I have a domain and the settings for it are pointed at my IP address. But when I look up my IP address, it does not show my domain as the hostname. What settings do I have to change to make my IP translate into my domain as the hostname?
View 3 RepliesI've got 2 domains:
[URL]
This is how I've configured my resolv.conf file:
[URL]
When I run the host command, it can resolve machines in one.domain.com using both hostname and ipaddress. But when I run the host command for machines in two.domain.com, it only works for hostnames but not ip addresses. The result for ip addresses is:
Host 100.3.2.1.in-addr.arpa not found: 3(NXDOMAIN)
Why doesn't it try the 2nd nameserver in the resolv.conf file when resolving by ip adddress? Reverse pointers are configured for each machine in their respective domain dns servers. O/S is Oracle VM Server 2.2.1 (similar to Red Hat). Kernel is 2.6.18-128.2.1.4.37.el5xen.
I got this message on Friday from just one domain. uote:mailsrv.forthnet.gr #<mailsrv.forthnet.gr #5.5.0 smtp; 554 5.5.0 Your message was considered to be spam by the FORTHnet Antispamming Policy and was not delivered to the recipient. The following spam tests returned positive for this message:FORGED_RCVD_HELO,RCVD_IN_BRBL. For further information visitWe are not a spamming community but it seems we have a statice IP address that has a Reverse lookup to "myipaddress.static.lyse.net" and not my email domain. Would setting a cname mail.mydomain.no -> myipaddress.static.lyse.net cure this problem or are there more tricks to be performedOnce I have cured the FORGED_RCVD_HELO I can move to getting the IP removed from BARACUDA.
View 2 Replies View RelatedI am using RHEL5. These are my config files:
Code:
options {
listen-on port 53 { 127.0.0.1; 192.168.14.54; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
[code]....
I've got a home server running Ubuntu Server 9.04 and several machines running Ubuntu Desktop (9.04 and 8.04) and Windows (XP, Vista and 7). Now what I want to do is to create a domain and directory server similar in function to Windows Server w/ AD and join my other machines to the domain, but am not sure where to start. I already have file shares with Samba but now I want to setup a domain.
View 3 Replies View RelatedAt the school i work in i have a server2k3 server that provides a domain to all the windows clients, aswell as a fedora server that acts as an imaging machine and webserver.
Im rather concious of the fact that if for any reason the Server2k3 server was to die there is no backup of active directory, or anything that can take its place whilst a replacement is found.
So is it possible to use a fedora machine with samba as a secondary domain controller? so it can be used as a login server, and has a copy of AD.
how to set reverse dns for my IP? I've configured bind with a reverse dns for my IP, but it doesn't work when I test it.
View 2 Replies View RelatedI want to be able to SSH into my computer that I can't expose port 22 on. I've tried the ssh -R ... several times, but can't manage to make it work.I have my home computer (want to SSH into), server (can SSH into), and some computer I want to SSH from.Do I need to install the sshd on the machine I want to SSH into? What are the commands I need to enter to forward from my server to my home computer?
View 1 Replies View RelatedI have the following bind9 configuration, and I'm trying to resolve reverse lookup IP address to name.
$ttl 38400
mydomain.org.INSOAmyhosting.com. (
1243281304
10800
[code]...
** server can't find 1.2.3.4.in-addr.arpa: NXDOMAIN
Is my PTR wrong, or what do I need to have the reverse lookup working ?
Note: I replace real IP by 1.2.3.4, same for my domain name.
I have the zone record 0.16.271.in-addr.arpa which is working fine.
The NS for that zone is setup for my own name server.
I however would like to forward requests for 172.16.0.224/28 to another name server. How would I do this?
I am trying to use the ssh reverse tunneling through the command
Code:
ssh -l login -p port <ip address> -R <remote port>:<local Ip>:<local port>
In order to enable some one in the remote host to connect my machine. through the command
Code:
ssh 127.0.0.1:<remote port>
However when I try to execute the first ssh command above I got the warnning
Code:
Warinning: remote port forwarding failed for listen port <remote port>
The problem always happens when the remote host I have tried to connect is my Fedora 14 machine. I can do that when using an Ubuntu as the remote host.
so i start it with ssh -f -R 4096:localhost:22 me@server.com and it comes up and someone can log in at the remote end. how do i close the tunnel from the initiating end ? netstat doesnt seem to identify my end of the tunnel , unless im looking for the wrong thing!
