Fedora Networking :: F13 - Resolve Names On Intranet?

Jun 16, 2010

I have a windows PC and a fedora 13 linux box. When connecting to the linux from windows, I'd like to type the hostname instead of the ip address. Apart from setting the hostname, what do I have to do to publish my hostname on the intranet. (set up a nameserver?)

Though hostname works on the linux box, even this fails: nslookup myhostname Also I'm a newbie. I've tried installing some packages like samba and dhcp, using yum...;service chkconfig... and then checking whether nslookup or nmblookup work with my hostname. But it's just guesswork. Under system -> Administration there is no network option. but it is not clear what package is needed to install it, or whether such a thing is supported in fedora 13. I did try system-config-network, but it has few options none of which pertain to hostname resolution. The fedora manuals dont seem to cover it, at least in recognizable plainspeak to me.

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Software :: Using NAT And Want To Do Intranet Email Using IP Addresses Instead Of Names

Jan 10, 2011

I've got 2 computers plugged into an "ethernet broadband router" sitting behind a DSL modem. I'd like to be able to send mail from one of the 2 computers to the other, preferably without going through the DSL modem, and preferably without assigning host names (if that's possible).

I've installed/configured sendmail (and sendmail-cf and m4) and am attempting babystep tests of the configuration by sending mail to a user on the originating computer.

So I can send email to root@localhost and it is received on the local host.

But if I try to send it to root@, it bounces back like so:

This seems to be pretty fundamental (the localhost has an address of Shouldn't I be able to use the IP address in place of the associated name?

Here's my hosts file /etc/hosts:


And here's my resolv.conf file, although I wouldn't expect that to come into play since I'm using IP addresses instead of names /etc/resolv.conf:


Here's my /etc/mail/access file:


I did verify that sendmail was configured to listen in on more than just the loopback address in /etc/mail/sendmail.mc, but that doesn't seem to be relevant until I can get email through to

Which files do I need to create/touch to get this to work?

And can it be done without talking to the DSL modem?

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Ubuntu Networking :: 10.04 - Cannot Resolve Names Using DNS

Sep 16, 2010

A while ago I downloaded a VMWare VM for 7.10. I then upgraded it to 8.10 and it was working just fine. I just did the upgrade to 10.04 and I'm having problems with my networking. The really odd thing is that I can ping machines on my local network and out on the Internet by IP address but it will not resolve names using DNS.

I've got the network set up for DHCP. I also tried DHCP address only and manually entered my DNS server addresses but still no luck on resolving names with DNS. At the end of the day, I don't really care if I get this fixed or just get a new VMWare VM. (I can't create one because I only have the player.)

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Networking :: SLES 10 SP3 Will Not Resolve DNS Names?

Feb 14, 2011

I have setup an static IP on this server, it will ping internal sites , but when I try to browse the internet it does not do anything. I have set up the gateway, the firewall, and the domain fie, but still no luck.NOTE: When I try DHCP it will work ( it will resolve the DNS of the pages), but since this is a server it requires an static IP.

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Ubuntu Networking :: NAS Server - Cannot Resolve Non DNS Names

Feb 14, 2010

I have a NAS server running Debian with Dnsmasq (local DNS and DHCP service). This is working well, including fetching upstream requests from my ISP's DNS service and caching them locally. I have another PC not running Ubuntu which happily resolves DNS and non-DNS names. E.g.
ping hagrid.
ping hagrid
both work.

However, this is not the case on my Ubuntu PC. It is only able to resolve DNS names, not non-DNS names.
ping hagrid.
works but
ping hagrid
does not.
I have the standard nsswitch.conf and host.conf.

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Networking :: Resolve All Random Server Names?

Apr 9, 2010

I'm confused. Why do I get a response from ping for any scrambled internet server name I type in??The only thing that is necessary is to start with "vvvvvv."(It should be triple W in this post, but I need to do this work around due to the forum rules )And it always resolved to different IPs with similar ping times.What's going on?

Code: > ping vvvvvv.q3g87uv8123907.qt1
PING vvvvvv.q3g87uv8123907.qt1 ( 56(84) bytes of data.
64 bytes from vvvvvv.q3g87uv8123907.qt1 ( icmp_seq=1 ttl=249 time=55.6 ms


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Ubuntu Networking :: Resolve Local Network Names?

