Nat error no route to host mac

No route to host ping: No route to host When I traceroute farmville: No route to host 1 traceroute: Host Database localhost is used to configure the loopback interface when the system is booting. Do not change this entry. Many thanks. JakeGould Can the iMac and the Ubuntu computer ping and traceroute each other or is the iMac just completely refusing it all? Is there something weird in the Mac's routing table?

Randolf Richardson Randolf Richardson I'm not familiar with ICMP, but seems doubtful since I am able to connect through other computers on the same network. See man ping and man icmp. Benjamin Schollnick Benjamin Schollnick 4, 12 Sign up or log in Sign up using Google. Sign up using Facebook. Depending on the device's manufacturer and the model itself, the "place" where you do the forwarding will differ: NAT, NATP, Custom Services, and Virtual Server are the most commonly named sections, though it's entirely feasible yours is named something else, but the fundamental procedure for creating a port forwarding rule is more or less the same and self-explanatory.

You may be lucky and find a step-by-step guide for this procedure at http: They have an excellent list of home routers and modems and configuring advice for them. You need to set port forwarding at each router all the way from "public internet" upto your PC, always setting the forward to the next device inwards from smart modem to router, and from router to PC. See an explanation here: If you have not port forwarded from your modem to your router, it will be pointless to port forward from the router to your computer as the TCP traffic from Vuze will never even make it past the modem to the router.

ICS is a bad excuse for a router in quite a lot of ways but it can be configured to forward services read: You could follow the "Make sure you really have a NAT problem" advice to check if you've done it right, but, really, the more enjoyable test is looking in "My Torrents" to see your smileys start to turn green as soon as you have closed the Advanced Settings dialog.

Firstly the earlier notes on port forwarding for your router apply as before. Computers running Ubuntu, by default, come with all the ports locked down and you need to open the ports in ubuntu by using the iptables command. Other flavours of linux behave similarly. The sleep is there to make the script wait a few minutes to allow subsequent firewall configuration scripts to run.

The key is that the opening of the Vuze port is not countermanded by the firewall initialisation which runs later. Your configuration change will now persist through reboots. Further info on the startup process in this ubuntu howto. Futher Ubuntu Support here. If you are connected to a VPN Virtual Private Network and getting a NAT error when trying to run Vuze, it is most likely due to all of your internet traffic being routed through the remote network you are connected to. It is possible to configure the remote network to allow the traffic through, but given the added overhead of a VPN, it is better to run Vuze when not connected to the VPN.

Vuze will run better and your downloads will be faster. If you have no choice and must be connected to a VPN, then you must contact the network administrator of the remote network you connect to, and discuss allowing the Vuze port through the VPN to your PC. It is disabled if the checkmark next to Stateful Firewall does not appear. To avoid the problems, go to network settings and temporarily disable it, before starting Vuze.

Or, if you have two network adapters, simply run the VPN client on one, and Vuze on the other. Even if you don't connect to a VPN, but this service is enabled, it can cause problems. If you're sure you don't use VPN connections, then it's safe to assume you don't need the Routing and Remote Access service enabled. If this fixes your NAT problem, and the Routing and Remote Access Service's startup type is set to Automatic, change it to Manual or disabled to prevent it from running upon next reboot.

Just like the wide array of routers available to consumers, so too is the list of software firewalls, and each has different features and capabilities. Because of this huge variance, we will again attempt to approach this as broadly as possible. A software firewall can offer the same protection that a router can and it can mimic the symptoms of a NAT error. So why should you use both? A router can only protect you from incoming data on certain ports - a good software firewall can monitor outbound traffic too.

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Consider this an added layer of security. For those that use a software firewall on their PC, the following information applies to everyone who hopes to fix their NAT error. Below is a listing of some of today's common software firewalls guides that should help. Additional information on how to open your firewall with some programs and Operating Systems here: Also, confirm whether or not your motherboard is based on the NF4 nVidia nForce 4 chipset. Many of these new motherboards come with onboard firewalls that are enabled at the time the drivers are installed. Some anti-virus programs are extremely sensitive to incoming data and will report "false positives" when used in conjunction with file sharing applications though this is no reason to completely remove your anti-virus software.

Instead, you should use Google and see if other users have encountered such reports. Other anti-virus programs can at times contribute to a NAT error. If your "outermost" device, e. We have seen many Vuze users mistakenly enable or disable an option in Vuze without knowing what they do.

While exploring your client is encouraged, some of these options may have adverse effects. Two things of note:. This page's purpose should help the vast majority of those who have encountered a NAT error while using Vuze with a "typical" setup. There are other circumstances, though, that require further investigation.

More help sections will be added to this guide in time. Come to the Vuze forums and ask for assistance there. Be patient. Be prepared to answer these questions:. Jump to: Quick outline [ edit ] To fix a NAT issue, you have to consider multiple factors that can cause it. There are several causes of reachability problems: The exact wording is different for each router, thus it might be called port forwarding, opening pinholes through the firewall, NAT rules, virtual server or something else.

I have, of course, rebooted, but I'm at a loss as to what would be causing the problem with my connection to this server, from this computer, specifically. It's a problem on the server. Sounds like there is a restrictive firewall in place. A telling sign: Contact the administrator. But like I said in 6: Oh, and I am the administrator. Are you trying to ssh from the Mac using a hostname or an IP?

If it's by hostname, try using "hostname. Are you getting through the firewall via VPN, port forwarding? Re-reading your question, I'm also not clear on whether this server is part of your home network or if it's in a remote location. Are you sure your https requests are getting through and you're not maybe just seeing a cached page?

HTTPS is on a different port. Pings are RCMP. Therefore none of those failures necessarily indicate a problem.

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Try "ssh -v" for more on what's actually failing. So, your problem is that your Mac B0 cannot ssh to server S0, but you can connect from another machine on the same network B1 to S0, and you can connect from B0 to another server S1? It looks like a firewall on S0 is not letting in packets from B0. Both produce the same results. The server is not a part of my home network. It's a virtual server leased from a hosting company.

Turn on debugging for client and server and try a connection. Is the server seeing the connection request? Does the client ever talk to the server? Here are the results of -v.

1. Solved: NAT configuration problem, stopping OSX - Cisco Community.
2. Temporary Maintenance.
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4. NAT problem.

Yes, that is correct. As I haven't actually modified anything on S0 to prevent access, I'd guess my best course of action is to contact my web host with this information?

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Here's what my webhost support has to say: It's not possible that you're experiencing a firewall problem because all the computers in your home network should have the same IP you can double check this but I would be extremely surprised to find differently - go to whatsmyip.

Both machines do indeed have the same IP. Take a look at the access logs of your SSH server when you initiate a connection from B1 and again when you try from box B0 failure.