Networking :: Remote Access To LAN When Public IP Is Dynamic?
Feb 4, 2010
Is it possible to provide remote Windows users access to a LAN via the Internet when the LAN itself is connected to the Internet via a SOHO router that is assigned an IP address dynamically? An LQ thread from 2004 includes a suggestion to use VPN and DynDNS.com. Is that still a good solution? Are there any security issues?
Assuming:VPN is a good choice. DynDNS.com or similar can be used to give remote clients the public IP address of the SOHO router. the SOHO router is configured to forward VPN traffic to a Linux system acting as the VPN gateway. then, for a LAN of ~20 IP nodes and less than 5 simultaneous remote clients, are there any other VPN server software solutions to consider other than OpenVPN, Openswan and strongswan?
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Jun 28, 2011
I am looking for a way to be able to access my PC from a remote place. The problem is that I have a dynamic IP. I have registered at dyndns and have found settings in the router to 'Activate Dynamic DNS' and then you supply your dyndns address, password and tell it to update the WAN ip address automatically. This works, however only internally and only to the router as opposed to my PC I am not interestes in accessing the router to configure that remotely, only accessing my own PC.
Is this something I can accomplish with:
A ZyXEL P-660R-D1 router
A dynamic WAN IP address
A PC connected to the router
A static IP address for my PC
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Oct 13, 2010
How I can benefit from a public external IP? Do I need a public IP to access my computer from a remote site?run a tftp server ?
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Nov 30, 2010
I'm having two problems with remote syslogging with this configuration in syslog.conf:
*.info;authpriv.*;cron.* @myhost.dnsalias.com
As you can see the logging is made to an host with dynamic ip, and as soon as the ip changes the logging seems to stop.
Another thing is that it only seems to log the first part (*.info), the other ones don't appear.
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Aug 2, 2011
I'm trying to write a p2p file sharing program using python's built-in libraries. Everything is going well. The only thing is that i'd like to be able to use openssl public and private keys so only a host with the public key could access/decrypt the filesharing. I've gotten these libraries (httplib, basehttpserver, ssl, os) to work using just a pem file containing both the public and private keys but no success with them seperately. Can someone point me in the right direction or offer an alternative? PS, the goal of the project is to create an anonymous, decentralized, secure file sharing program. I want to be able to upload this to sourceforge so everyone can use it, if that's any incentive
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Jan 27, 2010
Is there any one know how to deploy a remote OS installation for a host with public network address? In a LAN with private network, we can use PXE, kickstart... but what we could do with the hosts have only public ip address?
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Jan 22, 2011
does somebody know how dnsmasq / iptables need to be configured such that requests to my public IP from lan are correctly NAT'ed to the host that handles them? Currently my routing device treats them like "oh, these are anyway for me, gnam gnam" which actually doesn't work.Unfortunatly setting up NAT rules that redirect requests from my lan correctly as they are redirected from wan is an option I would like to use only if there is no other possibility.I would like some kind of solution that treats packets that are sent to my public IP as normal packets that are not looped back before they even get out. So they would need to be at least sent to the wan gateway where they are directed back where my firewall can successfully treat them like all other public requests.
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Aug 5, 2009
I have two nagging problems on one network which I do not have on another elsewhere, both using uptodate Debian servers. The server is on the private subnet behind a router/adsl modem. The symptoms of the one which does not work
1) Users cannot access their web site from lan. If they try, they get to the router web interface, same as if they entered http:10.0.0.138 which is the router's lan address.
2) Users cannot access smtp or pop3 service using the domain name, they can access it only using the servers LAN address.
I fear that I might have not set up the router properly because appart from that the two servers are almost identical but I do not know where I might have made an error.
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May 13, 2010
I could no handle/circumvent on the past week, despite of the several "googling" and documents reading. I will try to mention all needed bits... I'm managing a network with the following structure:
eth0: internal net
eth1: DMZ
eth2: 10 mbit/sec sync line with eight public /29 IP's + a /30 interconnection network. All public IP's must use the interconnection's network gateway.
eth3: ADSL with ppoe with fixed IP (ppp0).
Now, a few extra info:
- All internal traffic is routed through ppp0 except when it's destined for DMZ and public IP's range.
- DMZ traffic is routed either through ppp0 or eth2. This is done by source IP.
- eth2 has on IP from the interconnection network, and six public IP's are also defined on eth2. Command: "ip addr add ...."
[code].....
