Date: Tue, 20 Jul 1999 10:49:09 +0300 From: "Andy V. Oleynik" <andyo@prime.net.ua> To: Ivan Villalobos <denp@acnet.net> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: FreeBSD + Cisco Access Lists Message-ID: <379429F4.22FA051E@prime.net.ua> References: <4.1.19990719175537.009b7900@mailmtx.acnet.net>
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I'm not sure that this is ur case. But there are some issues about Path MTU discovery & filtering ICMP that may lead to connectivity problem. This is the URL: http://www.worldgate.com/~marcs/mtu/ Ivan Villalobos wrote: > Hi there, > > I did not know where to post this to, I hope someone can help me or clarify > this for us. > > We just started adding some FreeBSD servers to our network, but we are just > facing a problem. > > When we put an access list on a cisco router, blocking all incoming ICMP > traffic to the FreeBSD server, the server (a DNS server) is not able to > resolve any name, when we take the access list out, it works. It would > appear at first glance that there is a problem in the access list, but the > other DNS server, running Solaris x86 2.6 work just fine, same access list. > What is more, this FreeBSD installation is replacing an old Solaris x86 > server, that worked just fine with the same access list. > > My question is: is there anything special in the TCP/IP code that might be > affecting our installation of FreeBSD?, the release we are running is > 3.2-RELEASE. > > Any idea, suggestion will be GREATLY appreciated. > > Best regards. > > Ivan Villalobos > AcNet USA, Inc. > Network Services NOC. McAllen, TX. > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message -- WBW Andy V. Oleynik (When U work in virtual office prime.net.ua's U have good chance to obtain system administrator virtual money ö%-) +380442448363 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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