Very Computer

by **Robert Kant** » Mon, 14 Oct 2002 12:21:52

I am trying to use telnet and my smtp ports and I cannot make a
connection. I ran nmap and it shows those ports as open. Any ideas
why I cannot make a connection to these two ports, my others 80, 21,
110 all are functioning as expected.

Any help would be appreciated.

Thanks,
Rob

by **Paul Lutu** » Mon, 14 Oct 2002 15:27:30

> I am trying to use telnet and my smtp ports and I cannot make a
> connection. I ran nmap and it shows those ports as open. Any ideas
> why I cannot make a connection to these two ports, my others 80, 21,
> 110 all are functioning as expected.

Do not multi-post. Your inquiry has already been answered.

--
Paul Lutus
www.arachnoid.com

by **Raqueeb Hass** » Mon, 14 Oct 2002 21:09:47

Okay, check these files ... should you are using redhat 7.x ... your
telnet access is disabled by default .... make it look like this ...

$ cat /etc/xinetd.d/telnet
# default: on
# description: The telnet server serves telnet sessions; it uses \
# unencrypted username/password pairs for authentication.
service telnet
{
disable = no <--------------------- see this
flags = REUSE
socket_type = stream
wait = no
user = root
server = /usr/sbin/in.telnetd
log_on_failure += USERID

Quote:}

so your port 23 is open ...

now, regarding smtp, port 25 .... newer sendmail only listens to
localhost that is 127.0.0.1 ... should you rather open it, you have to
regenerate the sendmail.conf file by the m4 macro.

m4 /etc/mail/sendmail.mc > /etc/sendmail.cf

and you have to change the .mc file as this changes sendmail to only
listen on the loopback device 127.0.0.1 and not on any other network
devices. Comment this out if you want to accept email over the
network.

DAEMON_OPTIONS(`Port=smtp,Addr=127.0.0.1, Name=MTA')

hope this help.

raqueeb hassan
bangladesh

Very Computer

Port 23 and 25 not working

Port 23 and 25 not working

Port 23 and 25 not working

Port 23 and 25 not working