Cisco Firewall :: Email Port Open For ASA 5505?

Jan 16, 2012

when I want to let email to come through the ASA5505 from outside to DMZ and Inside network, are the below command lines correct and good enough?
 
access-list  outside_DMZ extended permit tcp outside-network-ip dmz-network-ip eq imap4
access-list outside_DMZ extended permit tcp outside-network-ip dmz-network-ip eq pop3
access-list outside_DMZ extended permit tcp outside-network-ip dmz-network-ip eq smtp
access-list outside_inside extended permit tcp outside-network-ip inside-network-ip eq imap4
access-list outside_inside extended permit tcp outside-network-ip inside-network-ip eq pop3

[code]....
 
Are there any other TCP ports want to be allowed and other command lines need to be added?

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Do I create an SMTP Network Object and send TCP traffic throught NAT?
 
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3) Create an ACL which will Deny my DHCP range to talk to the outside.
 
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[code]....

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Here is my configuration:
 
ASA Version 8.2(1) !hostname xxxxxxenable password xxxxxx encryptedpasswd xxxxx encryptednames!interface Vlan1 nameif inside security-level 100 ip address 192.168.1.1 255.255.255.0 !interface Vlan2 nameif outside security-level 0 ip address

[Code].....

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I configured ASA to open port 21, 3389, 5900 (outside access in) but when i check port just success : 21 and 3389, Error: 5900 If i configured with only one port 5900 or 3389, is't ok, i don't understand what 's the problem?
  
ASA5510>       
 ASA5510> ena           
 Password: ***********************                                
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 : Saved      

[code]....

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So here is my network.
 
ASA5505--->Cisco1841--->Cat2960
Code
ASA asa831-k8.bin
Cisco 1841 c1841-adventerprisek9-mz.151-4.M2.bin
Cat 2960 c2960-lanbasek9-mz.122-55.SE1.bin
 
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show asp table socket
TCP       001f549f  <<pub IP>>:22              0.0.0.0:*               LISTEN
 
how do i make it listen on different port?
 
Here is relevent config for SSH for cisco 1841 (port forwarding)
 
ON ASA
object network ROUTER
host 10.10.1.1

[Code].....

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