I have a PIX 501 with three servers behind it. Two are nameservers for DNS and the third is an Exchange box. All three servers are Win2k. I want to squeeze my open ports down to the absoulte minimum that are needed open for smooth communication. After many trials and errors I would like to see what you all would think are needed open to support all the services that DNS requires as well as Exchange and OWA. Also I would like to be moble with my laptop and use outlook express to send messages when I'm away from home. While researching this I have found many listings for the common ports needed open, but I just want to be sure.
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Ports needed open for Exchange / DNS
- Thread starter spauldo
- Start date
I would go for:
25 - SMTP
110 - POP3
80 - HTTP (OWA)
443 - HTTPS/SSL (OWA)Would also recommend using this, not standard HTTP for OWA as it's not very secure. Certificates are cheap to buy and very easy to install.
53 - DNS
Hope this helps
25 - SMTP
110 - POP3
80 - HTTP (OWA)
443 - HTTPS/SSL (OWA)Would also recommend using this, not standard HTTP for OWA as it's not very secure. Certificates are cheap to buy and very easy to install.
53 - DNS
Hope this helps
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