0
votes
1answer
105 views

access same subnet on different interfaces

I have a router with external (WAN connection) subnet 192.168.1.0/24 and also on same router a tunnel to a remote location which have the exact same subnet (192.168.1.0/24), and i need from my LAN to ...
0
votes
0answers
35 views

FTP Traffic routing through NAT prevents me from logging in

I need to send all FTP traffic to a particular server from a NAT. Server A connects via FTP to an IP which is routed to the NAT and then over a VPN. That traffic then comes back and gets routed from ...
2
votes
1answer
36 views

Should we accomodate a customer asking us to NAT servers behind new PUBLIC IPs within a VPN?

We're a SaaS provider, setting up a IPSec VPN between our data center and a customer's site so they can directly access their hosted database server from their LAN. Instead of exposing our internal ...
0
votes
0answers
62 views

Load-balancing PPTP connections

I'm trying to load balance two PPTP connections, connected to the same server. I use the following script, but there is no send and receive via PPTP connections. What part am I doing wrong? Are there ...
0
votes
1answer
64 views

How to Setup Linux Server As A Router with NAT

We have a simple router which has NAT of symmetric type, but because this router doesn't provide us with any debugging interface, we cannot figure out if a specific packet reaches the NAT or not. ...
0
votes
2answers
111 views

Accept incoming connection from a second gateway

I searched a lot about the question, but can't find solution for my situation. We've got a Windows 2003 server that runs Advantage Database Server (ADS) through which our site connects to our ...
0
votes
0answers
55 views

How to set mark on packet when forwarding it in nat prerouting table with rp filter 0?

I have a serious problem with my server ubuntu 13. I have two ADSL lines and an internal network as follows. i.imgur.com/v4ddHXf.png (URL IMG) IP redirections made ​​two because there are two older ...
1
vote
2answers
303 views

How to configure and enable NAT with server core installation

Using Microsoft Server 2012 Core: What is the equivalent core/Powershell command to enable and configure NAT. I have configured NAT on servers with the following GUI steps: Server Manager, Tools, ...
0
votes
0answers
21 views

SonicWall VLAN Device Redirection

I have a device (Network Attached TV tuner) I use on my X0 VLAN. I have a wireless (W0) device that I would like to be able to access this device on my VLAN. The problem is right now the devices ...
2
votes
1answer
200 views

Dual ISP Inbound NAT — Asymmetric routing

routing question here. In a dual ISP scenario is there way to use both external IPs and nat them to a web server in a higher security level? The issue I am running into is on the return path for ...
0
votes
0answers
109 views

Multiple virtual interfaces with multiple openvpn interfaces

I currently have 4 interfaces with static IP addresses from the local network; eth0:0 eth0:1 eth0:2 eth0:3 I also have 4 OpenVPN TUN interfaces which are connected to various servers around the ...
0
votes
0answers
41 views

MPTCP router - How can i share access to LAN network?

MPTCP is a emerging protocol that is able to split one TCP session over multiple links. In order to do that the source and destination have to be MPTCP capable. I have configured MPTCP on a linux ...
1
vote
0answers
24 views

Zyxell USG200 NAT for local computer using wan address

My WAN public address is linked to the server with NAT. How can I set up the firewall to let all local computer use the same NAT rules for www.mypublicaddress.com address from INSIDE the network? I ...
1
vote
1answer
49 views

Lost as to what I'm not doing in setting up a home lan network [closed]

I'm a PC repair tech and this is a problem I've recently been trying to troubleshoot for a customer. Upstairs they have the main router which servers as the gateway and router, both hardwired and ...
2
votes
0answers
99 views

Openstack seems to not map internal IPs to local network properly

I have a very confusing issue which I can't seem to resolve. I followed a guide by Loic Dachary on installing Openstack Folsom on Wheezy, and deployed it on two hosts: a cluster node, and my ...
0
votes
2answers
98 views

NAT Overloading not working, access-list not catching ips?

