Date: Fri, 17 Dec 2004 13:37:18 -0500 (EST) From: Lucas Holt <laffer1@foolishgames.com> To: Curtis Vaughan <curtis@npc-usa.com> Cc: freebsd-questions@freebsd.org Subject: Re: Opening ports Message-ID: <20041217133536.K24782@adsl-68-76-19-75.dsl.klmzmi.ameritech.net> In-Reply-To: <621B31FB-5058-11D9-B943-000393934006@npc-usa.com> References: <89CBFC80-5050-11D9-B943-000393934006@npc-usa.com> <621B31FB-5058-11D9-B943-000393934006@npc-usa.com>
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Does courier-imap do smtp? Sendmail doesn't listen for outside mail by default, but in some cases it does listen on port 25 witout accepting connections. look at /etc/rc.conf and see what you have enabled. (firewall, courier and sendmail related variables) On Fri, 17 Dec 2004, Curtis Vaughan wrote: > > On 17 Dec, 2004, at 09:24, Curtis Vaughan wrote: > >> I realized that apparently by default most all ports are closed on my >> 5.3-Release box. The reason I say this is because besides port 22, 80 and >> 10000 no other port seems to be open (based on a port scan). I just >> installed postfix and courier-imap and wanted to test ports 25 and 110, but >> they do not respond even though postfix is running, I have enabled the >> ports in master.cf. Also they are in /etc/services. >> >> Looking over documents and checking my install, /etc/rc.firewall is not >> enabled in /etc/defaults/rc.conf. >> >> I assume I could go through rc.firewall and set it up for those ports I >> need opened, and enable it in rc.conf, but whereas we have a >> gatewall/firewall for our company, I don't see a lot of >> reason for having all the ports closed down on this server. Is there an >> easy way to enable them all? >> >> Curtis >> > > OK, I've got courier-imap running now and it opened port 143, but there is > still no reply on 25. Which makes me think that the problem isn't the fact > that ports are closed, but that nothing is listening. > However, netstat shows: > > cod# netstat -na | grep LISTEN > tcp4 0 0 *.143 *.* LISTEN > tcp6 0 0 *.143 *.* LISTEN > tcp4 0 0 *.80 *.* LISTEN > tcp4 0 0 *.25 *.* LISTEN > tcp4 0 0 *.10000 *.* LISTEN > tcp4 0 0 *.22 *.* LISTEN > tcp6 0 0 *.22 *.* LISTEN > > So, something is listening on port 25, but why no response to telnet > requests? > > Curtis > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >
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