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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>This request sounds really familiar, I
think someone asked this same question just a little while ago but I can't
seem to find the thread for that discussion... anyways.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>If you want to block any incoming traffic
from outside your network to that port, block all incoming connections on port
25.<span style='mso-spacerun:yes'> </span><span class=GramE>As for inside
your network, a software based firewall on the server can be setup to block all
incoming connections on port 25.</span><span style='mso-spacerun:yes'>
</span>These are ways to block access.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Depending on your mail server, you can
also set it up to disallow any relaying and only permit access from certain <span
class=SpellE>IPs</span>, or from authenticated users.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I guess what it all comes down to though
is... What reasons exactly are you trying to block/secure this from telnet
for?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>If you are just simply trying to block
telnet and not people from receiving/sending their email through the server,
that can't be done.<span style='mso-spacerun:yes'> </span>Your mail
server doesn't recognize the difference between a telnet session and a
mail client.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Sorry if these seems somewhat disjointed. <span
style='mso-spacerun:yes'> </span>It is early on a Monday morning and I'm
not fully functional yet.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>-<span class=GramE>gabriel</span><o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma'>-----Original Message-----<br>
<b><span style='font-weight:bold'>From:</span></b> rhn-users-bounces@redhat.com
[mailto:rhn-users-bounces@redhat.com] <b><span style='font-weight:bold'>On
Behalf Of </span></b>jijo john<br>
<b><span style='font-weight:bold'>Sent:</span></b> Sunday, March 06, 2005 7:17
AM<br>
<b><span style='font-weight:bold'>To:</span></b> sendmail+faq@Sendmail.ORG<br>
<b><span style='font-weight:bold'>Cc:</span></b> rhn-users@redhat.com<br>
<b><span style='font-weight:bold'>Subject:</span></b> [rhn-users] Blocking
Telnet </span></font></p>
<p class=MsoNormal style='margin-left:.5in'><font size=3 face="Times New Roman"><span
style='font-size:12.0pt'><o:p> </o:p></span></font></p>
<p style='mso-margin-top-alt:5.0pt;margin-right:0in;margin-bottom:12.0pt;
margin-left:.5in'><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> <br>
Hai<br>
<br>
I am using Fedora core 1<br>
I want to block telneting to smpt port<br>
how can I block or secureing my telnet port from outside network and<br>
inside network<br>
<br>
thanks<o:p></o:p></span></font></p>
<p class=MsoNormal style='margin-left:.5in'><span class=GramE><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>jijo's</span></font></span><br>
<br>
<br>
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