I have a GNS3 lab set up and I am trying to get NAT overloading working with a dynamic pool. Please see diagram The issue I am having is traffic is being routed correctly from PC1 to the ISP1 or ...
1
vote
1answer
85 views

Forwarding ports from server with 2 internet connections

I have 3 interfaces on my main server, first is used for the local network, second and third are internet connections (each has its own ip routing table): eth0 192.168.0.1 eth1 9.9.9.9 eth2 7.7.7.7 ...
0
votes
0answers
31 views

making a software router for my private network [duplicate]

give me suggestion on this problem. I have 2 nic cards public ip (eth1) and private ip (eth2). now i have a linux system having centos 6.4. I made this system software router so can access internet on ...
2
votes
3answers
830 views

iptables: combine SNAT with network remapping for OpenVPN

[Apologies for the long prelude; question halfway down.] I have a working OpenVPN setup whereby a VPN server pushes a route back to one client (hereafter called the “router”) which can then expose ...
0
votes
1answer
143 views

Windows Server 2012, Hyper-V, how to use 1 IP for all VMs? [closed]

I am running Windows Server 2012 to host several VMs. However, our ISP has only assigned us two IP addresses, one of which is assigned to the host o/s (Windows Server 2012). How can I set this up so ...
1
vote
2answers
199 views

Web server behind NAT, how to listen for public IP address

I have a debian web server (nginx) running behind a firewall using NAT. The web server is hosting several sites that require SSL and their own IP address. I'd like to have the SSL sites listen to only ...
0
votes
1answer
28 views

routing behaviour (PAT/NAT)

|(eth0: 84.23.13.43) +--------------+ | | | NAT router | ...
0
votes
0answers
73 views

Routing static IPs

This is probably a simple question for you experts. I have a BT infinity business broadband account, that offers 5 static IP addresses. I'm trying to expose a server on one of those addresses. This ...
0
votes
1answer
652 views

Is there any way to filter packets (eg. by iptables) after routing is complete?

I want to drop certain packet destined to an ip_address AFTER it has reached the POSTROUTING chain. However, for iptables, the "nat" table cannot be used for filtering so the following doesn't work: ...
1
vote
3answers
653 views

Make CentOS 6.x a port forwarding NAT device

I would like to make CentOS a port forwarding NAT machine using iptables. This is the first time I've tried this and I think i might need a little help. This is the configuration i'm trying to ...
1
vote
0answers
59 views

Linux iptables NAT

So I need to setup a server that servers a NAT server for IPMI network xxx.xxx.xxx.xxx = external IP(internet IP) aaa.aaa.aaa.aaa = internal IP A bbb.bbb.bbb.bbb = internal IP B User 1 -> ...
2
votes
2answers
57 views

Cisco Network Object NAT to get Internet?

So I've inherited a Cisco ASA 5505, and I have no experience whatsoever with the things! There are two Network Interfaces both WAN facing, and the LAN interface of course. Now in NAT rules, there are ...
2
votes
1answer
409 views

How to set mark on packet when forwarding it in nat prerouting table?

I have a few port forward rules like this iptables -t nat -A PREROUTING -p tcp --dport 46000 -j DNAT --to-destination 172.16.8.2:46000 iptables -A FORWARD -p tcp -d 172.16.8.2 --dport 46000 -j ACCEPT ...
0
votes
0answers
106 views

Why NATted packets have different source ip addresses?

I've got ubuntu box with nat. Here is the problem: root@office.redhelper.ru:~# tcpdump -i tap0 host 194.190.8.141 -n tcpdump: verbose output suppressed, use -v or -vv for full protocol decode ...
0
votes
1answer
127 views

Configuring routing for network faults simulator

I'm trying to configure routing on my test machine to pass all traffic via the network errors simulator (WANem). WANem runs in a virtual machine, in the same network with internet gateway. It has NAT ...
0
votes
0answers
56 views

Loosing gateway setting when switching Hyper-V virtual lan to “external”

I have a 2008 R2 server running as a NAT-Router and Hyper-V Host. NIC1 has the default gateway set to NIC2. Using this setup everthing works and all clients can connect to the internet. If I'm ...
0
votes
0answers
57 views

Bandwidth Management & Visibility at Network Border w/ Multiple WAN Links

There is a network that is designed as described below: The ISP supplies a single physical link with 4 VLANs running to us through that link. Each VLAN has a specific purpose, 3 of the VLANs will ...
0
votes
2answers
220 views

DSL routing - NAT Virtual server - port forwarding - static ip address [closed]

My NAT virtual server - port forwarding has been working fine up to the past couple of weeks. All in a sudden, it doesn't work. Setting was done as shown on the link: I'm afraid it no longer ...
1
vote
1answer
191 views

Provide public access to a local web server through VPN

I have a VPN tunnel established between 2 servers: VPS-A and VPS-B having the (fictional) public IP addresses: 66.55.44.33 and 77.88.55.66, and VPN endpoints 10.0.1.1 and 10.0.2.1 respectively. There ...
0
votes
1answer
379 views

How to send HTTP request issued by cURL through VPN?

