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Cisco Bug: CSCuj04682 - ping TCP always shows result "?" if destination IP is translated

Last Modified

Apr 16, 2020

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases


Description (partial)

When using the ping tcp feature, if the destination of the ping is translated by the ASA the response (TCP reset, TCP syn-ack, etc) is not displayed in the ping tcp CLI results. Only a "?" is shown the to the user (instead the correct code should be displayed "R" or "!").

ASA5505# ping tcp dmz 21 repeat 1 source 1234
Type escape sequence to abort.
Sending 1 TCP SYN requests to 1192.168.1.2 port 21
from starting port 1234, timeout is 2 seconds:
Success rate is 0 percent (0/1)

The ping tcp command must be used, and the destination of the TCP ping must be translated by the ASA.
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