how to reach beyond NAT
location: linux.com - date: October 10, 2012
I have two public IP machines(PU-IP1 and PU-IP2). One in home and other in remote location.
The other public IP (PU-IP2) shares Internet to a local area network(3 machines). They are assigned private IP's.
Will it be possible to reach the private address of the machines with public IP (PU-IP1) from home?
All machines are linux ubuntu.
Thanks in advance,
need help setting up networking (NAT) of ubuntu guest under Windows7
location: linuxquestions.com - date: January 25, 2010
Hi - I hope this is an okay question to ask in the newbie forum.
I am running VMware on a Windows 7 host with Ubuntu 9.10 just installed. I've googled around trying to figure out how to set up internet access in the guest via a wireless connection, but haven't been able to find directions or guidance at a level I can understand. I've been focusing my attempts on a NAT connection, since this seems to be referred to as the simplest option.
*VMware version 6.0.4
*I use wireless connections at school and at home (host networking is totally functional)
*I don't have VMware tools installed, because it doesn't install correctly on its own and the guidance I've found suggests I need to download/apt-get some additional patches...which of course I can't do.
*I'm new enough to Ubuntu (previous linux experience in a Cygwin setup) that I don't know how to check network settings from inside the guest.
*I don't know what other information about my system is relevant, but
VMware + Ubuntu Linux NAT will not allow internet access
location: linuxquestions.com - date: December 16, 2012
Hello everyone, just last night I came across a weird problem...
Okay well here is my setup...
I have Windows 7 running as my Host OS. I have Ubuntu Linux running as my Guest OS. Now I have pretty much always used NAT as my network setting for VMWare player, yet last night for no reason my internet just stopped working. I did not alter any host/router files or do any kind of network configurations.
So i figured it was just a problem a simple reboot would fix but when I did reboot my computer and ran vmware player again and started linux with NAT my internet was not working.
Now when I would do a ping for google i would get this kind of reply.
ping: unknown host google.com
Now i have no idea what could have caused this, I swear to you all I did not touch anything!
Okay so let me give you some info...
Help! problem with PPTPD and pptp nat helper
location: linuxquestions.com - date: December 21, 2004
I have problem in having
- kernel 2.4(Fedora Core 1) + ip_nat_pptp (in patch-o-matic 20040406) loaded with
- running pptpd 1.2.1
Server Side Configuration:
-Linux 2.4 Fedora Core 1, patched by pptp-conntrack-nat properly(tested for proper NAT + ConnectionTracking on multiple
-iptables 1.2.11 patched the same as kernel
-ppp 2.4.3 cvs20040527.4
Module Size Used by Not tainted
ip_nat_pptp 3308 0 (unused)
ip_conntrack_pptp 4304 1 [ip_nat_pptp]
ip_conntrack_proto_gre 4852 0 [ip_nat_pptp ip_conntrack_pptp]
ppp_mppe 14040 0 (autoclean)
ppp_async 9888 0 (autoclean)
ppp_generic 27584 0 (autoclean) [ppp_mppe ppp_async]
slhc 6844 0 (autoclean) [ppp_generic]
autofs 13780 0 (autoclean) (unused)
iptable_filter 2412 0 (autocle
[SOLVED] FTP Server behind NAT (IPtables) List FTP directories Problem
location: linuxquestions.com - date: January 23, 2012
the FTP server (10.205.13.97) is behind a firewall (NAT).
I can login to the ftp server without any problems from a remote machine. However, I can't list directories (ls) from remote machine. Even passive mode is timed-out.
230 Anonymous access granted, restrictions apply
Remote system type is UNIX.
Using binary mode to transfer files.
500 Illegal PORT command
ftp: bind: Address already in use
Passive mode on.
227 Entering Passive Mode (50,17,79,90,251,162).
ftp: connect: Connection timed out
I am using Proftpd as the FTP server (Ubuntu).
