cisco asa firewall keeps having to be rebooted

I have a cisco asa 5505 firewall and my internet browsing keeps going down until I reboot the firewall. sometimes I have to reboot it a couple of times for the internet to start working again. What could be the problem here? I'm not sure where to start looking in my firewall.
knfitzAsked:
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Istvan KalmarConnect With a Mentor Head of IT Security Division Commented:
only 50 host allowing to reach the internet via your firewall, so you need to upgrade it to UL license!
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Istvan KalmarHead of IT Security Division Commented:
Hi,

I have same problem... If the environment temperature over than 26 Degree the ASA reboot or hang!

You need cooling or ventilator!

Best regards,
Istvan
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van_manCommented:
How many user license do you have? And how many users?   Does it stop letting everyone access the Internet, or just some people?
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knfitzAuthor Commented:
26 degrees fahrenheit? everyone looses internet. I didn't think there was a license issue with a firewall?
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knfitzAuthor Commented:
is there a place to look up the temp in the fireall?
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Istvan KalmarHead of IT Security Division Commented:
I have 10 user license, but it happened with other device also.... if this happening all users dropped!
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knfitzAuthor Commented:
I have never heard of a per user license with a lan firewall. are we talking about the same thing?
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Istvan KalmarHead of IT Security Division Commented:
I measured with a digital thermometer, if I open the box when the environment temperature close to 26 degree the CPU temperature is 38-40 degree!
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van_manCommented:
knfitz:

The 5505 can have a 10 user license, or 25 or 50, or unlimited.   The issue can be that when the license limit is hit, (aka the firewall sees 10 mac addresses, (if the license is for 10) of machines that are going to the Internet, and machines after that do not get past the firewall period.    

I am just saying that this could be the issue.   Can you do a show ver and see what the license count is?
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knfitzAuthor Commented:
are you talking about celcius or fahrenheit?
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Istvan KalmarHead of IT Security Division Commented:
celsius
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Istvan KalmarHead of IT Security Division Commented:
but how many computer want to use this internet via ASA?
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knfitzAuthor Commented:
around 150, but I don't believe there's licensing you buy with an asa firewall?
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Istvan KalmarHead of IT Security Division Commented:
please provide us the ' sh ver' command output...
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knfitzAuthor Commented:
can you tell me how to get that?
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Istvan KalmarHead of IT Security Division Commented:
telnet or ssh into the ASA and type sh ver
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knfitzAuthor Commented:
it wouldn't let me telnet. is there a way to get it from the GUI? that's how I usually get in.
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Istvan KalmarHead of IT Security Division Commented:
Device dashboard --> License
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knfitzAuthor Commented:
ok, which value are you looking for? inside hosts = 50. I've had this firewall for about a year and this has just started happening?
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knfitzAuthor Commented:
is that a simultaneaous connection to the internet? Are there any logs that would tell me if we had 50 on at the same time?
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van_manCommented:
That is why it sometimes works and sometimes doesn't,  the first 50 hosts get internet access, and any others do not.
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knfitzAuthor Commented:
are there any logs that would tell me for sure that we hit 50?
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Istvan KalmarHead of IT Security Division Commented:
yep

something syslog message which contains "exceeded" in red
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knfitzAuthor Commented:
where is that at in the GUI interface?
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Istvan KalmarHead of IT Security Division Commented:
log
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van_manCommented:
The log is at the bottom of the first page that comes up when you start the GUI
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Istvan KalmarHead of IT Security Division Commented:
Monitoring --> Logging --> View
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Istvan KalmarHead of IT Security Division Commented:
Hi,

I advise to reopen the question, and give some points to van_man:
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