Mar 27, 2010

I'll apologize in advance for I'm sure this has been covered already, but I'm not sure of the search terms to even use to begin solving this problem. I don't know what I don't know.

I have three computers on my home network and want to reach them by their name instead of IP address since their ip is dynamically assigned. I'm using a Linksys WRT54GL router and have noticed that there exists a "DHCP Clients Table" in the router that seems to hold all the necessary information - host names and ip addresses.

How can I get my computers to use that as the lookup table to resolve the host names? And is this even an optimal way of being able to resolve local names?

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Networking :: Dns Server Not Able To Resolve Local Domain Names

Mar 19, 2009

I recently installed bind9 on mandriva 2008.1, after having done the necessary configuration.. I still can't find my domain I configured cant ping on other machines on the LAN but can actually ping on any other website on the internet even though name server is configured to point to local machine..... I dont understand what I'm doing wrong.

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Fedora :: Browsers Don't Resolve Domain Names While Other Programms?

Apr 16, 2010

I'm new here, so please be gentle! I recently installed F12 64 KDE on my Acer Aspire 1810TZ, could connect to the WLAN router but neither the native Konquerer nor Firefox could open any pages...

resolve.conf has the DNS according to DHCP offer, from command line dig properly resolves the name, ping (e.g. google) works, telnet to domain-name on port 80 works, GET too. When using the browser with the domain-name I tells me "Server not found", tcpdump doesn't display any activity. But when I manually change the domain-name with the IP (received by command line dig) then the browser has no problem how do browsers interact with the network resources of the OS?

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Ubuntu Networking :: Windows Clients Lose Ability To Resolve Local Domain Names

Dec 2, 2010

I have an internal domain (dev.lan) for which my Ubuntu server is authoritative. We have a number of subdomains under that domain (test.dev.lan, svn.dev.lan, etc.). The server also acts as the primary DNS server for my office. It was originally set up under Ubuntu 8 and worked great.

However, ever since we upgraded to Ubuntu 10, our Windows clients periodically lose the ability to resolve domains on the dev.lan domain. Internal IP addresses can still be pinged from the Windows machines so it does not appear to be a network-connectivity issue. External domain names continue to resolve without any problems. The only workaround is to restart networking on the Windows clients. It's frustrating because it happens several times a day.

bind9 logs no obvious error messages.

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CentOS 5 Server :: DNS Does Not Resolve Names Except To Localhost

Feb 9, 2010

We installed CentOS 5 at our school and are attempting to get 2 simple DNS servers online. These are simple name resolution servers for our network. We installed the needed caching nameserver packages via Yum and all seems to be well, but for some reason when the server is online, it fails to resolve DNS records except when we direct the requests to its (localhost) interface. As for the server specs, the DNS server is running on a Virtual Machine, and the ESXi server has 2 quad-core Xeon CPU's with 48 Gigs of RAM (in short.. hardware is adequate.)

Here's more details:
When the box boots up, we can confirm that the named service is running and it resolves DNS records when we direct queries to its localhost address:
[root@ns1 ~]# dig hotbot.com @localhost
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> hotbot.com @localhost
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55510
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 4, ADDITIONAL: 0 .....
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5_4.2 <<>> hotbot.com @
;; global options: printcmd
;; connection timed out; no servers could be reached

What would cause the Named service to not answer DNS queries from the physical IP but only from it's internal IP?

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Debian Configuration :: Cannot Resolve Local Network Names Only

Jul 25, 2010

I have three Debian systems running, along with several XP laptops, PS3 and two DirecTV systems. I use two of the three Debian systems as media servers, and the third is an older system mostly for playing around with. My home network is running fine with the following nuisance. The two newer Debian (Lenny) systems are <barney> and <mitzi>, the older is named <oscar>, running Debian Sarge 3.1. From either locally or remote login to <barney> and <mitzi> I can ssh into either of the other two systems, however when logged into <oscar> I cannot ssh by name to either of the other systems. e.g. ssh: mitzi: Temporary failure in name resolution..However, from <oscar> I can ping outside my network (e.g. ping www.google.com) with no problems.I can also ssh to the other systems via IP address, just not by name.