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Oct 28, 2010
host is windows 2003 server 64-bit
guest is ubuntu 9.04 server 64bit
Qemu : 0.11.1
Qemu manager: 7.0
from Qemu manager, if network card is using User Networking, it's a NAT and I can see that Guest Ubuntu has an ip address 10.0.2.15 and is able to access the internet. However, as Guest ubuntu is running server so I want to do use Tap networking and I assue with Tap, the Guest ubuntu will get an ip address which is in the same subnet as host machine by dhcp. so from Qemu Manager 7.0, I changed Network card to be:
NE2000PCI
Vlan Number =0
VLAN Type: Tap Networking
Mac address: tap0's mac address from host
TAP Network Adpator: Tap0
Note that tap0 was created by openvpn. and then fired Ubuntu guest, ifconfig shows no ip address on eth0 (which has the same mac address as Tap0) so the guest Ubuntu has no ip address and can't access public.
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Jun 15, 2011
i need to create a SSH server in my home and i should able to log in my SSH server over the internet from out site. what are the setup i have to do?
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May 13, 2009
the only error message I can find comes from "dmesg|tail"all it shows is
"no IPv6 router"any body know what is going on here or where where to look for more clues the next time I get around public wifi Oh the windoze washers and apple polishers don't seem to have any problems at all
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Jun 12, 2009
My company blocked port 22/23 for telnet and SSH which would have been quite nice to access my box at home.I found a page on the net (URL...) which works perfectly fine, but due a demo version stops after 20 seconds.Does anybody know a similar page or any other way I could remote access my PC?
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Feb 23, 2011
my g/f was able to access her jobs computers from home in Windows. she'd go start->program->access->connect to remote desktop... (or something like that) in any event, i've found some programs in Fedora 14 that say they'd do the same, however i can't get it to work. in "remote desktop viewer" i'm trying to use 'VNC' protocol,and trying to put the ip in the first of the "Host" lines.
now, there might be another issue, is it possible she need more info than the ones she got in order to use LINUX remote desktop? she has (what she has written down as) Computer # 111.111.111.11 and then ';' and 4 additional numbers, so (for the sake of the example) computer#: 111.111.111.11;2222 she has a 'username' and a 'password'.
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Jul 16, 2010
New Fedora 13 Install. I have Remote Desktop Enabled. I can access the machine from itself but not others on the network. I stopped the firewall, that did not work. I looked in hosts.allow and hosts.deny, no entries there. The vino server is running. There is nothing in /varlog/messages, dmesg or /var/log/secure, at least nothing I could find related to vino. What else can I check? The conf file in my home folder looks exactly like one on another machine where it is working. forgot to add the message I get when I try it from a remote machine is "The connection to host 192.168.1.100 was closed". So it appears something is actively rejecting the login.
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Jan 10, 2011
We have a fedora 10 server that the company connects to with other computers in the office. The file everyone access, public_share has no restrictions to the people that use it. We have another file, art_share that is password protected and everytime someone wants to access it they must login with it, but there are only 3 people out of the 15 that need to access it. Everyone needs to access public_share at some time.
My question is: is there a way to limit the permission for certain remote users to public_share so that they cannot write or execute, but at the same time allowing others full permission? I tried to do use chmod, but then it changes everyone's permission (I assume because of the remote access).
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Sep 7, 2010
I have installed Ubuntu Server (lamp+openssh) on a laptop in order to use it as a testing web server for my projects. After configuring it I've also installed the GUI to make things easier as I'm not very proficient using just the command line.
I'm using the wireless connection on the laptop to communicate with the router and my main desktop (Windows). I've assigned it a static local IP (192.168.1.99) in order to be able to access the sites on my web server from my desktop, and everything works fine.
Now comes my problem: I need to be able to access those local sites from a remote location (outside of my local network) as well. How can I do that?
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Mar 13, 2011
I just set up Remmina the other day to be able to access my desktop remotely. However, I can only do this when I am connected to my home network. Is there a way to set up Remmina so that I can connect to my desktop remotely from outside my home network?
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Mar 29, 2011
We have installed Ubuntu Server 10.04 LTS for file share (Samba) at our local network.
I want to access my local server (Local IP 192.168.1.200) via internet from remote location. I have already installed SSH on our ubuntu server. I understands that using "Putty" we can access our server. Furhter, our Internet IP is dynamic (which is not an issue for us).
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Feb 7, 2010
They are running Kubuntu. How to access their desktop from my home or office using Internet. Logically I remembered about kfrb and X11-vnc. But both of them need some approach to provide security. I'd like if someone could give me some pieces of advice on choosing the simplest and better approach:
To secure kfrb or x11-vnc is simpler or better to mount a vpn or to use an ssh tunnel? Is there any other solution? My pearents ISP use DHCP, so I think it would require some service like dyndns or similar...
