Ubuntu Networking :: Setup Ssh With Dynamic DNS - But Can't Seem To Get It To Work
May 19, 2010
I've read some guides on how to setup ssh with dynamic DNS, but can't seem to get it to work. My Linksys router is currently set to forward port 22, so I don't know why SSH still gives:
ssh admin@xxx.hopto.org ssh: connect to host xxx.hopto.org port 22: Connection refused In particular, I also have openssh-server running on the target machine. Given that I have port forwarding enabled, why would this be happening? If I try to login directly to the IP, I get the same refusal.
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Mar 21, 2010
I have setup like instructed in online tutorials.
Here is a copy of my interfaces file:
Code:
Code:
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Aug 24, 2011
im having some trouble with my ddclient configuration. i followed the guide from [URL] and everything seems to be in order however it doesnt work. ive been emailing support at [URL] however they have yet to offer me a viable solution. perhaps someone here may know what my problem is. below is the results of the command: sudo ddclient -daemon=0 -debug -verbose -noquiet below that is my .conf
[Code]....
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Dec 12, 2009
I want to restrict the Visitors to my Webserver whom i want to give access But the persons whom i want to give access. have Dynamic IP. I want to use DynDNS and update IP address of person. Based on the Hostname Pointing to Dynamic address of person.
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Sep 30, 2010
i want to set up an email server both to receive and send emails. I also am on a dynamic ip scheme with my ISP. I do have a dynamic dns account with no-ip.org the Questions are:
-will somebody be able to send emails to me at the <user>@<dyndns_name>.no-ip.org email address?
-will I be able to send emails from the <user>@<dyndns_name>.no-ip.org email address?
I know i'll be able to login to accounts like gmail and yahoo and download emails from there.. but even that i don't know - even macroscopically how its done:
-is it the sendmail deamon that accepts the mail from <me>@gmail.com, <me>@yahoo.com, <me>@<dyndns_name>.no-ip.org?
-is it the sendmail deamon that does the sending of email (as well)?
-can it push emails that I want to send as <me>@gmail.com to the gmail smtp servers (and they in turn will push my email even further)?
-can it push emails from <me>@<dyndns_name>.no-ip.org to receipients?
and finally,
-WILL receiving pop/imap servers allow incoming email from my server? or due to the dynamic ip they'll assume I'm a spam server?
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Mar 29, 2009
I've a desktop running Fedora 10 connected to the Internet via LAN. There's 3 network controllers in the desktop. One integrated to the motherboard and two additional. I would like to connect other computers (two laptops, one running fc9 and the other Window$ XP) to the Internet via the desktop. I googled the question and found out that I need to adjust thing called 'NAT'.
For that purpose I did the following:
iptables -t nat -A POSTROUTING -s 192.168.2.0/24 -j SNAT --to-source 192.168.*.*
where 192.168.*.* - is desktop' IP address. I want to use 192.168.2.0/24 as a network for laptops. I activated one of devices (eth1), gave it IP address:
ifconfig eth1 192.168.2.0/24
and connected f9 laptop to it.
On the laptop I activated eth0 with the same IP. The problem is: it doesn't work. I can't ping anything from the laptop except its own address (192.168.2.0).
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May 26, 2010
I am having several boxex with centos on it. No pb. I have recently setup a new box with centos 5.4 and I am not able to get the network working on it when configuring a static ip.I've configured eth0 and dns using "setup": unsuccessfulI've used the network config GUI: unsuccessfulAnd it is working very well when I let the dhcp getting the setting.I need a static IP.Here is the getinfo output when static ip setup, and below it, the getinfo for dhcp setting
== BEGIN uname -rmi ==
2.6.18-194.3.1.el5 i686 i386
== END uname -rmi ==
[code]....
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Dec 14, 2010
a machine with 2+ network cards, need to setup TFTP server on one card and use internet on another.
the tftpd server works on default routing network adaptor with following configuration.
How set the TFTP server on the secondary network adaptor?
TFTP server tftpd by xinetd configuration in: /etc/xinetd.d/tftp
{
protocol = udp
port = 69
socket_type = dgram
[Code]....
Could not find how to change the post <prefix> I remembered clearly I did before.
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Dec 27, 2010
I was wondering if its possible to see if my ip has been registered under a dynamic dns name? Reverse DNS does not resolve.
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Apr 25, 2011
My university uses 802.1x Dynamic WEP, with PEAP, MSCHAPv2, and no CA certificate. Our IT department actually provides instructions for Ubuntu, and they work, but I can't get it to work in Kubuntu. Here's the instructions using the Gnome Network Manager applet:
- Change the LEAP setting to Dynamic WEP (802.1x).
