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Old 09-30-2003, 05:29 PM   #1
KoR
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Registered: Sep 2003
Location: Herts, UK
Distribution: Red Hat 9
Posts: 2

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IPTABLES and port 25


Hi, first post so be nice

I've installed RH9 with no problems and set it up as my network's SMTP server using Sendmail. Everything's working, I can send mail from my Windows machines. However, I'm worried that I'm open to spammers using my server as I have the following line in sendmail.mc:

DAEMON_OPTIONS('Port=smtp,Name=MTA)dnl

which, if I understand, allows anyone to send mail via my server. Now, I've been told to stop this I should drop all requests on port 25 except from my local LAN. Can anyone advise on how I do this.

I've found RH easy to set up, but IPTABLES seems to be confusing me

Any help would be much appreciated.
 
Old 09-30-2003, 08:51 PM   #2
bardinjw
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Registered: Apr 2003
Location: boston
Distribution: ubuntu debian redhat fedora
Posts: 108

Rep: Reputation: 15
try using:
lokkit and redhat-config-securitylevel

they are basic firewall setup utils.
 
  


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