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Feb 17, 2010
I have 4 boxes on a local network: 2 with XP only, 1 with Ubuntu 9.10 only, and 1 with both. All boxes can share folders, set up with share-admin instead of using Nautilus right-click properties for each folder. I can see and control the remote desktops on all boxes, to all other boxes, from all other boxes,with one exception: I can only access the XP desktop on the dual boot box, not the Ubuntu desktop. When I try I get: "Connection to host 192.168.1.102 was closed." I am refused access to the Ubuntu desktop in this manner from both the other Ubuntu machine, and from both XP machines.
My setups are basically plain vanilla with routine installs of Ubuntu 9.10. On the XP machines I am using TightVNC on the XP machines to view both other XP desktops, and the Ubuntu desktop that is accessible. On both Ubuntu setups I am using (I suppose) vino and vinagre, and have completely re-installed what I think is the relevant software. There is no firewall running on the Ubuntu dual boot, when I check ufw. For reasons I cannot determine the inaccessible Ubuntu desktop is not providing its own address but instead in the Remote Desktop config dialogue it identifies itself as 27.0.0.1 which I think is the loopback id. I know so little about this sort of networking that I am not giving all relevant info, but I still thought I'd try.
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Sep 1, 2010
When I try to access a network connected folder bying on etwork->ComputerName->FolderName, I almost always get this message:Unable to mount locationDBus error org.freedesktop.DBus.Error.NoReply: Message did not receive a reply (timeout by message bus)If I click OK and try again a few times, sometimes it will connect and everything is fine after that. If not, I can issue a mount command in the terminal and access the /mnt folder that way with no problems, but clicking Network, I still get the timeout command.
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Sep 22, 2010
I need to access a windows share at my university's server. When I am at the university, I can access the share by nautilus (or dolphin) in a similar way to ftp:
smb://domain%5Cusername@server/share
The thing is that when I try the above anywhere else except the university, it does not connect. I guess it has something to do with the domain, but I am not sure.
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Oct 15, 2010
Coming to the point, as per object, I'm playing ( read also as "messing up" ) with mldonkey since last weeks and I have managed to get it working correctly on my home network ( behind router and firewall ). Next step in my development plan was to enable remote access to mldonkey web interface from any external network, like for example a friend pc. I'm aware of the "IP Access Restriction" in the mldonkey configuration file (downloads.ini) but there I can only specify an ip ( or ip-range) to allow access.
So the question is: how can I manage to disable* ip restrictions upon access, so that with a DNS-aliasing service I can access mldonkey web page virtually from anywhere?
(*) = maybe this is not the correct word but it explains the concept.
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Feb 8, 2011
I have 2 ubuntu PCs, which are connected to the internet without an external IP (behind NAT). How can I access one from another?
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Jul 8, 2011
I have just installed Ubuntu 11.04 and the Cisco VPN client with :
apt-get install network-manager-vpnc
I have imported the PCF provided by my employer into the GUI. The group password also seems ok, when I login to the VPN server, I am provided with the "VPN Login message". (On Windoze, I get an Ok/Cancel popup with the same message). In Ubuntu, I don't get to click "Ok" but it looks like I'm connected properly. The /var/log/syslog file contains numerous static routes added, 30 or so. After the Login Message, I see the couple of line:
Jul 8 12:40:51 ubuntu02 vpnc[1613]: can't open pidfile /var/run/vpnc/pid for writing
Jul 8 12:40:52 ubuntu02 NetworkManager[630]: <info> VPN connection 'VPN to my network' (IP Config Get) complete.
I get an IP from the external network correctly as well:
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:172.16.10.170 P-t-P:172.16.10.170 Mask:255.255.255.0
However, I cannot ping any of the machine on the remote network. None of the network services seems to be accessible. Why the machines on the VPN are not accessible?
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Jul 29, 2011
i am running 11.04 for my laptop(64bit)(inb4 use 10.10 if your a newb).anyways I got Fallout New Vegas for my home computer(not laptop)(windows 7 32-bit) and I am enjoying the except we have the worst mouse/keyboard setup ever. So I am interested in Remote accessing my windows computer from my laptop and game Fallout on that(is that even possible) also, I really do not want anything to do with WINE so putting it on my ubuntu is not desired.I have basic knowledge of windows and even more basic of linux knowledge.So I can open the window for remote access.I even have the IP of my other computer.. It even recognizes the domain but pops up with this window when I try to click it.
Quote:
Browsing for service type _ssh._tcp in domain domain.actdsltmp failed: Timeout reached
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Dec 16, 2010
i want to open a cmd.exe of a remote machine in my own machine.. i am using c language. its just for educational purpose.
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Jun 17, 2009
I want to access RHEL5 by remote desktop from windows XP.
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Jul 13, 2009
Can any outsider(from Public N/w) access my pvt. network.i.e. my clients of my subnet? If yes how ??and if no why?
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