I've compared the /etc/ssh/ssh_config, /etc/resolv.conf, /etc/ssh/sshd_config and other files between the two systems and not seeing anything peculiar. arp, route, etc., don't show different behavior between the systems either.

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Server :: Using BIND To Resolve Internal Non-FQDN Names

Sep 3, 2009

I have an RHEL5 server running BIND. I'd like to be able to resolve internal, non-FQDN names such as "wiki" for the company internal wiki. in my named.conf file...Named-checkzone returns no errors, and nslookup works when specifying the server explicitly, but no browser resolves the name when entered in the address line. I know this by no means a standard use of BIND, but I'm sure someone out there's pulled this off. I did see when googling someone suggest "load the root zone (.) as master, and add your "hosts" as TLDs, using CNAMEs", but tried that and probably did it wrong since it didn't work.

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General :: Windows XP Machines Can't Resolve Names On To Redhat 5 Dns Server

Jun 7, 2010

I configured my dns server running on redhat5(test.com, ip-, all is working perfect on the server its-self and on the client machine(xp), it cant resolve the name [url] but can resolve when i use [url]are ok, nslookup displays the following error:

The reverse is working fine from the redhat machine, NO firewall on the client xp machine xp as host name is added in /etc/hosts

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Software :: Windows Computers Can't Resolve Samba Share Names In 10.04

Oct 2, 2010

After upgrading my ubuntu server from 9.04 to 10.04, the window computers couldn't resolve samba shared names anymore, the error code displayed by Windows was 0x80070035.

I was using the ubuntu server as a samba server, using 'share' as the security authentication method, it has been working very well under previous ubuntu versions but, after upgrading to 10.04, the windows computers can't access the server shares anymore; the linux computers don't have any problems (I can access the shares from linux).

As a workaround, I've added the name of the server in c:windowssystem32driversetchosts; but I'd like to know how to fix the problem without modifying every windows computer.

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Ubuntu Networking :: Setting Up An Intranet In 10.04?

Jul 7, 2010

I want to do is make an old computer of mine that I use for web development be accessible to anyone within my LAN only.

so in a nutshell i don't want the world wide web to be able to access this server since I use it for development work only and i do most of my actual development work on another system since most of the applications i use requires windows.

I know you can block incoming traffic to all IPs or add individual IPs to allow in, but how can i make the firewall only accept incoming traffic from those within my LAN network?

if you wish to know what I'm using to configure my firewall, I'm using firestarter on this server

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Ubuntu Networking :: VPN Intranet But No Internet?

Jul 15, 2011

i've installed a PPTP VPN and have it configured under webmin. fine.i've connected from a remote laptop to the VPN and can access the local netowrk with it. greati really want to be able to access the outside world whilst tunneled through the VPN but clearly i need to do something else?

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Networking :: How To Configure Intranet PC As Gateway

May 1, 2009

I am using Fedora 10. I have a network design like that:

WinServer --- (r1)router(r0) --- (eth1)LinuxPC(eth0) --- intranetPC
All netmask is
WinServer network is
intranetPC network is, gateway is IP of the LinuxPC(eth0):

r1 -IP:
r2 -IP:

eth0 -IP:

I search in Internet several days to find how to configure the LinuxPC to a gateway. The LinuxPC can ping and connect the WinServer and intranetPC correctly, but the intranetPC cannot ping and connect the WinServer network.

I used the webmin to configure the Gateway.
I used the iptables to set allow all connect, than
iptables -t nat -A POSTROUTING -eth1 -j MASQUERADE
iptables -A FORWARD -i eth0 -j ACCEPT
echo 1 > /proc/sys/net/ipv4/ip_forward
In "/etc/sysconfig/network" add "FORWARD_IPV4=true"

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Networking :: See Intranet Site From Behind Gateway?

