General Firewall Question ASA5510

[mmays]

                   Once you open a port. Does that port stay open? Reason I ask I have a device and sometimes you can remote into it and some times you cant so I'm trying to eliminate the the firewall as the cause of the problem.

[sean_evershed · Accepted solution]

When troubleshooting the problem try issuing the command show local-host on the ASA. This will give you some clues as to what is happening.

http://www.cisco.com/en/US/docs/security/asa/asa72/command/reference/s4_72.html#wp1306138

[Javier Portuguez]

Hi,

By definition the FW will open certain ports on demand, I mean, if a TCP connection needs to open 3389 and if the FW rules allow it then it will be opened as long as necessary.

Is this issue occurring across a VPN tunnel?

Thanks!

Portu

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[mmays]

Thanks guys I tried it this morning and I'm not having the issue anymore all I did was reboot the asa yesterday it had been up for 102 days so it must have needed a reboot to clear some stale settings or something . Thanks again.