The IpTables for the firwall box (Ubuntu) was defined as the following (ports 20 & 21 is forwarded):
>echo 1 > /proc/sys/net/ipv4/ip_forward
>iptables -L -t nat
Chain PREROUTING (policy ACCEPT)
target prot opt source destination
DNAT tcp -- anywhere anywhere tcp dpt:ftp to:10.205.13.97:21
DNAT tcp -- anyw
How can I get my external IP address from behind a NAT?
location: linuxquestions.com - date: June 15, 2005
I behind a NAT enabled router and I need to find my external IP address for logging purposes. What I want is a command line tool that looks like this.
Vbox +Ubuntu 9.10 server ver Net problem [Nat+Bridge]|
location: linuxquestions.com - date: December 11, 2010
in "VB host only Ethernet adapeter mode" i am able to communicate with Vbox via WinSCP and browser(ip address)
BUT when i switch to Bridge mode/NAT (pref bridge) in Vbox i am unable to get external internet access [to install app's from internet
Current host config
host subnet 255.255.255.0
Host gateway 192.168.1.1
ip 192.168.1.2(assigned by DHCP)
using Brodband modem 512Kbps
Vbox ubuntu server 9.10 Command mode ONLY
Vbox ubuntu config
current config in Host only mode=communication to host and vice ver sucessfull BUT no external internet
[SOLVED] VirtualBox NAT to access Linux server as guest
- date: September 19, 2011
I asked this question in networking, but it seems more appropriate in this forum.
I have a Linux server with static IP address, and I want to SSH/SMB to it.
In qemu it is easy with "-net user,net=192.168.136.0/24 -redir tcp:22:192.168.136.222:22 -redir tcp:445:192.168.136.222:445"
VirtualBox Host-only adapter also works after setting static IP address to it in the same network. Both SSH and SMB work fine in Windows7 host, but then it may conflict with my network, so I prefer using NAT instead and connect to localhost.
In Windows7 host if I do "VBoxManage.exe modifyvm "my server" --natpf1 "guestssh,tcp,127.0.0.1,2222,192.168.136.222,22", or equivalently use the dialog, then in Cygwin "ssh -v -p 2222 [email protected]
" connects to the port but here is what I get:
X11 forwarding + NAT
location: linuxquestions.com - date: May 25, 2007
I have the following setup - sorry, this needs a bit of explanation because it's not entirely clear in my head yet.
10.1.1.1/shu: hardware router
10.1.1.12/anubis: Ubuntu server, in DMZ - most ports forwarded from shu to it
horus/10.1.1.10, amunra/10.1.1.12, osiris/10.1.1.13: Ubuntu desktops, behind NAT
I have an SSH account on a remote box, which supports X11 forwarding.
How would I go about forwarding remote X11 --> osiris without changing any more port forwards?
Is there some way to go remote --> anubis --> osiris? I'd rather not install X11 on anubis but I will if needed.
Thanks in advance
Simple NAT issues
location: ubuntuforums.com - date: June 7, 2010
I want to do something that should be simple... NAT a certain port to an IP on my network. *rant about how much I've tried, googled and failed*
Our building has assigned us an IP Range (say, 10.0.0.x). They've also provided me with 1 public IP, which they NAT to an IP in that range of my choice (say, 10.0.0.50). I want to NAT port 6500 on that IP, to a different IP's port 80 (10.0.0.51:80) (i.e. come in on 10.0.0.50:6500, forward all the packets to 10.0.0.51:80).
I've reset my firewall in Webmin, so it looks like this :
Packet filtering : Input (Default Drop)
Accept If input interface is not eth1
Accept If protocol is TCP and TCP flags ACK (of ACK) are set
Accept If state of connection is ESTABLISHED
Accept If state of connection is RELATED
Accept If protocol is UDP and destination port is 1024:65535 and source port is 53
Accept If protocol is ICMP and ICMP type is 0
Accept If protocol is ICMP and ICMP type is 3
Accept If protocol is ICMP
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