Date: Tue, 17 Dec 2002 01:02:34 -0000 From: "Petersen" <petersen@britersen.co.uk> To: "Robin P. Blanchard" <robin.blanchard@georgiacenter.org> Cc: <stable@freebsd.org> Subject: RE: ipfilter / ipnat quandry Message-ID: <KOEDJPGCNAIOODFOCJJICEBCFMAA.petersen@britersen.co.uk> In-Reply-To: <1040064948.3dfe21b49d39a@www.gactr.uga.edu>
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Robin P. Blanchard wrote: > > The only external port I've allowed in is SSH, yet nmapping the box > yields a slew of purportedly other open ports. Have I broken my > ruleset somewhere? Please advise. > > # nmap -v -sS -O a.b.c.d <snip> > Interesting ports on name.of.host(a.b.c.d): > (The 1581 ports scanned but not shown below are in state: closed) > Port State Service > 22/tcp open ssh > 137/tcp filtered netbios-ns > 138/tcp filtered netbios-dgm > 139/tcp filtered netbios-ssn > 161/tcp filtered snmp > 162/tcp filtered snmptrap > 199/tcp filtered smux > 391/tcp filtered synotics-relay > 705/tcp filtered unknown > 1234/tcp filtered hotline > 1433/tcp filtered ms-sql-s > 1900/tcp filtered UPnP > 1993/tcp filtered snmp-tcp-port > 5050/tcp filtered mmcc > 6346/tcp filtered gnutella > 6666/tcp filtered irc-serv > 6667/tcp filtered irc > 6668/tcp filtered irc > 6699/tcp filtered napster > 8888/tcp filtered sun-answerbook What slew of open ports. I see only 1 (sshd), 19 that don't appear to exist at all (ie, they aren't answering syns), and 1581 that are just closed. Petersen To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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