Hi all,

This question is related to my first guestion (http://www.antionline.com/showthread...821#post810821).

Now the situation is the administrator of my local lan asked me to help him to solve the problem. As the internet connectivity is lost in the morning time and after 4P.M it agains works fine. During morning hours the 'SERVER' having 'ISA Server 2000 installed on it with an external modem and LAN interface' is able to run the internet while the clients are able to connect to internet. I have observed this thing myself. We cannot even ping the 'SERVER' as there are soo much timeouts and as it takes more than 1ms and some times 400ms but in evening hours this value is 1ms or around it. I have also saw the rules in ISA to ensure that the admin is not playing with us but there was none of the suspicious rules in that. One more thing msn and yahoo messenger both can connect during that hours. When u try to load a website (in status bar there is message web site found waiting for reply) that lasts). Now i need ur comments as how to solve the problem as i have full access to the 'SERVER'. Any type of comments will be appreciated.

Note: I have also checked for arp poisioning attacks (DOS) but there was none.

mmkhan