On 15 July 2010 10:40, Basil Chupin <[email protected]> wrote: > On 15/07/10 10:13, Callan Jefferson Davies wrote: >>> My advice: ignore grc.com. :-) >>> >> >> I'll pipe up here and agree with that statement - there's absolutely no >> need to go blocking pings. >> >> I work for an ISP (Adam in Adelaide) and get this question a lot from >> customers, and also talk to a lot of customers that have gone and >> blocked pings. >> >> Here's a couple of items for consideration : >> >> - people generally want to block pings to be protected against ping >> "floods" >> >> - blocking pings only stops your router from replying to pings, it >> doesn't stop someone sending you pings. so a ping flood can still happen. >> >> - these days, if someone wants to discover you on the Internet, >> they're probably going to port-scan you, not ping you. Once they port >> scan you, maybe they'll find a (web, mail, ssh etc) server. Then they'll >> try to exploit that server. If you're not running any servers, no >> problem. If you are running servers, then blocking pings won't offer any >> benefit. >> >> - if you're having issues with your Internet connection and you call >> your ISP, they're probably going to try a ping to see if your connection >> is online. Blocking pings makes technical support difficult! >> >> >> The above just represents my thoughts, but if anyone reckons I'm wrong >> about something please do speak up! >> >> Cheers >> Callan >> > > Thank you everybody for the responses. I have been assured. > > I shall now ignore grc.com :-) . >
Basil, I would not go to the point of ignoring grc.com, just use it as a guide/reference. If you a really worried get a friend to nmap you for example: # nmap -sS -sU -O -p 1-65535 -v -P0 <IP_ADDRESS> Note that nmap command can take a long time Regards Dale -- [WWW] http://quail.southernvaleslug.org/ "The significant problems we face cannot be solved at the same level of thinking we were at when we created them" - Albert Einstein -- ubuntu-au mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-au
