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Step-by-Step Configuration and Troubleshooting Best Practices for the NGFW, NGIPS and AMP Technologies A Visual Guide to the Cisco Firepower Threat Defense (FTD)
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PIX 525 TCP Sync

Hi,

I am using a Pix 525 (version 7.04). I have several questions about the TCP SYNC.

1) What is the default behaviour for TCP-SYNC-CHECK on Pix?

2) Does Pix have the option to disable TCP-SYNC-CHECK?

3) Does Pix send TCP_RST/FIN to both server and host in the trust & untrust interfaces when the service timeout? Or Pix only send TCP_RST/FIN to server or host residing on the higher security interface?

4) Can the sending of TCP_RST/FIN be disabled on Pix?

Rgds

1 REPLY
New Member

Re: PIX 525 TCP Sync

Hi,

Any advice on these issues?

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