I have a problem reaching some hosts on the Internet, namely newegg.com and djangoproject.com. On the same machine and network connection using Windows 7 the host names resolve properly and I can connect to them. The host names are resolving in Ubuntu, but I cannot connect to them.
View 9 RepliesWell, as many proxy applications, GNOME Network Proxy Preferences only allow to ignore hosts. What I want to do is exactly the opposite. I only want to use the proxy for few sites. Is it possible to define only the allowed hosts in any way?
PS: I know FoxyProxy add-on for Firefox does this, but 1)I don't use Firefox and 2)I want the proxy settings system wide not only for browser.
I'm using Ubuntu on my laptop but I'm having a small problem. The network is working fine except for the fact that I can't reach anything on my LAN (can't even ping the router), but everything on the outside works just fine. I can even visit my webserver if I type my public IP.
Where should I begin looking for faults?
Here, enjoy some data. I'm using my wlan0 interface, not sure whether eth0 works or not.
Quote:
$ route -n
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.0.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
192.168.0.0 0.0.0.0 255.255.255.0 U 2 0 0 wlan0
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I am running a server that needs both a wired and wireless connection with static IPs, with wireless as the default link. I'm using the SMCWUSB-G for wireless. I was running Debian for a while and had some routing tables set up as in [URL].... Everything worked until I recently switched to Ubuntu Server 9.10. After the switch a weird behavior showed up: if wlan0 is down, eth0 works fine. But if wlan0 is up, I can't reach any host with either interface (even nameservers or the gateway I am supposedly connected to). ifconfig indicates that nothing is wrong. It's really not clear what is causing this problem. It seems like something has to be wrong with both the wireless hardware/drivers and the routing tables in order for turning wireless on to interfere with "ping -Ieth0".
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I used my computer this morning before leaving for the office, but when I returned this evening, I am unable to reach the internet. Also the light on the mobo where the ethernet cable is plugged in is steady yellow.
My limited experience would tell me it is a hardware failure, but it seems so strange with nothing happening during the day. How might I best diagnose the problem from within Ubuntu (10.04)?
I'm running ubuntu 9.04 and I have set up 2 ip aliases using the /etc/network/interfaces file http://pastie.org/775037 -- when I ping the main address 10.0.2.16, all works fine, same with the first alias 10.0.2.22 -- but I can't reach the 2nd alias 10.0.2.23 I get the following from ping:
PING 10.0.2.23 (10.0.2.23): 56 data bytes
Request timeout for icmp_seq 0
Request timeout for icmp_seq 1
Request timeout for icmp_seq 2
92 bytes from 10.5.0.1: Destination Host Unreachable
Vr HL TOS Len ID Flg off TTL Pro cks Src Dst
4 5 00 5400 06eb 0 0000 3f 01 5e81 10.5.0.34 10.0.2.23
My machine's IP address is 10.5.0.34 I can't figure out why I can ping 10.0.2.22 but not 10.0.2.23 -- seems like there is probably some kind of routing thing that I'm missing, but I'm confused how it would have gotten set up for 10.0.2.22 but not 10.0.2.23 -- hopefully someone out there has an idea -- or can point me to references where I might be able to learn how to debug routing issues on a network?
This has probably been beaten to death, but I can't find anything that fits my exact situation (maybe I'm using the wrong keywords, sorry).
Server:
eth0 - external NIC, DHCP IP from ISP
eth1 - internal NIC, static 192.168.0.1
DHCP running on eth1
IPTABLES set up to masquerade on eth0
I have a computer connected up via server's eth1. It's IP is 192.168.0.201 (/etc/init.d/networking restart) gives me a DHCPOFFER and everything, so DHCP seems to be working fine.
Server:
can access internet I can ssh into 192.168.0.201 (even though it seems to take longer than usual)
192.168.0.201:
can ping server (well duh, I ssh'ed in from the server) cannot access internet for DNS on the internal NAT I'm using the same DNS servers as the router, so the server's
resolv.conf:
nameserver 69.169.190.211
nameserver 208.72.160.67
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I have read many, learning linux,apache,samba,vsftp,ssh..etc from this forum but now i am realy stucked and confused. My samba server has always been reached from internal aswell external networks.
I have switched 5 months ago to Telfort network ( i am not sure... ) but as far as i know it was no poblem to connect the samba server with windows explorer everywhere.No i get the only the login screen when connecting from outside the network and when filling in the credentials it just come back with the login screen. I don't have any problems internal when connecting to these shares and supplying the credentials.
I've set up ubuntu server 10.04 x64 with kvm and bridged networking and installed win server 2008 as a guest os. The guest os has full access to the network including lan/wan but the host os can only reach my lan and not the wan. This is true even when the guest machine is powered off?I have to admit that my knowledge of networking, particularly with respect to linux is very flakey but surely if the guest has internet access this should also apply to the host? My only suggestion is an issue with mac addresses but i don't know where to start. Has anybody ran into this problem before?
