A1Monitor Network Monitor TCP or Web 

Monitor multiple web or TCP servers (http, https, ftp, pop3 etc.) Receive email notification by email or pager if any can't be reached a number of times in a row
network monitor monitoring software ping tcp ftp pop3 http smtp web server monitor web server monitoring server monitor server monitoring

SNetGuard 

Block any specific URL, domain name or type of file easily! Block any specific IP address! Block annoying ad pop-up windows! Log all URLs and IPs that are visited!
url blocker ip block pop-up ads killer url filter ip filter ip monitor ad blocker