View 1 Replies View RelatedI am looking at using reverse SSH tunnels to manage servers on client sites. I have played around with reverse tunnelling, and have it working on one server back to my middle man server from which I can SSH across from my own PC. All working fine. When I scale this up to 100+ servers reverse tunnelling in, usernames & passwords become a pain, so I'd prefer to use RSA keys instead. My question, finally you might say, is this, to successfully ssh from my PC to the remote server, do the RSA keys need to be on the middle man server as well, or is it just my PC and the remote server?
View 1 Replies View RelatedI config a revers dns im my domain, but him pointer to external server. Check all dns, virtual servers and apache configurations and dont find where it pointer to out. I too check with:
# host -t ptr 4.204.120.64.in-addr.arpa
4.204.120.64.in-addr.arpa domain name pointer srv.businessconnection.com.br. Should point to another server, this no is the correct!
I make equal config another server and work very well, but in this are some erro. Somebody know what I doing wrong?
I am have setup a temporary ssh server to reverse ssh to remote clients. When a client has an issue I have them reverse ssh to my server and then from my laptop or workststation connect to there workstation. The problem that I am having is when I connect to them from behind my firewall from my laptop the connection is really slow but when I connect to them from the firewall it is fast. I am using Firestarter which is simply a GUI for iptables. I am trying to figure out what iptables rule is causing the connection to slow down behind the firewall.
View 7 Replies View RelatedI am currently running 64-bit Windows 7 from my home laptop and I would like to establish an SSH reverse tunnel to my laptop from my work Ubuntu 64-bit machine. I have been reading many "tutorials" that have led me nowhere and I feel as though I'm chasing my tail now. I have done the following on my Ubuntu machine:
Code:
ssh -R 19999:localhost:22 laptop_ip
and on my Windows machine, using putty, did the following:
Code:
Host Name: host_IP
[Code]...
I am able to access my Ubuntu machine when on my work network but there I have been unsuccessful when it comes to trying to remotely access it. I have tried everything that I can think of (though I am a novice). If there is any help/suggestions/ideas that could help, please let me know and don't hesitate to ask for more info!
p.s. I would also like to enable x-forwarding, but for now I would like to have remote access to the Ubuntu machine.
I don't know what the problem is, I followed the instructions here: [url]
But like some other folks there, netcfg usb0 dhcp just eventually times out.
I have an htc evo and fedora 15.
I have looked around and haven't had a lot of luck finding any information on this. I could be blind...but I'm not sure, haha.
I do a lot of remote support for my clients (I do PC repairs and training). I have recently starting suggesting to some of my basic users that they give Ubuntu a try. So far it has been very well received and they are loving it. The problem I am running into is that some of them use laptops in multiple places, and some use routers that are not easily configured. In each case it makes port forwarding a large pain in the behind to allow for remote access.
I have started using the X11vnc reverse connection and it has been working well, except for the fact that it is using high quality color depth (24bit I think?). I know when starting the connection from my end I can set the color depth, but is there any way to set the depth of a reverse connection?
Also, I understand that using just vnc over the Internet is not secure. I need to look into a decent guide to set up SSH tunneling for this. I don't suppose anyone knows of a good guide for 10.04 and 10.10?
p, li { white-space: pre-wrap; } Laptop connects to a (wired) ethernet port on a DLINK DIR-625 wireless router using dhcp. All works perfectly.
Using the same laptop connecting to the same wireless router, but using the wireless adapter and dhcp instead of wired ethernet, I can ping IP addresses on the LAN and also WAN IP's to/from anywhere on the net. I can perform reverse name resolutions (ip to host name), but not forward lookups (host names to ip addresses). I can use the DNS server obtained from dhcp or specify, by ip address, a DNS server to perform the lookups. This makes no difference.
Web pages (LAN server pages or from the internet) are not accessible by site address name or by ip address specifically.
Kubuntu 11.01
$ uname -r
2.6.38-10-generic
$ iwconfig
[Code].....
We have bind 9.3 running on CentOS 5.2. We are able to do reverse lookups for the public IP's but not able to resolve to the private IP's on our network.
View 1 Replies View RelatedI'm trying to access my oracle database (port 1521) from the outside.What I have:Outside -----> Proxy ----> DatabaseWhat I try is to configure a reverse proxy or iptables for accepting connections on port 1521 and transfer them to database. Only one computer of the outside will have access to the database.I suppose than this can be done with iptables or another way.In the real environment proxy will have two nicut for test purposes my computer will have only one (for test purposes, the tree computer will be in the same net)
View 11 Replies View RelatedI'm working on an ADSL2 connection that connects via PPPoE and it is assigned a static IP. On top of the static, the ISP has assigned a small block of 6 useable IP addresses.
