SMTP filtering
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I am new to PFsense and am hoping to get some advice/help on how filter SMTP Traffic. I have a comcast connection with a block of 5 static ip addresses, i have setup the ips as virtual ip addresses. What i want to do is block outgoing smtp traffic on all pc's except the servers. I also need to route the outgoing smtp traffic from the servers that have permission to go out over one of the Virtual IPs. I know it is all in the firewall rules but im not quite sure which way to go about it, any assistance would be great.
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You need firewall rules to block smtp traffic and an outbound nat rule to force a ip to the server hosts.
pfsense rules are top down, so create the allow server rules before deny smtp rule.
att,
Marcello Coutinho -
Would you be able to give me a little more detail on how to setup the outbound nat rule, i have been racking my brain to figure it out.
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on firewall -> nat -> outbound nat
change mode to manual and add mapping rule with:
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interface: outbound interface you want to force the ip(wan2 for example)
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source: smtp server ip address
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source port: any
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destination: any
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destination port: any or 25
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nat address: interface address or virtual ip
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