Please excuse me for (probably) the noob question, but I am very new to Linux networking. I've already spent a few days searching the Internet for an answer to my question, but was unable to find one, ...
0
votes
2answers
360 views

cisco ip nat / port forwarding

I have been trying to get port forwarding working with a newly installed cisco router. I cannot seem to find where my fault is and have been looking for quite a while. The relevant section of my ...
0
votes
2answers
159 views

IP and Port Forwarding on ASA 5505

I have an ASA 5505 with outside network of public ips 95.123.234.64/26 and inside network of private ips 10.22.33.0/24. I would like to redirect any tcp traffic that hits 95.123.234.67:80 to a public ...
1
vote
1answer
194 views

Difference between ip route and NAT?

I'm trying to setup a linux box as router and I'm a little confused on how the following rules will affect the packets. e.g. In routing table I can have default via 10.10.1.1 dev eth0 src ...
4
votes
1answer
153 views

Multi homed firewall with ipnat

i am trying (without success) to configure a ipnat/ipf box under FreeBSD 8.2, here is the scenario: outside inside +----+ ADSL ...
2
votes
2answers
81 views

Special Routing and NAT requirement

I have a rather special routing and NAT issue which I hope I can fix somehow. Inside my company we run a supernet like 192.168.0.0/21 (192.168.0.1 - 192.168.7.254) All computers have this subnet mask, ...
1
vote
0answers
91 views

NAT Public ip to that many number of pvt ip

i have a Linux box with two interfaces one with ip 10.10.18.2 and other with ip 192.168.1.2,192.168.1.3 aliased. A xen host is connected with ip 10.10.18.3 and gateway 10.10.18.2 to this through a ...
-1
votes
1answer
67 views

Two or more services on same port behind NAT [closed]

I think this question is not first but all what I see don't useful for me. Ok, for example I have my network behind NAT where I want setup two http servers on the different hosts. How I can perform ...
0
votes
1answer
282 views

Strange error from apache trying to bind to an unspecified IP

I am getting a strange error message from Apache when I try to start the server . * Restarting web server apache2 apache2: Could not reliably ...
0
votes
1answer
99 views

Apache available on LAN but get timeout over internet

I have a LAN network and a server runs on 192.168.1.90 The apache listen parameter is set to 192.168.1.90:80 I have enabled NAT to forward all http port 80 request from the web to the server at ...
1
vote
2answers
479 views

OpenVPN AS accept connections forwarded by NAT

We're running OpenVPN AS servers which are accessable and working over a public IP. But some of our clients aren't allowed to access our VPN server directly (because of some nasty firewall admin - ...
1
vote
1answer
164 views

Linux ( Fedora 15 ) multiple ISP and NAT routing

So I have my system running Fedora 15 and currently with a DSL line. The line provides a static IP along with static route, DNS. I run a web/E-Mail/DNS server from this IP. It also supports a NAT'd ...
4
votes
1answer
5k views

Mikrotik and NAT/Routing issue

I have basic NAT/Routing problem with Mikrotik RB750 that I've been unable to solve over the past days. From our ISP we have 26 IP addresses: 10.10.10.192/27, with 10.10.10.193 being the gateway and ...
0
votes
1answer
533 views

Routing multiple WAN subnet on a single interface SonicWall NSA 2400

In my current infrastructure I have the following setup : ISP LINK 1 (64.30.24.128/26) ----|X3--sonicwall--X0|----LAN (64.30.24.128/26) X0(LAN) is configured as Mode/IP Assignment: Transparent ...
0
votes
3answers
615 views

Using a nat rule to translate 80/443 traffic to web server, but internal users cannot access it using external ip/domain name

I am using Cisco ASDM for ASA I have my internal network called soa. My outside interface is called outside. Let's say my outside IP given to me by my ISP isp is y.y.y.y I have a web server inside ...
0
votes
1answer
78 views

Blocking ICMP outgoing requests only in eth1

I am creating a NAT with iptables: Computer A: eth0 (dhcp) + eth1 (static ip 192.168.0.1 - gateway) Computer B: eth1 (static ip 192.168.0.2, using Computer A as gateway) I know how to block ICMP ...