problem about nat-Collection of common programming errors
chanchal1987
ssh nat vmware-workstation putty
I installed Ubuntu in VMWare Workstation 7. My Host (Windows Vista Home Premium Service Pack 2) and Guest machine is connected using NAT connection. Now I want to connect Guest OS (Ubuntu) with Putty, installed in my Host OS, using SSH connection. What settings I have to do in Ubuntu, Vista and Putty? –Edit– As per sreimer’s instruction I installed openssh-server. Now when I am trying to connect using putty, same error is occured: Putty Fatal Error – Network error :Connection refused
faulty
firewall nat subnet
We recently done a network intra upgrade by adding an additional firewall as the 1st tier firewall, and making the current one 2nd tier. The setup is:WAN <–> 1st Tier Firewall <–> Intermediate LAN <–> 2nd Tier Firewall <–> Internal LANThere’s other network such as DMZ, Wifi guest and so on which is not shown above. The intermediate LAN is only a single connection between the 2 firewall, no server or workstation connected to it. The IP for the above network is:Intermediate LAN : 1
Ian Boyd
nat ipv6 teredo
i’m trying to get Teredo to function on my machine.Most routers, it seems, refuse to forward packets from any host other than the one i specifically connected to first. Teredo requires full Cone NAT in order to function.Does any router, hardware or software, allow full cone NAT? Is this an oversight by the designers of Teredo that nobody, in practice, can use it?i’ve triedm0n0wall pfsense D-Link Linksys SMC
EzioF
iptables ip nat port-forwarding route
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 the servers, the problem results from a decision by the kernel to forward an Ethernet frame containing the packet reply in the direction of a MAC address that doesn’t know how to route the packet.So, for example, my network cards are:eth0 Link encap:Ethernet HWaddr 00:0E:0C:6D:51:8B inet addr:2
MasterRoot24
ubuntu cisco nat pptp
I’m trying to connect to a PPTP server which is sat behind a Cisco 881 NAT router. The server is running Ubuntu Server 12.04 and is running Poptop pptpd as the PPTP daemon listening for connections.As discussed in my other question, I’m trying to setup a Cisco 881 router to replace my old Linksys WAG320N. This same server and WAN connection worked fine with the WAG320N with no special configuration, other than allowing 1723 in through the firewall.On the Cisco 881, I’m using the newer ip nat ena
William Reis Fernandes
firewall router nat adsl
I have a problem when I’m doing an access using my DNS hosted at another server, which performs a redirect to my internal network.example:User attempting access to internal DNS: intranet.site.com: 8090 (182.12.1.1:8090> 192.168.1.151:80)My router does not allow access.I’ve tried unsuccessfully NAT ….With iptables but I’ve got here in the company is directly ADSL Router bad!
Bryan
dns bind nat port-forwarding ubuntu-12.04
I’ve got a Bind 9 DNS server sitting behind a NAT firewall, assume the Internet facing IP is 1.2.3.4There are no restrictions on outgoing traffic, and port 53 (TCP/UDP) is forwarded from 1.2.3.4 to the internal DNS server (10.0.0.1). There are no IP Tables rules on either the VPS or the internal Bind 9 server.From a remote Linux VPS located elsewhere on the internet, nslookup works fine# nslookup foo.example.com 1.2.3.4 Server: 1.2.3.4 Address: 1.2.3.4#53Name: foo.example.com Addresss:
John Smith
linux ubuntu-10.04 nat port-forwarding linux-networking
I’m migrating servers, and I’d like to forward port 80 on my existing machine to port 80 on the new machine while DNS switches over.I’m running Ubuntu 10.04 server and trying to follow the guide at http://www.simplehelp.net/2009/04/15/how-to-redirect-traffic-to-another-machine-in-linux/I’ve run# echo 1 >/proc/sys/net/ipv4/ip_forwardBut when I run the next command I get an error:#iptables -t nat -D PREROUTING -p tcp –dport 80 -j DNAT –to-destination 122.164.34.240 iptables: No chain/target/m
Richard T
iptables nat gateway masquerade fedoracore
Following a gateway / firewall system’s hardware failure, a younger version of Fedora Core (17) was installed on new hardware, and the old ‘iptables’ and system-config-firewall files from /etc/sysconfig were used (and nothing else). Old version of FC is unknown but it was probably 14 or 15, old disk is no longer readable. (I’ve put the former iptables file contents below.)This systems’ job is EXCLUSIVELY to:Accept port 22 (ssh) from any network source for local delivery (sshd). Forward port 222
Thufir
networking java port-forwarding nat vuze
Vuze gives an error that “0 users” are connected, and a firewall error. I don’t think it’s the network, because the same network was working fine just a few hours ago.Vuze was working perfectly up to earlier today. I had been running 12.04 LTS, but did a clean install and put on 13.10 desktop. Now, vuze just doesn’t connect.The specific diagnostic error:Testing port 24488 … NAT Error – Connect attempt to96.55.205.166:24488 (your computer) timed out after 20 seconds. This means your port is
