Questions tagged [snat]

For questions about SNAT, where Source Network Address Translation (source-nat or SNAT) allows traffic from a private network to go out to the internet. For instance, you want to setup SNAT on your router at a branch office, but need help with the configuration.

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IP address source and destination translation without a gateway

I have a private network (no gateway) with a number of devices configured on one subnet (say A.A.A.0/24). I would like to change the IP addresses of all devices on this network to a new subnet (say B....
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2answers
263 views

Why ip nat {in,out}side?

Although I understand how NAT is configured on Cisco, a broader question came up about the why behind it. When configuring e.g. NAT overload, you specify a few items: An access list ... ip access-...
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1answer
72 views

Is this translation possible on a router, or do I need a proxy?

Is this possible, I cannot seem to find a solution for it.. Using NAT,I have this config (this is on packet tracer) interface GigabitEthernet0/0/0 ip address 10.1.1.1 255.255.255.0 ip nat inside ...
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2answers
43 views

How to configure snat between 2 private networks having different nat pools?

Hi, i'm having some problems with the current configuration i have on this network. I have two nat pools one for the blue square routers, and another for the yellow ones. And i'm using snat to have a ...
1
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1answer
64 views

NAT Problem Fortigate 501e v6.0

I created a VIP and am having trouble connecting this VIP to an IPv4 Policy. When I put it into the destination I get an error: "Failed to save some changes: Entry not found." I am trying to create a ...
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1answer
48 views

Client drops packet from server when SNAT is not enabled at Load Balancer

I understand that one reason we use SNAT on a load balancer for incoming requests is so that the response packet from server will go through the load balancer, where the source IP of returning packet ...
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2answers
2k views

How do you exclude an IP range on a Fortinet router?

I have a Fortinet 100D router with 5.6.2 OS. I need to set up a SNAT rule that matches everything but a certain IP range. This is easy to do on a Linux system with iptables, but not quickly apparent ...
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1answer
110 views

Need help with a scenario involving NAT

DST Host | | +-------------+ | | | RTR3 | | | +-------------+ ...
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1answer
852 views

use PAT and static nat at the same time as inside and global nat interface

I've setup a network consisting a "AUTOMAÇÃO->Automation" lan, "Rede interna->Internal network" and the WAN (f0/1). Every device is cisco except 200A (fortigate). Everyone on internal network must ...
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1answer
2k views

Internal mapped IP of other LAN segment (fortigate)

I have two LANs LAN 1 - 192.168.250.0/24 LAN 2 - 192.168.21.0/24 There is a way to use static NAT to map an IP like 192.168.21.1 to a IP of LAN1 like 192.168.250.1? The is critical to access some ...
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2answers
242 views

Internet connection sharing using iptables [closed]

Objective: I am working on an embedded Linux device with the following network configuration. Interface-1: 'wlan0' acts as an access point. Interface-2: 'eth1' connected to Internet. My objective ...
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1answer
1k views

Understanding NAT loopback problem

I'd like to understand why trying to connect to a server in the same network, using the public IP address (provided by the router/NAT), and the port doesn't' work. (I'll assume two interfaces in the ...
2
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1answer
89 views

Use of pool of addresses in source NAT

Source nat can be done using a pool of ip addresses. Suppose, I have a pool of 64 public ip addresses and I configure my nat enabled router so that whenever packets are sent outside, source nat all ...
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1answer
4k views

Cisco Static NAT with DHCP outside interface

I'm working on a Cisco 2800, trying to get it to NAT an internal RFC1918 to a WAN. The WAN (ISP) address is from DHCP. I've never worked with NAT on a Cisco before. Cisco's tech pages are also listing ...
4
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4answers
2k views

PAT and Static NAT not working together?

The HQ network is using PAT to gain access to the internet, the internal webserver needs to be accessed from the internet using static NAT. Configs: S_HQ ! interface FastEthernet0/1 switchport ...
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1answer
157 views

SNAT packages to the wrong destination while bridging [closed]

I have a Raspberry Pi physically between my switch and my client. The switch uses 802.1x authentication with an radius server. If I setup my Raspberry in transparent bridging mode everything works ...
7
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1answer
9k views

Source NATing Fortigate typical scenario

I have a small query with respect to NATing in Fortigate.I'm struck in particular by a scenario where the remote network allows users with a specific IP range with a specific port for RDP over a ...