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Internet very slow behind ISA 2006 from one week Time

Answered Internet very slow behind ISA 2006 from one week Time

  • Saturday, January 19, 2013 2:38 PM
     
     
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    Dear Experts,

    We have ISA 2006 std. on windows 2003 with one NIC. This NIC have IP for our local office address range. The gateway is the IP of the DSL modem and DNS servers are public DNS of google 8.8.8.8 and 4.2.2.1

    Every thing was working good speed was OK! From last one week we are facing this problem, internet is very slow, browsing. When I look in ISA 2006 alerts and dashboard. I found 

    - concurrent TCP connections from One IP Exceeded

    - Denied connections per minute from One IP address limit exceeded

    - http requests from one IP address limit exceeded

    - TCP connections per min. from One IP address limit exceeded

    The above showing different IP address sources of our network, I mean it is not like there is only single IP appearing as source. We have rules as 

    - Allow Rule ( for few managers to exclude their IP and have full internet access)

    - Deny Rule ( it have like from internal to "blocked websites") users with IP other then managers when try to access blocked website are checked here

    - InternetAccess Rule( it have from localhost & internal to external) so all other staff browse internet from this rule

    Please help me to trouble shoot this problem of slow response of internet. Do you think many websites listed under "blocked websites" is creating problem?

    Kind Regards,


     

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