[LUGSB] Re: introduction and question

[Aaron Pellman-Isaacs]

hmmm... never realized stony filtered 25 (havent used it on campus). Makes 
sense I guess though. Do you know if that's a global policy or just 
resnet/whatever?
--Aaron
<br><br><br>----Original Message Follows----<br>From: Erez Zadok 
&lt;ezk at cs.sunysb.edu&gt;<br>Reply-To: Linux Users Group at Stony Brook 
&lt;lugsb at fsl.cs.sunysb.edu&gt;<br>To: Linux Users Group at Stony Brook 
&lt;lugsb at fsl.cs.sunysb.edu&gt;<br>Subject: Re: [LUGSB] Re: introduction and 
question <br>Date: Wed, 29 Jun 2005 09:41:05 -0400<br><br>In message 
&lt;1119985994.4640.1.camel at localhost.mnl.cs.sunysb.edu&gt;, Vinay Pai 
writes:<br> &gt; Ok, you're right.  I switched off the firewall and port 
scanned my<br> &gt; router from my lab machine and these are the ports that 
showed up as<br> &gt; &quot;filtered&quot;<br> &gt;<br> &gt; 25/tcp    
filtered smtp<br><br>The SBU campus filters port 25 among others: they don't 
want people to<br>deliver mail to any random mail server on campus: rogue 
SMTP's are spammers<br>delight.<br><br> &gt; 80/tcp    filtered 
http<br>[...]<br><br>&quot;Funny&quot; story.  OOL didn't filter those 4+ 
years ago.  In fact they boasted<br>in their ads that you could run a biz 
from home.  Then various worms/viruses<br>hit their network and they 
realized that many unprotected home PCs were the<br>culprits.  So they 
decided to filter.  *BUT* if they filter certain ports<br>for *security* 
reasons, then they open themselves to liability (customers<br>might _expect_ 
a higher level of security).  Their solution was to say that<br>the 
filtering is for businesses -- i.e., they split their service into 
two<br>classes of service -- plain home users (filtered), and business 
users<br>(unfiltered).<br><br>Erez.<br>_______________________________________________<br>lugsb 
mailing 
list<br>lugsb at mail.fsl.cs.sunysb.edu<br>http://www.fsl.cs.sunysb.edu/mailman/listinfo/lugsb<br>