0
votes
0answers
20 views

Cisco ASA 8.2, accessing an internal webserver with an external IP-address together with port translation

We have one web server, let's call it SERVER01. It is running two different web servers that both uses HTTPS, INTERNALAPP on port 443 and EXTERNALAPP on port 444. In a previous setup we had an old ...
0
votes
1answer
57 views

Port Forwarding on Cisco Router

I'm a Cisco newbie, have the 1841, with two ethernet interfaces: interface FastEthernet0/0: Internal Desired destination IP: 186.67.181.140 interface FastEthernet0/1: External World IP ...
0
votes
0answers
33 views

Listening “through” GRE Tunnel

Currently I'm looking to learn about using GRE Tunnels and I have the following scheme: Server1 (200.1.2.3) ----> Server2 (190.1.2.3) Both servers have public IPs Then I've setup a GRE Tunnel with ...
0
votes
1answer
71 views

Cisco 887VA Port Forwarding Not Working

I have a Cisco 887VA connected to our BT Business Broadband line. We also have another modem on a seperate connection which also handles our DHCP. The Cisco is plugged into our network switch, as is ...
1
vote
0answers
33 views

Setting up a web server behind a ZTE NAT [closed]

down vote favorite I have developed a web app in Java using netbeans and running on a glassfish server attached to netbeans. I would like to show this to some people but I can't get it running across ...
1
vote
0answers
34 views

Weird socket behavior in VirtualBox (NAT + PAT)?

I have a Linux VM with NAT and PAT configured. Let's say ports 2000 and 2001 are forwarded to the VM. These ports are also configured for external access on a device such as a router using a domain ...
0
votes
2answers
90 views

Portforwarding with IPTABLES and Remote IP detection

I was able to forward 80 port from my primary server 192.168.90.1 to the second one 192.168.90.2 with IPTABLES The primary server has a public address X.X.X.X so I forwarded X.X.X.X:80 -> ...
1
vote
1answer
148 views

iptables DNAT port forward to another machine on LAN

I am trying to implement iptables forwarding rules in order to internally redirect packets coming through a specific port. My machine is running under the distribution Ubuntu Server 12.04.3, with UFW ...
0
votes
2answers
30 views

IIS and Apache hosting together

I know similar questions have been asked already, but mines a little more unique. I work for an internet/networking company. We build and host websites, as well as provide internet and network setups ...
0
votes
0answers
78 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
1answer
398 views

iptables port forwarding to vmware workstation guests on NAT vmnet [closed]

Try as I might, I can't get this to work now for 2 days. Your move, internet. I want iptables to transparently forward (localhost) 192.168.1.40:2222 to 192.168.2.22:22 and I don't want ...
-2
votes
1answer
197 views

Ubuntu Server / IpTables / Port Forwarding / NAT

I got referred here from StackOverflow. I'm using IpTables to forward an incoming port on one server to an external server (not on LAN) and the same port. The problem I'm having is that I have to use ...
0
votes
0answers
95 views

Why is an ack response being sent to the wrong gateway?

I was trying to determine why a packet forwarded by iptables to my internal lan is returned on the wrong gateway. Having investigated this further, I determined that, at least in the case of one of ...
0
votes
1answer
742 views

iptables forward rule not working in openwrt

I am trying to apply some iptables forwarding rules in openwrt. Here is my scenario - My server has two cards ath0 and br-lan. br-lan is connected to internet and ath0 to private network. The other ...
0
votes
1answer
48 views

Port forwarding to the local network machines for local network users

All machines in my network based on linux. Main server has 192.168.0.1, mail server has 192.168.0.2, client machine has 192.168.0.3 ip. I've added iptables -t nat -A PREROUTING -d 192.168.0.1 -p tcp ...
-1
votes
2answers
207 views

Remote Management (VNC-style) without Port Forwarding [closed]

Is there a way of setting up a VNC-style server (RDP would do as well) on machines behind NATs, and have access to them? Should be technically possible by having outgoing connections from the NATed ...
0
votes
0answers
142 views

