We currently have a /30 external subnet to the internet (2 IP address in reality, 1 on outside of PIX, 1 on perimeter router). We want to allow 4 inside machines outbound using a variety of protocols and SMTP traffic inbound to the mail server. One of the inside machines is an HTTP proxy. I was going to use PAT oubound and static PAT inbound. Is this the best way of doing this given the lack of IPs?
Will PATing a proxied HTTP request result in degraded performance?