k06a
sockets tcp capture nat tcp-ip
I would like to make my own user-mode NAT application.I have the folowing scheme:VM2[192.168.8.2] —— [192.168.8.1]Win2003[192.168.9.1] —— [192.168.9.2]VM1VM3[192.168.8.3] _/VM4[192.168.8.4] _/I’m capturing RAW IP packets on 8.1 and 9.1 interfaces. Some packets from 8.1 are transfered to 9.1 interface this way: 8.2->9.2 replaced by 9.1->9.2 Some packets from 9.1 are transfered to 8.1 interface this way: 9.2->9.1 replaced by 9.2->8.2My application does not bind any ports at all – it is onl
akira
crash nat p2p
So..i had this argument with my networks teacher. He said that some people complains about router crashes due to many entrys on NAT tables on a router.I didnt understand and i asked: “If the application uses the same port, why does the router crash?. It should have only one entry (pc-ip,pcport;public-ip,public-port)”. And he said: “it doesnt matter its using the same port”.I got the idea that NAT creates an entry for every packet that passes trought it. Iam assuming NAT with overloading as you m
WGH
iptables nat tcp timeout idle
I have a TCP connection that can be idle for many hours. The traffic is flowing from the server to the client only. One might say it’s kind of push notification.My home router, however, tends to drop the connection silently after 20 minutes (the value of /proc/sys/net/netfilter/nf_conntrack_tcp_timeout_established). The server detects the loss once it tries to send anything (I assume it receives RST from the router itself). As client never sends anything, it never detects the loss.RFC 5382 “NAT
Nicolas GUILLAUME
linux nat vmware-workstation
I’m trying to expose on my local network a very simple Ruby server running on Linux.server = TCPServer.new(hostname, port)My Linux VM runs on a NAT virtual network 192.168.73.X. The port I use is 1564 so I forwarded it using the “Virtual Network Editor” in VMware.Then I use the 192.168.73.133 as the hostname in my ruby code.This works great and if I try to connect to my server from the host machine (including with the IP of my host machine 192.168.1.118.The problem is that I can’t access it from
Siddhant
linux networking debian nat linux-networking
I’m having a strange problem with a server I have sitting at my workplace (it’s behind a NAT, if that’s important). The issue is that at some times, it becomes unreachable and then comes back up again, usually within a few seconds, sometimes lasting up to 1 minute. It doesn’t reboot, it doesn’t crash. It simply becomes inaccessible. During this time, I cannot ssh into it, nor can I access any applications running on the machine (it’s running a couple of Rails apps, so they become unreachable as
MasterRoot24
cisco nat asterisk sip
I’ve recently moved to a Cisco 881 router for my WAN link. I was previously using a Cisco Linksys WAG320N as my modem/router/WiFi AP/NAT firewall. The WAG320N is now running in bridged mode, so it’s simply acting as a modem with one of it’s LAN ports connected to FE4 WAN on my Cisco 881.The Cisco 881 get’s a DHCP provided IP from my ISP. My LAN is part of default Vlan 1 (192.168.1.0/24). General internet connectivity is working great, I’ve managed to setup static NAT rules for my HTTP/HTTPS/SMTP
jetboy
iptables nat port-forwarding drac idrac
I have two Dell Poweredge R210 servers, both running Ubuntu 10 Server x64.Server A has a Dell iDRAC6 Enterprise ILO card (on 172.16.96.91), and both the server and the DRAC use Server B as a gateway (with server B’s WAN IP being xxx.xxx.xxx.xx). Server B uses the following NAT rules in IPTables to route traffic through to Server A’s DRAC:*NAT–append PREROUTING –in-interface eth1 –protocol tcp –destination xxx.xxx.xxx.xx –destination-port 8019 –jump DNAT –to-destination 172.16.96.91:443–a
Mike Janson
linux centos iptables nat pptp
root@pptp [~]# iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE iptables: Unknown error 18446744073709551615This is an openVZ box. Is there a way to bypass that?This is the MASQUERADE that is giving problems I am assuming. new to iptables so is there a way to do this differentlyfollowing this guide: http://blog.secaserver.com/2011/10/install-vpn-pptp-server-centos-6/
Alies Belik
jmeter nat
I was trying to setup remote jmeter server and jmeter client.Server public IP : 111.111.111.111 Client public IP : 222.222.222.222I am able to start jmeter server which is on rackspace cloud.My desktop is behind a firewall with a NAT public IP address. I opened the port 1099 on firewall and added a public IP for the desktop. Also added remote address on jmeter.properties on desktop and started jmeter GUI client.when i hit remote start from client i am able to see the request reached to jmeter se
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