1
vote
1answer
98 views

Odd packet loss through NAT with two WAN interfaces

I have got a Linux server machine which I also use as network gateway / "router". It has three network interfaces active – two network interfaces connected to the internet over different ISPs and the ...
0
votes
2answers
163 views

How to configure cable modem router to allow port forwarding to other connected router?

I recently got a new cable model that also acts as a router. I am not super thrilled about it, but this is what my provider gave me. My previous setup was using just a cable modem and my current WiFi ...
0
votes
0answers
21 views

Custom Local Direct Route Windows

I have an external IP address of a load balancer that I want to route locally for internal servers. What's the best way to do this? I was thinking I could use the command line route command to add a ...
2
votes
3answers
50 views

PAT Internals. How is it de-multiplexed?

Question: Assuming PAT is enabled on my home internet router, how does my router know which hosts to de-multiplex packets to when it receives packets from the internet? Example: On my LAN there is 2 ...
0
votes
1answer
150 views

How to route to public IP addresses from NAT where gateway is in subnet of target public ip addresses

I have the following scenario which is giving me fits. I have a block of IP addresses on a .248 subnet. The service is Comcast, and the modem uses IP addres ending in .246. On the router for my ...
1
vote
1answer
30 views

Use a PC as a one client router/switch

I have a laptop running win7 , with two network cards wifi and normal wired (RJ45). I normally use the wifi for internet connectivity (Via a personal router). I have a raspberry pi, also with a rj45 ...
0
votes
1answer
55 views

Fully NAT incoming connections while keeping masquerading working

How would you go about the following: Note: Internet access should work at all times using the classic MASQUERADE action in the nat table's POSTROUTING chain. Now the challenge: for all ...
0
votes
0answers
625 views

Forwarding RDP connections with iptables

I have a workstation that runs Windows 7 as the host, and Ubuntu Server 12.04 in VMware on a bridged network. Both have their own static public IP address. However, I only have one hostname to work ...
1
vote
0answers
117 views

NAT routing command in windows

Is there any specific command in windows which do the following task: I want to modify the source IP address in the packet whose Destination IP is not in the private LAN, i.e., I have a virtual ...
0
votes
0answers
66 views

Difference between UPnP on router and Windows 7 PC

I have dd-wrt netgear router . Upnp service is disabled on it. I know I can also disable Upnp on my desktop machine by going in services.msc and disabling Upnp device host and SSDP. I know that if I ...
1
vote
2answers
180 views

Route/NAT/Port forwarding for one port only?

I'm not sure what is the correct term to use and I don't know what tools should I use. The only thing I have is a goal which I'd like to accomplish. I have two linux machines(A and B) and a remote ...
1
vote
1answer
303 views

ddwrt not relaying external ip addres in from an external request

I have a problem where all external requests are logged or interpreted like they are originating from the router as the log shows shows the routers ip rather then the originating clients IP. I'm ...
4
votes
1answer
926 views

Configuration for public (external) access to ubuntu guest on ESXI 5

I am setting up a demo system on a leased dedicated server. System consists of : ESXI host with 1 NIC assigned (so 1 Static IP) 64 bit Ubuntu guest as server I installed and configured the system ...
2
votes
3answers
2k views

How does the router know which device to send packets to?

my question does not concern how it moves through the internet, but how it moves through the router to a certain device. All devices connected to a router in a home network have the same external IP. ...
1
vote
0answers
399 views

Routing table on Linux not respected

I have a very specific problem, building a Linux VPN endpoint (with external VPN Gateway), which should route certain networks over the tunnel, others via default gateway. The Linux VPN should do a ...
0
votes
1answer
3k views

NAT vs Port Forwarding [duplicate]

Possible Duplicate: What is port forwarding and what is it used for? What is the difference between NAT and Port Forwarding? Are they two different names for the same thing? Could you ...
1
vote
2answers
4k views

How to alias an IP address to make DLNA resource accessible from different IP network

what I have I have a home wifi network 192.168.1.0/24 having DLNA resource 192.168.1.100. I have a TV with ethernet and a netbook with both wifi and ethernet interfaces. I want to make my notebook ...
2
votes
1answer
987 views

Connecting to my own network via external IP

Even though I have seen and read quite a few similar Q's I was still unable to understand what is required for me to be able to do this. I have an internal network. One of the machines is a web ...
2
votes
1answer
78 views

Multiple Servers, externally, through single IP

Let's say, I have a server which is directly connected to the internet (no firewall), and sits on 66.77.88.99 externally and internally sits on 192.168.0.1. I have my domain's records set up so that ...
2
votes
1answer
629 views

Linux PPTP VPN and gateway woes

I have an Amazon Linux machine running in an Amazon EC2 instance. I am connecting to my office's VPN as follows: sudo pppd pty "pptp pptp.<DOMAIN>.com --nolaunchpppd --loglevel 2 --debug" file ...
1
vote
1answer
577 views

Linux router frequently drops connections

Until a few months ago, I had my Linux desktop serving double duty as a router for my home network, and all was well. Then I set up a small Linux machine to act as a stand-alone router, and since ...
0
votes
1answer
103 views

route packets for 2 eth's

I have 2 ethernet cards on my 1st computer eth0 10.1.1.254/24 eth1 10.2.1.254/24 eth0 is connected to 2nd computers eth0 using crossover cabe which is 10.1.1.1 I can ping computer 1 eth0 from ...
1
vote
2answers
2k views

Setting up a Linux server with a public Static IP

I have setup a Ubuntu Linux server in an office. It should have a public IP so that outside users can access the internet. Currently, it is set with a public IP, but is it supposed to have a local ...
0
votes
1answer
2k views

pix 501, static route to d-link router (different subnet)

I have pix 501 cisco firewall with internal ip 192.168.10.1. I have connected d-link router (dir-655) to pix 501. The d-link router has internal ip 192.168.0.1 The picture would like something like ...
0
votes
1answer
91 views

Network problems that might be related to NAT

I have an odd setup where there is a router(Router 2) routing between network network 1 and network 2. One router(Router 1) with nat for internet access that routes between internet and network 1. ...