SQL Server 2005 Express behind linux gateway with iptables

We want to access an SQL Server instance which runs on 10.12.1.2:1433 through a linux gateway machine. The gateway n205 has 2 interfaces eth0 with IP 192.168.1.205 and eth1 with IP 10.12.1.1 The ...
0
votes
3answers
800 views

Forward traffic to local LAN IP while keeping the originator IP

I am trying to forward traffic from one server to another, while keeping the origin requestor IP. Therefor I cannot use SNAT or MASQUERADE. SERVER A: Public IP: 111.111.111.111 Private IP: 10.0.0.1 ...
0
votes
2answers
675 views

Cisco ASA-5505 Port Forwarding

I have a Cisco ASA-5505 firewall, which is currently configured to share our internet connection and do NAT for my LAN, as well as forward port 443 to an internal machine. I need to forward port 2222 ...
1
vote
1answer
666 views

ASA 5510 8.4 Nat & Portforwarding

So I'm trying to forward an internal service on a internal server to the external interface on the same port on the outside interface of our ASA. I been searching for a solution for days and found ...
2
votes
1answer
769 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 ...
4
votes
2answers
896 views

NAT routing and port forwarding on Cisco ASA 5505

I have inherited my first Cisco router and am having trouble understanding how to do NAT port forwarding correctly. ASA: 8.0.2 ASDM: 6.1(1) I have a single external ip address on the outside (via ...
1
vote
1answer
310 views

Can you configure SNAT with multiple source IP's and use static DNAT (port forwarding)?

We have a private LAN connected to a firewall with multiple public IP's to use for SNAT in order not to overload the ports on a single IP. However, we have a requirement to allow certain workstations ...
1
vote
0answers
363 views

Puppet agent (v3.0.1) hangs connecting to master (v3.1.1) in VM behind firewall (with NAT based access) - SOLVED

I am using puppet agent v3.0.1 (On FreeBSD), trying to connect to a puppet master v3.1.1 (On Ubuntu) and the puppet agent hangs with the following debug output: puppet agent --debug --no-daemonize ...
0
votes
0answers
111 views

set DMZ server on modem that not support DMZ, using port forwarding

I have to see an application server from outside of my network, but the modem that I am using is a Zyxel P-660-HN-T1H that not supports DMZ server configuration.So, which port(s) I should forward to ...
0
votes
2answers
290 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 ...
0
votes
2answers
614 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
1answer
378 views

NAT / Port Forwarding with iptables firewall [duplicate]

I've got the following setup: firewall (iptables) eth0 internal interface, 192.168.2.10 ppp0 external interface, public_ip (IP masquerading) server1 (192.168.2.11), service 1 (port 443) server2 ...
0
votes
3answers
191 views

IOS Nated port forwarding

I have cisco ios router with ios C1900 Software (C1900-UNIVERSALK9-M), Version 15.2(4)M1. And I have setup Nat with port overload (one public IP). And there is a static mapping: ip nat source static ...
0
votes
1answer
375 views

Port forward (NAT) based on domain/URL

I currently have my Time Capsule to forward all inbound requests on port 80 to my Mac Mini which runs a web server with its local ip address of 192.168.1.8. I also have DNS set up so that if I go to ...
0
votes
1answer
517 views

Port forwarding behaves differently from virtual server in D-Link router?

There are two pages in D-Link router to setup access to internal network from outside: Port Forwarding and Virtual Server. Both allows to map external port to internal one, except latter page also ...
0
votes
1answer
747 views

Simple iptables port forwarding with masquerading not working

I'm trying to set up a simple VPN server on EC2 (Ubuntu 12.04) with the Android example ToyVpnServer. Its instructions: // There are several ways to play with this program. Here we just give an // ...
-1
votes
1answer
69 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 ...
1
vote
0answers
152 views

Cloudmin GPL Xen PV with Nat Port Forwarding

I'm running Cloudmin GPL on CentOS 5 64bit and am trying to allow my Xen PV guest to access the internet via a NAT/port forwarding setup.. I've done the following: (on dom0) echo "1" > ...
1
vote
0answers
261 views