Jul 28, 2010

There are a lot of boxes in this network and we have intranet site. If I connect computer directly to the network with everything set to automatic. I can see this intranet site. But I've installed a switch. One box has two net adapters and it takes internet, intranet and all from one adapter, the other adapter is connected to switch. Now, I have connected to this switch two computers. Internet is working fine. But I cannot get to this intranet site from these boxes. I can get into shares of other computers in the network but they cannot see me. Everything is hidden behind the gateway. But that's not the problem for me. All I want is to get to this intranet website. How can I do it?.

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Fedora Networking :: How To Control Interface Names

Apr 23, 2010

We are making an embedded product based on Fedora 10 (this could change, but right now we stick to 10 because it works ok). We have an intel PC board with a build a normal ethernet adapter. Then we have a home build PCI-express card with 4 ethernet adapter build into a Xilinx FPGA (Xilinx Temac) (we got the driver from git.xilinx.com and modified it enough to make it work).

Now, by problem is: How do we control the device names of these ethernet adapters? It would be really nice to have them called eth0, eth1-eth4 in the order mentioned above, such our software always knows which to use for what.

Also: What to we do when the our adapter card is replaced because it is broken? A new card will have new MAC addresses and therefore the adapters will get new names destroying our IP configurations.

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OpenSUSE Network :: Cannot Resolve Host Names On Local Network?

Mar 9, 2010

I have a mac and an openSUSE box connected wirelessly to a router. From my mac, if I ping the Linux machine by both ip address and hostname "elmo.local", I get a response. If I ping my mac from the Linux machine using its ip address, I get a response. However, if I ping the mac from the Linux box using its name "kermit.local" - nothing!

This means in order to share files between them via the network, I have to use the ip address rather than name, but I'd rather not. When I had Ubuntu installed instead of openSUSE this all worked fine out of the box, so I'm assuming it's a problem with the setup of openSUSE rather than the router or the mac.

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Networking :: Connect Apps Through NAT To Separate Intranet

Nov 29, 2010

I have client workstations on separate intra-net LANs. Both intra-nets use network address translation (NAT) or masquerading on the LAN. The private network IP address should not matter (unless it does). When LAN-1 connects with an exterior web site, it will leave a record of the ISP public IP address. A LAN-2 connection could read this record, but how would it know how to reach into LAN-1? How can a network application running on a LAN-1 workstation find and connect with a network application running on a LAN-2 workstation? There is a utility called "woof" where one workstation presents a limited feature web browser for access by other hosts on the same LAN.

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Fedora Networking :: Change Network Interfaces Names?

Dec 11, 2009

I found problem in FC 12 release. I installed fc 12 to server (earlier there was FC 7). Then as always i realised that names of interfaces (eth0, eth1, eth2 .... eth9) changed after install. eth0 became eth9, eth1 became eth5 ... Earlier on previous fedora releases i solved this problem correcting HWADDR in ifcfg-eth files, so i linked MAC addresses to names (eth0, eth1, eth2) as i wanted in a right order. Now I can't do this. After correcting these files and restarting network sevice i constantly get a message: device ... has different mac than expected. I looked ifup-eth file and compare it with the same one in fedora 7. And i found that in fedora 7 there is function rename_device which processes if HWADDR value doen't coincide with real mac address value. See code:

# remap, if the device is bound with a MAC address and not the right device num
# bail out, if the MAC does not fit
if [ -n "${HWADDR}" ]; then
if [ "${FOUNDMACADDR}" != "${HWADDR}" ]; then
curdev=`get_device_by_hwaddr ${HWADDR}`
if [ -n "$curdev" ]; then
rename_device "${REALDEVICE}" "${HWADDR}" "${curdev}" || {
echo $"Device ${DEVICE} has different MAC address than expected, ignoring."

But in fc 12 release there is no function rename_device!!!!!!!!! So in this case if HWADDR value is not the same as FOUNDMACADDR value (which equal to REALDEVICE mac address) i just get an error message So I can't change interfaces names, as result i can't organize right order of network interfaces as it was earlier on fc7.

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Fedora Networking :: Resolving Host Names To IP Address ?

