Re: Possible Mail Relay or just new usages of returned mail by spammers

Tech-Archive recommends: Fix windows errors by optimizing your registry

NNTP is port TCP 119.

Do you have a firewall or router in front of your SBS? Only open inbound
ports that you want to forward.

If you have a real firewall and not just a NAT router, check this thread and
open only what you need.

http://groups.google.com/group/microsoft.public.windows.server.sbs/browse_thread/thread/f31820cd9933229d/2a75902601d3b538?hl=en&lnk=st&q=%22gregg+hill%22++firewall+ports#2a75902601d3b538

Gregg Hill






"Hollis Paul" <nospam@xxxxxxxxxx> wrote in message
news:VA.00000430.027afc65@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
In article <eEQg2rknIHA.2352@xxxxxxxxxxxxxxxxxxxx>, Gregg Hill wrote:
Exchange to receive directly in addition to the POP3
Connector, i.e., port 25 is not open on your router? Or just that you do
not
have OWA, Outlook RPC over HTTP, etc, open?

I just tumbled to the fact that POP3 uses port 110, like NNTP. By and
large, I
do not use port 25 except for outgoing messages. Most of our traffic is
browser and real NNTP, such as this.

Is there any simple way to turn off port 25 using ISA? It is easy enough
to
disable the line altogether, but I would like to keep it open when there
is
browser traffic and for NNTP.

What port is RSS be using? I have several RSS connections feeding into
Exchange.

--
Hollis Paul
Mukilteo, WA USA




.

Relevant Pages

  • Re: Routers Firewall
    ... I ask him do you have a firewall and he says yes. ... I still have an IDS/firewall on all my machines behind the router. ... > to connect to a port your public IP address the router would reject the ... > An open port on the router could be connected to a service running on the ...
    (comp.security.firewalls)
  • Re: Possible Mail Relay or just new usages of returned mail by spammers
    ... If you have ANY type of firewall, be it a NAT router or true firewall ... ISA can be used in conjunction with the router/firewall, but if you do, you ... to be done twice...once in ISA, and once in the router to port forward to ...
    (microsoft.public.windows.server.sbs)
  • Re: Home firewall Hits
    ... >Port 162 with a UDP message. ... than theres nothing blocking access from the internet to your router. ... >Subject: Home firewall Hits ... >simplify the management and deployment of PGP and reduce overall PGP costs ...
    (Security-Basics)
  • Re: Routers Firewall
    ... > indicates that it has firewall technology, then the router doesn't have a ... What your router does have is NAT. ... ZA is a fine product which will protect a computer ... Port 80 is the WEB access port and port 21 is the FTP ...
    (comp.security.firewalls)
  • Re: Bypassing the firewall
    ... Firewall in the router but i think it comes with Zone Alarm. ... >> The one thing you MUST remember is that an open port is an open port no ... >> So start your game and then start TCPview to see the ports the game is ...
    (comp.security.firewalls)