest_file_name

Depending on device you may have to change bootflash:/ to flash:/ or flash0:/ etc

[mjwald3200]

add another year and a half. 

This is exactly what i was looking for

Thanks Much!

[tyoung008]

Hi @Bucky ,

Three years later thank you!

Tom