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683
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Restrict SMTP Traffic

rmwhite59
Level 1
Level 1

I am trying to restrict smtp traffic to be only allowed from my exchange server: 192.168.240.10

These are the access-list I used:

access-list 101 extended permit tcp host 192.168.240.10 interface outside eq smtp

access-list 101 extended deny tcp 192.168.240.0 255.255.255.0 any eq smtp

access-list 101 extended permit ip any any

It is not restricting clients from outbound smtp

1 Accepted Solution

Accepted Solutions

Glad it worked out, please rate helpful posts in the future.

View solution in original post

3 Replies 3

acomiskey
Level 10
Level 10

How is the acl applied? If it's not I would recommend the following.

access-list 101 extended permit tcp host 192.168.240.10 any eq smtp

access-list 101 extended deny tcp 192.168.240.0 255.255.255.0 any eq smtp

access-list 101 extended permit ip any any

access-group 101 in interface inside

That worked, thanks a million

Glad it worked out, please rate helpful posts in the future.

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