Date: Tue, 26 Mar 2002 15:11:46 -0600 From: "jogegabsd" <jogegabsd@yahoo.com> To: <nl3481@wi.rr.com>, "Justin L Boss" <jlboss@yahoo.com> Cc: <freebsd-questions@FreeBSD.ORG> Subject: RE: Security! Message-ID: <PJEDLKMCAOJCKEBNIJNOCEIECDAA.jogegabsd@yahoo.com> In-Reply-To: <3CA0A724.AB91AC55@wi.rr.com>
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I think they refer that you should be careful with a flood of ping messages and get a DoS, take a look at this links. http://www.networkice.com/Advice/Underground/Exploitz/Floods/Ping_Flood/defa ult.htm http://www.cert.org/advisories/CA-1998-01.html You can recieve a really large amount of ICMP echo request packets to the point you have to many, which means, DoS. I really don't remember specific names right now, but there are a lot of companies that denied ICMP packets from the outside, in order to fix this. Actually it is a security policy in most systems. Don't worry that you can not see if your site is reachable or not. there are several tools (e. g. nmap) that makes a diferent kind of analysis(SYN) to see if your network is reachable. you can keep the ICMP packet traffic from the inside. Hope this helps Gerardo Amaya > -----Original Message----- > From: owner-freebsd-questions@FreeBSD.ORG > [mailto:owner-freebsd-questions@FreeBSD.ORG]On Behalf Of Nick Lozinsky > Sent: Tuesday, March 26, 2002 10:52 AM > To: Justin L Boss > Cc: freebsd-questions@FreeBSD.ORG > Subject: Security! > > > Thanks to a previous thread, I am more aware of Internet security > than ever! > According to Symantec and it's scan on the Internet, I was > reported that half > of my ports were open and therefore leaking. So, I got rid of > every hole so far > but one, ping, how is ping unsecure and what can I do to take care of it's > vulnneurability? > > Thanks > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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