As far as I understand, you have difficulties with ping to server after it's restart. I need a little bit info on the issue to help you.
1. Please let me know on what machine you have the agent installed and what machine is pinged.
2. Reproduce the issue, note the time when restart took place and share logs from /opt/anturis/log or c:\programdata\anturis monitoring\.
-- Best regards,Alexander ArtamonovAnturis Support Engineer
Customer support service by UserEcho