All Questions
98
questions
-1
votes
1
answer
28
views
Router SNATs incoming connections [closed]
For some reason, my router changes the source IP of incoming connections.
I can't find which setting makes this happen or if this expected behavior.
For example, this connection was initiated by an ...
- 99
0
votes
1
answer
33
views
Router cannot access LAN with public IP [duplicate]
I have the following setup:
ISP
|
|
external interface (public ip)
/
Router (running OPNsense)
\
internal interface 192.168.0.1
...
- 1
0
votes
0
answers
13
views
Where is 1.1.1.1 really located? [duplicate]
I'm courious how this works:
When ping-ing 1.1.1.1 I get results of roundabout 15 ms, where 1.1.1.1 is located in California, according to iplocation.net.
When ping-ing a random ISP from California I ...
0
votes
1
answer
50
views
2 Routers for PPPoE and NAT 5 Public IP [closed]
My ISP have provided me with 5 Public IPs. I tried to NAT these 5 IPs to our local server by using this setup. The primary router will be setup for the internet connection while the one-to-one NAT of ...
- 1
0
votes
1
answer
44
views
Simple question about NAT [duplicate]
So I am learning about NAT. I understand that it changes IP from public>private and vice versa. From my understanding, when a packet or info gets sent to the public ip towards the private ip, ...
1
vote
1
answer
247
views
Communication between hosts on different local networks
I understand how NAT works in case of communication between one, local host and a server with specific public IP address. The host is sending a request, it pushes the packet with destination IP ...
- 23
0
votes
1
answer
91
views
NAT configuration behind pppoe with virtual server
my CISCO 3925 router is handling pppoe, NAT, and DHCP server..
My local LAN is 192.168.1.x and it's behind that NAT.
I'm trying to enable access to a DNS server that's on this LAN (192.168.1.191 tcp/...
1
vote
5
answers
103
views
Are there any methods of differentiate between a single computer and a NAT router?
As far as I know, a traffic from a NAT router should appear similar to traffic from one computer with a single IP address. If you do not have any access to a network (let's say you are an ISP), can ...
- 113
1
vote
2
answers
438
views
If there's a NAT-capable gateway between WAN and a switch, why is a switch helpful?
To preface this question, my question is somewhat related to what I'm trying to understand as the difference between layer 3 switches and routers. The main difference between the two is that layer 3 ...
- 121
1
vote
1
answer
564
views
If your ISP already has a gateway, why do you need another gateway with NAT to come before a layer 3 switch?
Please bear in mind that I am learning and have never set up a network with routers and switches myself. Also please bear this is sort of going to be loaded question because there are multiple layers ...
- 121
0
votes
2
answers
179
views
Public IP Configuration which has a private gateway
I bought a public IP from my ISP and they provided me with the following details.
WAN IP :10.129.69.157
LAN IP : 196.188.173.32/30
How do I configure this on my side ?
The told me to do configure as ...
- 103
2
votes
1
answer
113
views
Do NAT Gateways Need to be the First Address of the Network?
NAT gateways are often given the first usable address in an address space.
Do any protocol specs require this? Or is this just a convention?
I skimmed RFC 1918 and RFC 2663 but didn't see anything ...
- 125
3
votes
2
answers
4k
views
Configure NAT in Vyos Router
I have the following diagram, and I want that R2 and each client connected with R2 have access to the internet. For that I configured NAT in R1 with the following commands:
#set nat source rule 10 ...
user80646
0
votes
1
answer
211
views
Cisco 2851 Static NAT Entry - Similar Static Entry Already Exists
Thank you in advance.
I have a few 2851 Cisco ISR. This is my NAT Pool config;
ip nat pool NAT-Pool 38.xxx.xxx.193 38.xxx.xxx.206 prefix-length 28
ip nat inside source list 1 pool NAT-Pool overload
...
1
vote
1
answer
119
views
What's the procedure to limit a subnet on a Cisco router from seeing another subnet when both are using NAT?
I have a Cisco 891F router. The internet is hooked up to G8. The student network is Vlan 200, and the Office is Vlan 100.
(I know the internet has an internal subnet (192.168.1.5), but that's because ...
- 113