Sadly, the inability to ping (or traceroute) to a host is no longer a
reliable indicator of whether or not the host is up or even if it exists.
Tools like nmap will tell you, but who knows what
paranoid-security-theater-homeland-security laws you'll run afoul of if you
scan strangers?
Sad, really, and much less useful than it use to be.
--
Peter Laws / N5UWY
National Weather Center / Network Operations Center
University of Oklahoma Information Technology
plaws@xxxxxx
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Feedback? Contact my director, Craig Cochell, craigc@xxxxxxx Thank you!
.
Re: connecting via broadband? ... > Ping statistics for 193.252.22.137: ... >> mail server and that it is responsive so you get a mail session ... >> host that responds to 'ping' does NOT mean the server program is ... >> actually running or responsive on that host.... (microsoft.public.outlook.general)
Re: host availability ... >>>google.com, my default gateway, comcast's mail server etc. ... a host was "up or down". ... If you don't get an answer to a ping request,... happened to reset the interface right then, remote system got trojaned ... (comp.security.firewalls)
RE: ICMP (Ping) ... I do like your reasoning that others do not generally have a business need ... to ping your hosts, however I still prefer to allow this service not simply ... how many hosts do not respond to ICMP echo.... DHCP server should be able to assume that if the IP were in use a host would ... (Security-Basics)
RE: Determine if Virtual PC is running ... I've just checked my source code and my code for PING actually derives from ... when pinging a local pc by host name, ... that IP-address will probably respond. ... We can check for SystemName via WMI hostname check for additional security. ... (microsoft.public.vb.general.discussion)
Re: Cannot open link on college web course page... ... If you can ping www.yahoo.com then your Internet connection is okay. ... Don't know what is WebCT.... You could also do a traceroute to their IP name/address to see if you can get to their host.... (microsoft.public.windows.inetexplorer.ie6.browser)
