Fedora Networking :: Set Reverse Dns For IP?
Feb 28, 2009how 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.
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Fedora Networking :: Ssh Reverse Tunneling Failed?
May 7, 2011I 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.
Fedora Networking :: Reverse Usb Tethering Android Device With 15 ?
Sep 2, 2011I 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.
Server :: Bind Reverse Zone : No Name With Reverse Lookup
Oct 12, 2009I 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]....
Networking :: Set Up Reverse DNS To Domain?
Sep 12, 2010I 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 Replies View RelatedUbuntu Networking :: Reverse SSH Tunneling
Feb 2, 2011I 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 RelatedNetworking :: Bind9 : Reverse Lookup And PTR Value?
Oct 23, 2009I 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.
Networking :: Forward Reverse Dns Subnet?
Mar 25, 2010I 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?
Ubuntu Networking :: Closing A Reverse SSH Tunnel?
Jan 31, 2010so 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 RelatedNetworking :: Multiple Reverse SSH Tunnels For 100+ Servers?
Jul 26, 2011I 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 RelatedNetworking :: Reverse DNS Pointer External Server?
Dec 9, 2010I 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?
Networking :: Reverse Lookup Fail For Another Domain?
Jun 3, 2011I'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.
Networking :: Reverse SSH Connection Super Slow?
Dec 3, 2009I 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 RelatedNetworking :: Reverse SSH Tunnel Ubuntu And Windows 7?
Oct 3, 2010I 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.
Ubuntu Networking :: 10.10 Reverse X11vnc Color Depth Changes?
Nov 15, 2010I 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?
Ubuntu Networking :: WLAN0 Will Do Reverse Dns Lookups But Not Forward
Jul 17, 2011p, 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].....
Networking :: DNS Reverse Lookups Not Working For Private IP Addresses / Fix It?
Jul 13, 2011We 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 RelatedNetworking :: Iptables Or Reverse Proxy For Oracle Database?
Feb 15, 2010I'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 RelatedNetworking :: Vhost With Reverse DNS On ADSL2 Connection Not Binding
Mar 22, 2010I'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?
Networking :: Tuning For High Throughput Reverse-proxy Server?
Jan 18, 2011I 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!
Networking :: Configure A Reverse Proxy For Oracle Database Connections?
Mar 4, 2010I'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?
CentOS 5 Networking :: BIND / DynamicDNS / DHCP - Unable To Add Reverse Map?
Jul 14, 2009I 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]....
Networking :: Unable To Add Reverse Map From 10.1.168.192.in-addr.arpa. To Tftpadmin-desktop.bbnl?
Nov 9, 2010I 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]....
Fedora Servers :: Reverse The Proxy With Squid?
Mar 14, 2011I have a reverse proxy set up with squid. I'm going to try and explain what it's doing and I apologize for it being confusing, I'll do the best I can to describe my problem. First, it's for our phone system. We run a ShoreTel Voip system. The owner has decided he wants me to setup MCM (Mobile Call Manager), which from what I can see is an under developed, and almost impossible to get help with Shoretel software. But he's convinced he needs it for his Iphone. It's supposed to, in a nutshell, turn his Iphone into his work phone with all the advantages and doodads that come with it. Apparently, "they have an app for that". On the server side, I need to setup a reverse proxy back into the network on our phone server. Simple enough, I did this with squid. I used the following lines:
Code:
http_port 80 accel defaultsite=172.17.137.7
cache_peer http://172.17.137.7 parent 80 0 no-query originserver name=myAccel
acl our_sites dstdomain http://172.17.137.7
[code]....
Code:
always_direct allow all It most definitely is allowing traffic back to the phone server, the problem is, it hands out my internal server address to the outside client. So for instance, if I connect to the outside routable address with my phone, it will immediately change the url to http://172.17.137.7 which is the inside nat address of my phone server. Which of course doesn't work, since I couldn't browse to that address from the outside. It does however work from the inside of the network, obviously because 172.17.137.7 is accessible from the inside.
Fedora Security :: Sshd Reverse The Tunnel Info?
Feb 18, 2011I have an sshd server up and running (F13 64bit) I'd like to connect to a pc that's behind a firewall using ssh tunnelling, so I have something like
ssh -R 1234:127.0.0.1:22 myuser@mypc
then from mypc I can succesfully login to the remote pc. I have just une question. How can I list the ssh active connections and the forwarded ports ?
I've only got to
netstat -tunva
but this returns only (filtered)
tcp 0 0 127.0.0.1:1234 0.0.0.0:* LISTEN
tcp 0 0 ::ffff:172.16.0.XXX:22 ::ffff:172.16.1.XXX:60744 ESTABLISHED
Now I know that the first is the tunnel end but how can I connect the two lines if I don't know the port number (ie: someone else estabilieshes another tunnel)
General :: Ubuntu 9.10 Networking Hostname / Can Ping The Linux Box Using Its Hostname From A WinXp. But Cannot Do The Reverse?
Jan 3, 2010I have a network of 2 WinXP machines and one linux box. I have fiddled around with the settings as you do when learning. The network is working. The network neighbourhood on the WinXP machines recognise the linux box and vice versa, (the linux Places|Network recognises the 2 WinXP). I can Ping the linux box using its hostname from a WinXp. But I cannot do the reverse. I get an 'unknown host' response. I can ping the linux to itself using its hostname.
View 7 Replies View RelatedUbuntu Networking :: Reverse Ethernet Cable Setting Between 2 Ubuntu?
Jul 27, 2010I have a reverse ethernet cable and I want to use it to connect a desktop 10.04 Lucid + laptop 10.04 Lucid
How do I do this ? I have no routers, no hubs. This is so I can transfer HD ISO backup files.
Networking :: Static IP Address That Has A Reverse Lookup To "myipaddress.static.lyse.net" And Not Email Domain?
Apr 26, 2010I 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 RelatedProgramming :: Reverse Dns Lookup In C?
Sep 27, 2009Reverse dns lookup in C?
View 3 Replies View RelatedUbuntu :: Use Of Implementing A Reverse Proxy?
Feb 13, 2010What is a Reverse Proxy? And what is the use of implementing a Reverse Proxy???
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