- The primary static IP is on the interface ppp0
- The other 6 IPs are configured as eth0:1, eth0:2, eth0:3 etc.
With the above setup all IPs are reachable and useable on the internet.
- The revers DNS has been updated for a few of these and resolves with no problems. ie: eth0:1 has the 123.123.123.123 IP and resolves to blah.host.com and blah.host.com resolves to the IP address.
- To test this I have tried a program like BNC to bind to the IP address on eth0:1 but for some reason when connecting externally the host address is coming up with the FQDN on ppp0 interface IP, not the vhost IP.
Questions is, is this the normal behaviour since its a PPPoE connection and would only work if the ISP supported a bridged connection? something on the ISP end not allowing this to work?
I have an enormous quadcore machine with 16gb ram and dual gigabit NICs. It used to be for MySQL but we have upgraded the whole database infrastructure so now this server is left floating. I had the great idea of turning this into a reverse-proxy (using apache mod_proxy) and it really handles a ton of requests. But I have a feeling that we are not getting the most use out of what it can offer.
Our traffic consists of a few thousand very small (less than 10 byte) ajax calls per second, and frequently I find we are running out of kernel allocated network stack to handle all the requests. Often we get the kern.log warning "possible SYN flooding on port 80. Sending cookies." and other things like this. Obviously we are not getting SYN flooded, we just have very high demand.
So far I have found a few kernel tuning guides to tell the kernel to allocate more of the base system memory for networking but every guide I have found has been for the purpose of increasing the performance between WAN links (direct backbones between offices etc) and usually with very large file sizes being the priority. One such example (and great) write up is here:
cyberciti.biz/faq/linux-tcp-tuning/
I was hoping some people could provide further input, such as along the lines of disabling nf_conntrack (to speed up socket set up/tear down time) or anything that will speed up a high throughput proxy like mine. Any links to studies or benchmarks between different configurations or hardware gets extra points!
I'm trying to configure a reverse proxy for Oracle Database connections. What I have:
Host outside --> Reverse proxy --> Oracle Database
The "Revese proxy" has two IP, one for local and another for outside.I've tried with iptables, but unable.Now I'm trying with "redir".When I do a tnsping database, it works and says OK. But executing sqlplus user/pass@database, it tries to connect but time later I receive a timeout. What i do is a redir from port 1521 in "Reverse proxy" to 1521 in "Oracle database" why this doesn't work or any other way to do it?
I am going barking mad with this - I have forward mapping working fine, but my system simply refused to add in the reverse mapping.Anyway can someone with a clearer head and more knowledge have a look at my configs and see if they can point me in the right direction.I've setup the keys and permissions and they seem to be working, local UNIX file permissions are named.named and even 777Nothing seems to create reverse mappings - no PTR records etc.Weird (I am 99% there to blowing my stack and giving up after 4 days of buggering around).
(A) my dhcpd.conf
==============
authoritative;
[code]....
I am trying to learn dns on my ubuntu 8.When the client tries to register is see the following error in the syslogunable to add reverse map from 10.1.168.192.in-addr.arpa. to tftpadmin-desktop.bbnl.iNot sure where i am going wrong. If somebody can help me out here, that will be a great help.the configurations are as follows
tftpadmin@bbnldmn:/etc/bind$ cat named.conf.local
//
// Do any local configuration here
[code]....
I was wondering if there is any way to enable an MS Windows client that is otherwise unable of joining a domain to join a domain controlled by (open)SUSE? Is that inability only for joining a Windows based domain but a client that runs XP Home Edition or similar domain- incapable version of Windows could join a domain if it was controlled by Linux?Pardon my newbie style, but answer doesn't have to be detailed step-by-step, just yes/no answer with some pointers would do. I am not new to linux but new to network services... search engines weren't friendly when asked this question at the search bar...
View 2 Replies View RelatedI want to give Administrator privileges to Root user in Linux Domain Controller
View 12 Replies View Relatediam using centos5.2.configured qmail,vpopmail. while adding domain form vadddomain<domain.co.in> At first time domain folder get created in domains directory.and also postmaster user also get created by default.And also in mysql. Now the problem is after some times or rebooting system domain get erased automatic.also in /var/qmail/users/assign file domain name get erased.
View 1 Replies View Relatedi had created domain but not getting domain in /var/qmail/user/assign file.also it error /home/vpopmail/bin/vdominfo abc.co.inInvalid domain name
View 2 Replies View Related