Jul 27, 2010

At work we run DHCP. hostnames have the format: computername.city.mycompany.com

I have a laptop runing Fedora 13 and a desktop I use for backups, etc. My laptop is named copernicus. Desktop is named galileo. If ping either hostname from itself I get back the localhost IP address. If I ping the fully resolved hostname it tells me unknown host. The desktop is exporting an NFS share I use for backing up work data. I need the laptop to be able to resolve host names to mount the share since we use DHCP. The desktop is dual boot and if it is booted into windows my laptop can resolve the hostname properly. What do I need to do in Fedora to get it to register a hostname with the DNS and/or DHCP server? Should the domain and the search path below both say the same thing?

Here is resolv.conf on the laptop (I am at home). The desktop looks the same, except for a different nameserver. Both computers can resolve other hostnames, just not each other.

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Ubuntu Networking :: Recognize Intranet Host Server Name?

Feb 19, 2010

I am using Ubuntu on a Windows network.

One of the computers have apache server (working), it has IP, and the name of the computer on the network is "servidor"

I can't access from ubuntu, if I type http://servidor or, it goes to [URL], but I can access shared folders, just the host intranet server I can't

I have vmware with windows xp, and I can access http://servidor from there, but not from Firefox in Ubuntu.

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Ubuntu Networking :: Use Intranet And Extranet At The Sanme Time?

Mar 11, 2011

(ubuntu10.10)i want to use use the Intranet and Extranet at the sanme time at school,how to set ?my Intranet ipv4 : gw Extranet is DSL(use DHCP)my problem is when i use one of them,i must break the other.

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Fedora Networking :: Local Host Names Without Domain Using Bind?

May 10, 2009

I want to use single label host names on my local LAN, without using any domain (at least no registered one). My machines should be named in a fashion similar to 'myserver', 'mydesktop' etc. so that i from a browser on any LAN machine may write 'http://myserver', and get the webserver on 'myserver' (so NO domain part, e.g. myserver.domain).

Do i need to create a DNS zone for each host or is there a way to put all host in a single zone, if so; which? Would such a name be considered a root domain?

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Networking :: NFS Mount Fails - Times Out - NFS Server Is In DMZ - NFS Client Is In Intranet

May 14, 2010

Both server (web01), in DMZ, and client (app01), intranet, are Linux OEL5.5.

A few hints follows:

1- I ssh to web01, in DMZ, from a intranet machine on my desktop, export my DISPLAY, and try to bring up xclock; nothing happens.

2- traceroute from web01 to app01 fails.

3- NFS mount from web01, nfs server, to nfs client, app01, fails.

How should my network configuration on web01 or app01 be to make this NFS mount from web01 to app01 work?Each server has 4 NICs, I've only used eth0.

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Fedora :: Cannot Login Into Corporate (intranet) Portal

Oct 15, 2009

I can not open the corporate intranet portal, runnnig on windows server 2008 with domain users. In Centos I could login just fine - firefox/konqueror just prompted me for my NTLM windows domain username and password - I typed those in and browers sucessfully loggem me in and I could surf the corporate portal. Note that NTLM authentication is configured as a fallback from kerberos authentication (so told me our portal admin)

However, in Fedora11 when I try to open the corporate (intra(not inter)net) portal, browsers just give me "Bad Request (Invalid Hostname)" error instead of prompting me for my domain username/password. I'm logged in on my F11 box as a local (not domain) user - as I did also previously on Centos Box.

I disabled SELinux, I disabled the firewall but still no luck. Not being able to open the corporate portal is a major showstopper for me, as I can not access many applications hosted there.

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Fedora :: Use Wireless For Internet And Wired For Intranet

May 23, 2010

Currently I am using Ubuntu but I am having a huge problem with it right now and it may force me to abandon my linux hunger and get Win 7. I am hoping that Fedora may be different enough that it will solve my problem if I switch. I have my linux box (ubuntu 9.10) that connects to the internet through a wireless usb dongle. and it works perfectly.I have network shares that allow me to share content with my media player (modded xbox) in a different location of the house. I added a tv to my office and connected another xbox to it. This connection to my linux machine is made through a switch. This wired intranet connection works fine. I can see all of my shares.

The problem I have is when I am using the wired intranet connection and I want to surf the web. I cant. I have to disconnect the wired connection to do so. IS Fedora different enough to to allow me to be able to do so? I am a linux newbie and learning more everyday and I love it.

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