I have a trouble when configure the pix 515. I have config a public address (126.96.36.199) to allow a internal machine to access internet, this config is working fine. Now, i want to allow internet users to access the internal machines by using the port. Like port 25 redirect to SMTP server and port 80 redirect to my Web server. When i use the same IP address (188.8.131.52) to do the port redirection, pix shows "Overlap with another rule: static address translation for MailServer using 184.108.40.206 on intferface outside port mapping TCP 25 to 25"
Because i use 220.127.116.11 to do the internet connection and allow external user to access the SMTP and WEB server, how to configure it?
AFAIK for accessing a mail server which is in the outside network u only need to have global,nat statements with route which gives u the default route statement to the outside interface.
but if you gotta mail server in the inside lan and want to give the access from the outside public network then u need to allow acess on the particular port in which the services are running as well as the mapping to an external ip address.
in this case u need to use up static as well access-list,acess-group commands to achieve the same..
i donno about which mapping you are talking over here for accessing the outside mail server..
would suggest to check these links for more info on the same..
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