alex at samad.com.au
Fri Apr 8 00:13:51 CEST 2005
On Thu, Apr 07, 2005 at 04:14:08PM -0400, R. DuFresne wrote:
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> On Thu, 7 Apr 2005, Vernon A. Fort wrote:
> >Ted Gervais wrote:
> >>I have just discovered that people are not able to telnet to my system
> >>and I have been told that it is not because I don't have the necessary
> >>ports open but rather the problem is because of protocols??
> >>I have no idea what this means and am wondering if someone could explain.
> >>If it is needed I can supply a copy of my firewall but was wondering
> >>first if anyone has heard of this.
> >you should be able to list the open port from the iptables command:
> >iptables -L -nv
> >telnet localhost to see if telnet if running
> >from the iptables, you should see port 23 open from the ip address needing
> >access. you should also be able to telnet to the localhost.
> Which might tell him if the ports open, but not if there's anything really
> listening on the port. gre telnet /etc/inetd.conf is a better starting
> point, since he claims is rulebase allows telnet already, this so7unds
> like the ports open but there's nothing listening. If he see this
> #telnet stream tcp nowait root /usr/sbin/tcpd in.telnetd
> He needs to vi /etc/inetd.conf to enable telnet <and with tcpd for other
> sec reasons> the kill -HUP inetd and also then make sure his
> /etc/hosts.allow is setup to allow telnet, especially if he has a
> populated /etc/hosts.deny.
can always try a netstat -pane | grep 23 to see what is using/listening
on port 23
> Ron DuFresne
> - --
> admin & senior security consultant: sysinfo.com
> Key fingerprint = 9401 4B13 B918 164C 647A E838 B2DF AFCC 94B0 6629
> ...We waste time looking for the perfect lover
> instead of creating the perfect love.
> -Tom Robbins <Still Life With Woodpecker>
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