- Change the Authentication setting from TLS to Protected EAP (PEAP).
- Leave the Anonymous Identity option blank.
- Leave the CA certificate setting to None.
- Change the PEAP version to version 0 if running 8.10, or Automatic if running 9.04+.
- Leave the inner authentication setting to MSCHAPv2.
- Enter your username.
- Enter your password.
- Select OK. A warning message will appear about having no certificate; click Ignore.
- Click Connect.
I'm using Kubuntu 10.10. All the same settings are there for the KDE plasma network manager applet, but the connection always fails immediately. How do I go about debugging this? Is there a way to test this out from the command line? (WiFi in general works fine, on regular WEP and WPA secured networks; just having trouble with this one).
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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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May 6, 2010
I have 4 Ethernet Interfaces. I need Dynamic IP-Addresses for 2 Interfaces. Can anybody help me how can i achieve that
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Nov 6, 2010
We have Verizon as our ISP with a dynamic IP address. We published our website but the IP changes frequently. How can we set Network address translator(NAT) so our website can be published regardless of IP changes? We don't have domain name and have no intention for one.
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Feb 23, 2011
I have a problem with Dynamic DNS for Debian..
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Feb 11, 2010
Fedora 12 64bit What will be the correct steps changing dynamic IP to static IP on F12 console, instead of on Gnome running;
System -> Administration -> Network -> Edit, etc.
I made following test;
Edited ifcfg-eth0
$ cat /etc/sysconfig/network-scripts/ifcfg-eth0 Code: # Attansic Technology Corp. Atheros AR8121/AR8113/AR8114 PCI-E Ethernet Controller
DEVICE=eth0
BOOTPROTO=static
[code]...
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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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Jan 15, 2010
I've setup dynamic port forwarding using Putty, SSH and Firefox.All works well when visiting normal websites (servers listening at port 80). But why can't I visit https websites?Nothing seems to be happening when I visit those.
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Jul 23, 2011
Is there some kind of Ubuntu desktop application that notifies you when your WAN ip address has changed? I don't care about my LAN ip address. I need some kind of popup on the desktop when my ISP assigns the next dynamic WAN ip address.
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Feb 11, 2010
Fedora 12 What will be the correct steps changing dynamic IP to static IP on F12 console, instead of on Gnome running;
[Code]....
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Mar 31, 2010
I am trying to configure a BIND DNS server to handle three websites on my home network, (my site, my sons site and our test site). Since my ISP uses dynamic DNS, we are using DNS2GO to redirect our traffic, 9EACH SERVER HAS IT'S OWN VERSION OF dns2go running).
My problem is that I can't figure out how to configure BIND since I don't have a static IP to enter into the named.conf or reslov.conf configuration files.
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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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May 27, 2010
I want to access and run some programs in the terminal on my office Linux machine from my home through Internet. I use Fedora 10. However the internet connection at office has dynamic IP.Is it possible to access remotely a terminal on machine which has Dynamic IP addresses? How?
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Feb 13, 2010
I want to configure a VPN over the Internet.I installed the 'openvpn' package, generated the key file, transfered it by a secure way to the client, and setted up the configuration file.
So, in that configuration file I input the IP addresses of the tunneled interfaces. Both IPs are static in the tunnel.
Then, I've heard somewhere that I can assign a dynamic configuration IP for the client. I do this registering a range.
Well, when I tried to change static IP to dynamic IP (changing '192.168.0.2' to '192.168.0.0/24') in the configuration file, the OpenVPN didn't work.
Obviously I don't know what I'm doing, and I really, don't believe that simply changing the IP will make it work, but I tried.
I hope I explained my problem as well.
My configuration file:
# OpenVPN Server Configuration File
dev tun 0
ifconfig 192.168.0.1 192.168.0.2
cd /etc/openvpn
secret key_file
In client I execute the 'openvpn' without the '--daemon' parameter.Then I want that my client uses a IP in a range (192.168.0.0/24, for example), instead of a static IP (192.168.0.2).I also thought to use a DHCP server, but I'm not sure that will work.