View 3 Replies View RelatedRecently I've been unable to load web pages, hosted on my Ubuntu Guest in Apache, from my OSX Host. In fact, I can no longer even ping the Guest OS from the Host. In the past, when I did ifconfig on the Guest, I got an IP of 10.0.1.n. Now I'm getting 10.0.2.15--the default NAT Address. The thing is, I didn't change any settings recently. What I did do is run software update for OSX, Ubuntu, and updated VirtBox.
Current Versions:
VirtBox 4.0.8 r71778
Host: OSX 10.6.7
Guest: Ubuntu 11.04
why I can no longer access my Guest OS from my Host? I spent hours on this last night, to no avail. What would cause the Guest IP to change from 10.0.1.n to 10.0.2.15? As I say, I manually made no config changes.
I use Fed 14. I have China Telecom internet. The wired dsl connection works fine, but the wireless won't work. It has WPA security. The password taken from beneath the router is n2nqrcqx. This password is accepted. Network Manager says I am connected to ChinaNet-TRtk, but in fact, I can't reach the internet via wireless. If I disconnect the cable, I can't get through. I have the settings on automatic dhcp. I have nothing in BSSID, I don't know what that is. I unchecked the box 'require ipv4 addressing for this connection to complete' Ditto that for ipv6.
View 2 Replies View RelatedI'm trying to use ssh-keyscan to get some known_host file population going on, but I have a ton of hosts I want to scan, all with multiple aliases in /etc/hosts. Is there a way to use my current /etc/hosts file to do an ssh-keyscan instead of making a special list of hosts that (from what I've read) ssh-keyscan needs?
View 2 Replies View RelatedI recently set up an Ubuntu server computer (10.04) with the hostname 'morbo', and with a static IP address. With all my other ubuntu systems i can ping and ssh using their host names, like:
[code]...
i can't reach it via 'morbo.local' nor can i reach my other ubuntu systems from morbo by their hostnames. I have seen a 'quick and dirty' solution which might help here : [URL]... , but i don't want to have to add every system to morbo's list and morbo to every systems list, and because it works without manual configuration on all my other systems, i don't see why it shouldn't be possible here. Currently everything connects to one d-link router - does this mean it is the DNS server?
I am not sure if this is a problem with my router or a problem with the fedora 12 server i am using.
- internal here means within my home network, external means from outside it.
I can access my server and webpage:
internally using http://192.168.0.192
externally using http://MYDNS___EXAMPLE.com
but I cannot access the server internally using http://MYDNS___EXAMPLE.com
This is a pain in the butt because I have all of my client software setup with an internal and external access point (ssh, proFTPd, http, MS Access database connected to MySql, etc.)
I have a simple home network with a windows and fedora clients. I'm running fedora 13, but I"m having problems connecting to the pc on certain ports from my windows pc. I can connect from windows to fedora using VNC, and even connect to my postgresql database. However, can not get connected to my Apache Tomcat or JBoss server. When I first installed the OS I went through and configured the firewall but have since disabled it (stopped service). However, I still can't get to the app/web servers.
View 7 Replies View Relatedi have sun Virtual box installed on my centos as my host os and centos as guest os.The ip on Sun virtual box virtual interface is10.0.2.15 and the ip on the physical machine is 192.168.1.11.when i try to ping the ip from my vps on centos to my physical machine it pings but it does't work when i try to ping my vps ip from my physical machine.Please recommend the route enteries i need to do in physical machine
View 3 Replies View RelatedI'm setting up my server under CentOS 5.5 (text mode) and I installed cherokee server but I couldn't reach it with the ip given by ifconfig. So I figured it might be an problem within cherokee. I also wanted to install webmin so I did that to see if I could reach that one. But also the webmin server is not reachable (I know the port number should be behind the ip ). So if I look up ifconfig I see the server has got an local ip (192.168.1.42) but I can't reach it from another computer in the same local network.
View 1 Replies View RelatedProbably an easy (which means stoopid) question...I am trying to reroute a website using my hosts file so that it matches my servers certificate file for testing without effect dns and the live site.When I went to edit my /etc/hosts file it is non-existent. I have, I am assuming in it's place, hosts.allow and hosts.deny. Can anyone explain why I do not have a hosts file?
View 1 Replies View RelatedThis is a RHEL 5.4 install. I did a fairly routine install setting up a static IP address of 10.5.96.10, a subnet mask of 255.255.254.0, and a gateway of 10.5.96.1 with the standard DNS setup for this network. These are all standard network setting for this network and otherwise work fine on other systems. The IP, gateway, and subnetmask all appear correctly on all relevant configuration files. This server can not ping any other system on the network and can not ping its default gateway. No other systems can ping this one either. Also this system can not ping "localhost" or its own hostname. The hosts file contains the line:
[code]...
I can ping 127.0.0.1 and 10.5.96.10 and it works fine. Also the firewall is disabled. I know I probably can't get a straight forward fix with the information I have on hand right now, I'm more of a Debian guy, so there might be some Red Hat intricacies I'm not familiar with. I think I had a CentOS install some months back that had this issue and I don't remember how I fixed it, or if I even did. I might have just replaced it with Debian. That's unfortunately not an option this time around since it's not my box.
