Skip to main content
NetApp Response to Russia-Ukraine Cyber Threat
In response to the recent rise in cyber threat due to the Russian-Ukraine crisis, NetApp is actively monitoring the global security intelligence and updating our cybersecurity measures. We follow U.S. Federal Government guidance and remain on high alert. Customers are encouraged to monitor the Cybersecurity and Infrastructure Security (CISA) website for new information as it develops and remain on high alert.

NetApp KCS Award

NetApp Knowledge Base

All Cifs sessions on a TCP stream are reset after an session logoff on one cifs session

Views:
1,889
Visibility:
Public
Votes:
2
Category:
not set
Specialty:
cifs
Last Updated:

Applies to

ONTAP 9

Issue

  • All CIFS sessions on a TCP stream are reset after a session logoff on one CIFS session
  • It results in client reconnecting, loss of access to the share, or other unexpected results depending upon the application and client OS
  • Packet trace shows multiple CIFS sessions on the same TCP stream
    • Session logoff on one SMB session
    • TCP RST,ACK (which kills all CIFS sessions on the stream)

73 2021-03-08 09:14:46.524896 0.000428 10.128.xx.xx 10.128.xx.xx 528 62107 445 SMB2 7 Session Setup Request, NTLMSSP_AUTH, User: \
74 2021-03-08 09:14:46.525837 0.000941 10.128.xx.xx 10.128.xx.xx 91 445 62107 SMB2 7 Session Setup Response
75 2021-03-08 09:14:46.526430 0.000593 10.128.xx.xx 10.128.xx.xx 0 62107 445 TCP 7 62107 → 445 [RST, ACK] Seq=4007904579 Ack=844321159 Win=0 Len=0

 

 

Scan to view the article on your device
CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support