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Dec 14, 2010
I am using RHEL 5.2. I want to configure Dynamic DNS on it. Can anyone tell me how to configure Dynamic DNS on RHEL 5.2
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Dec 25, 2008
in my iptables script I define the environment like this:
Code:
# ENVIRONMENT
# Private interface
IF_PRV=eth1
[code].....
if I give the IF_PUB interface the DYNAMIC IPaddress assigned by my ISP how can I define it in IP_PUB and also the NET_PUB so I can then use it for the firewall rules.
exemple rule:
Quote:
iptables -t nat -A POSTROUTING -s $NET_PRV -o $IF_PUB -j SNAT --to $IP_PUB
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Mar 31, 2010
I am trying to configure a BIND DNS server to handle three websites on my home network, (my site, my sons site and our test site). Since my ISP uses dynamic DNS, we are using DNS2GO to redirect our traffic, 9EACH SERVER HAS IT'S OWN VERSION OF dns2go running).My problem is that I can't figure out how to configure BIND since I don't have a static IP to enter into the named.conf or reslov.conf configuration files.
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Aug 20, 2010
Is it possible to bond an existing bond. I have 4 nics assigned to 2 bonds for link aggregation. ie
e1000g0 - bond1 - mode =4
e1000g1 - bond1 - mode =4
e1000g2 - bond2 - mode =4
e1000g3 - bond2 - mode =4
I would have presumed that you have 2 x agregates giving 2 x 2gig links and the resilience is that if one nic fails in either bond you carry on with that bond running a 1 gig link until fixed. But, our architect wants to have an active/passive (mode 1) accross bond2 and bond3. I have setup tons of mode 1 bonds and mode 4 bonds but never tried bonding 2 x mode 4 bonds!
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Mar 8, 2010
In the past I've used ddclient to update my zoneedit dynamic dns. Unfortunately, this seems to be broken at the moment. I've submitted a separate thread related to that problem.
What other alternatives are there to ddclient? I'm particularly interested in something that works with zoneedit.com. I'm aware of:
inadyn
inadyn-mt
Inadyn is available in ubuntu. So far I have not gotten it to work but I have not tried too hard yet either.
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Jan 27, 2010
I recently installed fedora 12 in my server where I had a page published in my local net by tomcat, and I was looking on the Internet how to set up an static ip address and this is what I did
on /etc/sysconfig/network-scripts/ifcfg-eth0
# Broadcom Corporation NetXtreme BCM5751 Gigabit Ethernet PCI Express
#
# File: ifcfg-eth0
[code]....
then I can access via ssh by two addresses the one I got from dhcp (10.17.148.223) and the static one (10.17.148.26) I put ifconfig and and 10.17.148.223 appear on eth0 I restart my server and I just can access from 10.17.148.223 I have to put
ifdown eth0
ifup eth0
Again...to access by my static ip, y can access my page by its dns on my server, but I cant access from other computer...so, I guess when my static adress appears on ifconfig I would be able to access my page from other computer...
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Sep 6, 2010
I have a linux box set up as a multi-purpose server for my home with three Windows client PC's. The linux box is based on a slightly modified Slackware 9.0 distribution using Linux 2.4.20 and an unfortinately old, slow AMD processor with a miserable 512Kb RAM. The linux box serves the CIFS file system to the Windows boxes, runs the SQUID HTTP proxy, the Apache web server, a print server, does masquerading, mail serving and a very effective firewall using iptables.
This system, although slow, has run perfectly for several years.Let me say that again - This system works perfectly.I had decided that now is the time to upgrade the hardware, so I bought a Gigabyte LGA775 motherboard which has two 1Gb network interfaces on it, an ASUS 256Mb PCI-E display card, 2Gb of DDR3 RAM, an Intel Core2-Quad processor and a bunch of 500Gb SATA drives to set up a RAID5 array (but I intend that the system boot off one of several 40Gb PATA drives I have).I set up the processor, motherboard, display card, RAM, a SATA DVD Drive and a 40Gb PATA hard disk in a "breadboard" layout and installed distro 13.1, being careful to set up the static IP for the local network, dhcpcd to get an IP address from the cable modem (my internet connection) and to enable ip_forward in the network configuration.
Then I installed a script invoked by /etc/rc.d/rc.local which installed all the SAME iptables rules as my old Linux box. There was one minor glitch when I had to change 8 occurrences of "-d ! $LOCAL_NET to" "! --destination $LOCAL_NET" but that was no problem. I also set up /etc/resolv.conf, /etc/hosts , the BIND server files etc. etc. exactly as in the old box.
I am able to ping mirror.aarnet.edu.au (this is at the heart of Australia's internet hub network - if it's down the whole bloody thing is down) and have the system find the correct IP from the designated nameservers and contact that server with a return trip time of 35ms. I am able to run a telnet session from one of the Windows boxes and edit files on the Linux server. So both network interfaces work and I've got them the right way around.I am able to run FTP on one of the Windows boxes and connect through to mirror.aarnet.edu.au, although it seems to hang when I try a DIR (but then so does the old linux system).
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