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9.3

Teardown followed by two 'Deny' entries in PIX logs

Asked by sherryfitzgroup in Cisco PIX Firewall, Networking Hardware Firewalls

Hi,

I'm seeing long delays transferring files via FTP. The connection is initiated from the external IP. I'm hoping for some insight into these PIX logs.

Internal address is x.x.x.x
External Address is y.y.y.y
Firewall interface is z.z.z.z

-Firstly, there's an inbound Build operation from the External address to Internal Address.
 3/27/2009 6:00      Friday      6:00 AM - 7:00 AM      z.z.z.z      Built      [message removed]      PIX-6-302013      PIX      6      302013      TCP      y.y.y.y      (empty) x.x.x.x       (empty)      (empty)      22      50559      outside      dmz      50559_tcp

-The connection is closed after 16 mins
27/Mar/2009 06:16:24       z.z.z.z       Teardown       [message removed]       PIX-6-302014       PIX       6       302014       TCP       x.x.x.x       (empty)       y.y.y.y      (empty)       (empty)       50559       22       dmz       outside       22_tcp  TCP Reset-I       

-Then I see two identical DENYs from x.x.x.x to y.y.y.y (same timestamp as the TEARDOWN)
27/Mar/2009 06:16:24       z.z.z.z       Deny       [message removed]       PIX-6-106015       PIX       6       106015       TCP       x.x.x.x       (empty)       y.y.y.y       (empty)       (empty)       50559       22       (empty)       (empty)       22_tcp  RST
27/Mar/2009 06:16:24       z.z.z.z       Deny       [message removed]       PIX-6-106015       PIX       6       106015       TCP       x.x.x.x       (empty)       y.y.y.y       (empty)       (empty)       50559       22       (empty)       (empty)       22_tcp  RST

Is this normal operation? Or is the connection being reset before the FTP transfer has completed?
Thanks,
John
 
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