NAT issue

[rashad.exe]

Hello All,

i have Cisco router 2900 i want to make NAT and i have 10 users and 5 public IP address connected to the ISP 

there is any way to make nat each two users to one public IP ?

thanks 

[Philip D'Ath · Accepted solution]

All the users can share a single public IP address for outbound requests to the Internet.

However if you want to configure inbound NAT the IP address (or port mappings) have to be unique.

[rashad.exe]

thank you so much 

[paul driver · Accepted solution]

Hello

Following on from Philips post

Example:
access-list 1 permit host 1.1.1.1
access-list 1 permit host 1.1.1.2
access-list 2 permit host 1.1.1.3
access-list 2 permit host 1.1.1.4
access-list 3 permit host 1.1.1.5
access-list 3 permit host 1.1.1.6
access-list 4 permit host 1.1.1.7
access-list 4 permit host 1.1.1.8
access-list 5 permit host 1.1.1.9
access-list 5 permit host 1.1.1.10

ip nat pool public1 100.100.100.1 100.100.100.1 prefix-length 29
ip nat pool public2 100.100.100.2 100.100.100.2 prefix-length 29
ip nat pool public3 100.100.100.3 100.100.100.3 prefix-length 29
ip nat pool public4 100.100.100.4 100.100.100.4 prefix-length 29
ip nat pool public5 100.100.100.5 100.100.100.5 prefix-length 29

ip nat inside source list 1 pool public1 overload
ip nat inside source list 2 pool public2 overload
ip nat inside source list 3 pool public3 overload
ip nat inside source list 4 pool public4 overload
ip nat inside source list 5 pool public5 overload

sh ip nat translations
Pro Inside global      Inside local       Outside local      Outside global
icmp 100.100.100.1:17  1.1.1.1:17         8.8.8.8:17         8.8.8.8:17
icmp 100.100.100.1:18  1.1.1.2:18         8.8.8.8:18         8.8.8.8:18
icmp 100.100.100.2:19  1.1.1.3:19         8.8.8.8:19         8.8.8.8:19
icmp 100.100.100.2:20  1.1.1.4:20         8.8.8.8:20         8.8.8.8:20
icmp 100.100.100.3:21  1.1.1.5:21         8.8.8.8:21         8.8.8.8:21
icmp 100.100.100.3:22  1.1.1.5:22         8.8.8.8:22         8.8.8.8:22
icmp 100.100.100.4:23  1.1.1.7:23         8.8.8.8:23         8.8.8.8:23
icmp 100.100.100.4:24  1.1.1.8:24         8.8.8.8:24         8.8.8.8:24
icmp 100.100.100.5:25  1.1.1.9:25         8.8.8.8:25         8.8.8.8:25
icmp 100.100.100.5:26  1.1.1.10:26       8.8.8.8:26        8.8.8.8:26

res
Paul

[rashad.exe]

thanks a lot