NAT loopback/reflection on Zyxel P-661HW-D1 doesn't work

I have a Zyxel P-661HW-D1 modem/router with several port forwards that works on the WAN interface. I'd like to make them work for the LAN interface as well, like I'm used to. I updated the firmware to ...
0
votes
1answer
52 views

iptable nat forwarding

I am having three linux PCs ( A B and C )in a LAN . I want to keep A as a client and send request to B . B in turn should forward the request to C and C should return back to B and finally B to A . ...
1
vote
0answers
101 views

Changing externally visible IP on a multi-IP router?

I work at a public library and I'm trying to configure OCLC's EzProxy software. I've run into a problem and I think it's related to our network config. I'm punching above my weight here a little so ...
0
votes
3answers
736 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 ...
2
votes
2answers
7k views

iptables: How to forward packets with destination port 80 from eth0 to eth1?

I've http and https traffic coming from several machines to my eth0 on my Linux machine, but I want to forward these traffic to eth1 which has the access to the internet. And do the complimentary ...
0
votes
2answers
109 views

NAT to a fixed IP via load balancer? [duplicate]

Possible Duplicate: Network Redundancy Example I got a network configuration as shown in the diagram. Thing is I want do some settings so that the public can access to the server from ...
3
votes
1answer
3k views

DNS Server Behind NAT

I've got a Bind 9 DNS server sitting behind a NAT firewall, assume the Internet facing IP is 1.2.3.4 There are no restrictions on outgoing traffic, and port 53 (TCP/UDP) is forwarded from 1.2.3.4 to ...
0
votes
1answer
409 views

Make virtualBox webserver public

I'm new to virtualBox so please bear with me. I have a win 7 Ultimate N host (my physical machine) I have a virtual machine with win 2008 server running sharepoint which I want to access from public ...
0
votes
1answer
391 views

Port forwarding not working despite DMZ and bridged modem

So I'm trying to set up SSH access to a friend's server, and we've learned from his ISP (SureWest) that their modem is bridged. Next, the router (Linksys E2000) was set up for port forwarding. No ...
0
votes
2answers
524 views

SSH not working through Double NAT

I am trying to setup port forwarding for ssh through 2 NATs The first Router translates my internet IP to my outer network (10.1.7.0). In the outer network there's a second Router that does NAT to my ...
0
votes
1answer
232 views

NAT ing to port 80 not working,when request comes to itself

We have a machine with Virtual Machine with local IP NAT ed to Public IPs. When a request comes to public IP on port 80 it will be redirected to VM with local IP. This is the iptable rule we are ...
2
votes
2answers
368 views

Forwarding MySQL connection with iptables and differents network interfaces

I have a PC with Ubuntu as a router. It has a 3G connection with a public IP to the Internet, and there is a private wireless subnet. So it has two active interfaces: ppp0: public IP (WAN) wlan0: ...
-1
votes
1answer
795 views

How to access server using public ip when in the network itself? [duplicate]

I've asked this question and even searched around but didn't get a useful answer for me. Basically what im doing is i have a webserver on internal ip 192.168.0.100 port 80. So if im in the network it ...
8
votes
1answer
3k views

iptables: Port forwarding with masquerading is not working

I'm having some issues with my port forwards. NAT seems to work ok and one out of the port forwards seem to work (udp port 7887 to machine 192.168.1.100). But not the others. I doubt that it matters, ...
2
votes
2answers
886 views

Iptables: Forwarding packets doesn't work

I have 3 Linux Systems A, B and C. A is a TCP Client and sends a message to TCP Server on C. A can see only the external IP of B which is at wlan0 interface, 192.168.0.3 ------------------ ...
-2
votes
2answers
212 views

How to write the server to work behind NAT without any router configuration

I have two machines A and B: A: Client (behind NAT) B: Server (behind NAT) I want 'B' to be able to listen on port 8080 for example, so that 'A' can send packets to 'B' through that specific ...