Date: Tue, 30 Sep 2003 09:01:13 +0100 From: "Nikolay Kanchev" <niki@amk-drives.bg> To: "echelon" <e_chelon@yahoo.com>, <freebsd-security@freebsd.org> Subject: Re: IPFILTER_DEFAULT_BLOCK & No route to host Message-ID: <009201c38729$085430d0$0d00a8c0@amkdrives.bg> References: <20030930032735.73176.qmail@web41204.mail.yahoo.com>
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You should enable ICMP protocol to your server from You are want - LAN or outside. ICMP protocol is used by ping utility. When You add IPFILTER_DEFAULT_BLOCK Your firewall stop all, that is not allowed, including ICMP packets and You can't ping server. ----- Original Message ----- From: "echelon" <e_chelon@yahoo.com> To: <freebsd-stable@freebsd.org>; <freebsd-security@freebsd.org> Sent: Tuesday, September 30, 2003 4:27 AM Subject: IPFILTER_DEFAULT_BLOCK & No route to host > Hi, > > After the option IPFILTER_DEFAULT_BLOCK is specified at kernel conf on FreeBSD 4.8 stable (cvsup'd > with tag RELENG_4_8), the machine cannot be ping'd by others on the same network. > > In addition, the machine cannot ping itself. > > ping localhost (or 127.0.0.1) -> no route to host > ping itself with its own ip address -> no route to host > > The freebsd box, with an external pppoe connection, is configured as a gateway with nat. > Interestingly, all machines on the lan can access the internet via the freebsd box normally even > though the freebsd box cannot be ping'd from these machines. > > The routing table is fine. All these problems go away if I remove the option > IPFILTER_DEFAULT_BLOCK from the kernel conf. I make clean before buildworld/kernel. > > > Thank you. > e_chelon > > > __________________________________ > Do you Yahoo!? > The New Yahoo! Shopping - with improved product search > http://shopping.yahoo.com > _______________________________________________ > freebsd-security@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-security > To unsubscribe, send any mail to "freebsd-security-unsubscribe@freebsd.org" >
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