Hi,
ISA server stops responding the user requests and its required to reboot the ISA server.
I have two ISA 2006 servers for internet gateway in my domain network. Users are using internet via SecureNAT client. Every morning between 11am-11:30am one of my isa server ISA-One stops internet connectivity, stops resolving users internet requests and users behind this gateway unable to browse internet. Also no PING to this isa server but remote desktop works because I already keep it logged in remotely when i come in office. Whereas second isa server works fine. Only that one isa stops working every day. Solution to this problem I use is to restart ISA server once or twice. It started happening two weeks ago and i am really frustrated. I also tried scanning it with antivirus and malwarebytes but no help. I also reinstalled this server but same problem.:(
Don't know why problem occurs on specific time every day? 11am-11:30am
Here is information about my network:
1. ISA-One (problematic isa)
Internal
IP:192.168.1.5
SM:255.255.255.0
DG: empty
DNS: Local Primary & secondary DNS servers (DC/DNS IPs)
192.168.1.9
192.168.1.10
External
IP:ISP IP Address
SM:ISP mask
DG:ISP gateway
DNS: empty
Binding Order: Internal adapter is at top.
Configured ISA ethernet adapters as suggested Here
Local Primary DNS Server
IP:192.168.1.9
SM: 255.255.255.0
DG: ISA-One IP (192.168.1.5) or ISA-two IP
Primary DNS: 192.168.1.9
Secondary DNS: 192.168.1.10
Forwarders (OpenDNS servers) are added.
Workstation:
IP:192.168.1.X
SM:255.255.255.0
DG:ISA-One IP (192.168.1.5) (isa-two works fine)
Primary DNS: 192.168.1.9
Secondary DNS: 192.168.1.10
Don't know it is malware infection which is causing it or something else.
Please let me know if you need any other info, looking forward to hear from you experts.
Thanks