I have to get soem statistic about interfaces from /proc/net/dev. but statistic on this file is reset when get reach more than 4G byte.I think linux has limitation on this case.
View 1 Replies View RelatedI'm trying to give some windows users a permanent connection to a samba share behind a firewall over the public Internet. I know I can give them access with something like winscp (which they have done) but really I'd like to do it with a VPN so it seems seamless to the user. However I have no idea how to set up the server to support this and am finding the documentation a bit confusing. The samba share is on a Debian box and the firwewall is a Linksys WRT54GL.
View 1 Replies View RelatedI have openvpn tunnel setup between two CentOS servers. One of the CentOS servers also acts as a DHCP server for some client computers.
Server A= OpenVPN server
Server B= OpenVPN client (connects to Server A with OpenVPN)
The two CentOS servers can ping each other (172.16.0.0/24) via the tun0.
However, client computer connected to Server B (DHCP server) can't reach 172.16.0.1 (which is the OpenVPN server).
I think I am missing some routing in my "ip route show". Following is the full picture:
What command can I issue to get this fixed? something along ip route add?
There is no firewall service on both end. service iptables stop! I can't bridge eth1 and tun0 as DHCP server might mess up the other side. I can't do a push of "redirect-gateway def1" because then clients loose their IP as they send DHCP requests to Server A.
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What I want: multiple virtual hosts with ssl and only 1 ip address: In my example: server = 192.168.227.129
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I bought a network printer, gave it a host name, address should be assigned by my cable or DSL router. Thats what DHCP and DNS is made for right?Now I will print to that printer from my (Lucid) Kubuntu box and resolve it by it's hostname.I can't ping it by printername, I can't ping it by printername.local.It works when I login my router, read out the IP address and hostname the printer registered at the routers DHCP-table and use that address.What can be done that a router transfers the hostnames it has in it's IP-table to clients upon DHCP resolve AND whenever a client get's a new IP-Address?
View 9 Replies View RelatedWhat happen if we assign a static IP address to both linux and windows host?Consider host A is a ubuntu machine and host B is a windows machine. I first set a static IP for host A (W.X.Y.Z) and connect to it through ssh. Then I duplicate that IP for host B (W.X.Y.Z).The result was that I could no longer connect to the ubuntu machine!
View 9 Replies View RelatedI have read the man files on hosts (deny/allow) and think I understand how they are supposed to work but reality has proven me wrong.
My simple test case was to add "ALL: ALL " to the end of hosts.deny which I though should make the Internet not work. I can still look up hosts fine so apparently I don't understand these files or Ubuntu is ignoring them.
This is my hosts.deny file
Code:
Code:
and hosts
Code:
hosts.deny is the only file I have edited (so far)
Something is definitely odd here:Quote:
[rena@mercury:~ 500]
$ hostname
mercury
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I often manually add a troublesome domain (e.g., advertisements, fake virus alerts, etc.) to my /etc/hosts file on Ubuntu 10.04 Lucid; but the effect isn't immediate.My hosts file is already fifteen thousand lines long (having combined all the hosts files I could find on the net, including the MVP one); but I still, almost daily, find a new irritant to add to my /etc/hosts file.My problem is I do not understand WHEN the /etc/hosts file is next read after a change.I've been rebooting to make sure the hosts is re-read; but there must be a simpler way.My question:
- WHEN is the /etc/hosts file reconsidered in Ubuntu?
- Is there a way to have the /etc/hosts file re-read sooner?
In my home network I have two ubuntu desktops that are connected to a router. On each pc I have installed Virtual Box 3.2 and various OSes. I need to sometimes run multiple vm's at the same time which is very RAM intensive so I was wondering if there is any way to connect VM's on different hosts so that they appear they are in the same network? Various articles that show up as search results hardly pertain to what I want to do. Basically, I would like to make vm's visible in the network but on different hosts and with ip addresses that would reflect that those vm's are on a same network. Like ubuntu 1 has vm's a and b and ubuntu 2 has c and d. When I start all of the vm's, I would like them to connect to each other just like they are in the same network without "knowing" they are on different hosts.
View 3 Replies View RelatedNot sure what iis going on, I can ping some hosts on the internet but not others see below (adobe is not the only example) Works OK from another host on the same network with same GW and DNS iptables is turned off
[root@havoc init.d]# ping www.arrl.org
PING www.arrl.org (184.106.62.248) 56(84) bytes of data.
64 bytes from www.arrl.org (184.106.62.248): icmp_req=1 ttl=55 time=94.1 ms
64 bytes from www.arrl.org (184.106.62.248): icmp_req=2 ttl=55 time=93.0 ms
64 bytes from www.arrl.org (184.106.62.248): icmp_req=3 ttl=55 time=99.4 ms
64 bytes from www.arrl.org (184.106.62.248): icmp_req=4 ttl=55 time=96.8 ms
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