Fedora Networking :: Telnet Works External In DMZ Not With Local IP
Jun 8, 2011
I'm running Telnet Server, VFTP, and VNC on a Fedora 14 box. The box's internal IP is 192.168.1.222 This machine is configured to live in the DMZ, The firewall is up on both the router and this box. I can remote in from home using our external IP. I can FTP. I can Telnet. All using our external IP. When i'm in the office, i can remote in using our external IP. I can FTP. I can Telnet. Again, all with the external IP. If i attempt to telnet 192.168.1.222 i get a connection refused. i can ping the 192.168 address
nmap tells me that all 1000 ports on 192.168.1.222 are closed
nmap tells me that my expected ports are open on the external IP.
.... This is a relatively new conundrum as it "used to work", and only appears not to since our last reboot (power outage). I know i have to be missing something simple here, but i differ to the experts.
View 5 Replies
ADVERTISEMENT
Feb 12, 2009
Is it possible to log into a remote windows computer from my local linux computer and vice-versa using the "telnet" command?
View 2 Replies
View Related
Jun 3, 2011
I'm working on setting up access for our developer via Telnet, we are on a local network behind a physical firewall. I set up the standard Telnet service for Fedora15 and from localhost I can login via any user and root.... However I cannot login from another terminal on the LAN, even though I can ping and FTP to the fedora15 box. I added the firewall rules for telnet, that did not work, so I disabled the firewall, still cannot get a connection via port 25. I feel either port 25 is closed in another manor or the telnet is restricted to the localhost.
Also I cannot login to root to configure the Firewall Desktop GUI, only standard users, is this an issue? I also cannot login to the console as root even though I use the correct password.I can only su to root and sometimes it is a PITA. There must be some settings to clear these issues up...
View 2 Replies
View Related
Feb 9, 2010
I am having an issue with my server I have setup. I have apache running and can access the files via all other computers on my network via the ip address i have it set to default to the /var/www folder with index.html as the main file. I am however having issues trying to access it from my other IP the one i found at what is my ip. I have even setup a no-ip address to it. I've forwarded port 20 and port 80 i've even given it the default dmz. I disabled the firewall on my router and I checked and my Ubuntu machine doesn't have a firewall whatsoever i can access my outside ip on the local machine and have access the problem i'm having is trying to access it from anywhere but home. [URL]
View 9 Replies
View Related
May 20, 2011
When I ping a destination IP address, it responds. However, when I try to telnet or ftp or sftp to the same IP address, it does not connect.
I do not know the physical location of the machine.
View 11 Replies
View Related
Jun 17, 2009
Since I installed FC11 I can't get vpnc to work (I always getno response from target").Also I can't ping any external IP even with the firewall disabled.What I see strange is that I had the same configuration in FC10 and the router configuration seems okay to me:
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
10.64.64.64 * 255.255.255.255 UH 0 0 0 ppp0
[code]...
View 3 Replies
View Related
Jan 12, 2010
I can telnet (while on the actual machine) using
Quote:
telnet localhost 25
When I try and use the local machine's ip
Quote:
telnet 192.168.100.9 25
I get
Quote:
Trying 192.168.100.9...
telnet: Unable to connect to remote host: Connection refused
[Code].....
This last one is strange as I the IP looks odd.
What I am doing wrong, and how do I fix it. After much surfing many mosts say that telnet is not used anymore but I want to use it to test my smtp server.
View 9 Replies
View Related
Nov 29, 2008
I have a script which runs a few other scripts (in subfolders of the first script) in order to mount some unix/linux shares) Anyway, when I run the file from rc.local and try to pipe the output into a file the file is empty and the shares are not mounted. however when I run the file it mounts everything.... Also, the script doesn't work on my wireless clients...
View 1 Replies
View Related
Feb 18, 2010
I am trying to find the difference between the above two services. Both are under xinetd and can someone please explain the difference between them (is one more secure than the other one?)
View 1 Replies
View Related
Jul 31, 2010
I've installed Debian inside Virtualbox on Mac OS 10.5.
I want to set up networking so I can (a) reach the outside internet from inside Debian (Virtualbox), and (b) reach the virtual Debian from my Mac. (I don't need to be able to reach the virtual Debian from anywhere but the Mac.)
I can't seem to figure it out. If I set the Virtualbox networking to "NAT", I can reach the outside world from Debian, but I can't reach Debian from Mac OS. If I set the Virtualbox to "Host Link Adapter", I can reach Debian from Mac OS, but I can't reach the internet from Debian.
I'm sure I've set up the way I want before, and I don't remember doing anything special for that, so I must be missing something simple today.
View 3 Replies
View Related
Jan 11, 2010
I've got router with: eth2 - local network (192.168.1.1), ppp0 - uplink (x.y.z.a)
my firewall:
Code:
# Generated by iptables-save v1.4.5 on Mon Jan 11 12:22:25 2010
*raw
:PREROUTING ACCEPT [1038480:666298388]
[code]....
somehow iptables -t nat -A PREROUTING -i eth2 -d x.y.z.a -j DNAT --to-destination 192.168.1.1 helps, but imho there should be some other solution. kernel is 2.6.31.6, architecture is x86_64.
P.S. i've also tried iptables -A POSTROUTING ! -d x.y.z.a -s 192.168.1.0/24 -j MASQUERADE that didn't help either.
View 10 Replies
View Related
Apr 9, 2011
I couldn't find an answer to this question (not including vpn) on different threads so decided to eventually post it, though it's probably easy one. I would like to connect to some application on known IP and port in the internet from my LAN computer. However to do so (I have some application, not any administrative constraints or not being allowed to) I would like to use local addresses. So, let's say - I want to connect to the external host VV.XX.YY.ZZ, port AA using 192.168.EE.FF port BB. Baically so far I have limitation in my application (too many places for possible error, to correct it right now - will change it in future). Is it possible that after my application sends request to 192.168.1.EE port BB, my Linux transparently translates it to VV.XX.YY.ZZ:AA? I tried iptables tutorials and some forums, but nothing seems to be addressing this issue. I don't know if it's event possible with iptables but am pretty sure this should be possible.
View 5 Replies
View Related
May 23, 2011
I have CENTOS 5.4 Installed in one machine and i used Real IP provided by our ISP.My requirements for Mailserver are:
Dovecot
Postfix
everythings done but when i tried to telnet my External IP it giving me an error of telnet connection refused but i can able to ssh to my external IP and also i disabled the firewall but still no luck.
View 12 Replies
View Related
Jul 22, 2010
I seem to having some strange issues with my new sendmail server and was hoping that somebody can offer some assistance with this issue. I recently tried to setup an enviromental monitor that sends alerts via email using a dedicated email account I created on my sendmail server. For whatever reason, it does not seem to be able to send emails, and I have verified the account credentials multiple times.
So I attempted to run a telnet SMTP test to determine what the problem was. I was able to connect and send the emails using this test perfectly fine from my local subnet, however I ran into problems attempting this test from the outside world. When I connect the SMTP PORT 25 from the outside world, I get what seems to be a malformed SMTP greeting.
[Code]....
View 2 Replies
View Related
Dec 26, 2010
install telnet in fedora 14 then how to configure telnet?
View 13 Replies
View Related
Jul 10, 2011
I have a sendmail daemon running on Linux, I can telnet @ port 25 from local shell, however if I telnet from a remote system @ port 25, it doesn't work. There is no firewall in between.
View 3 Replies
View Related
Feb 12, 2011
i write this script:
[Code].....
i make this script to become a service ( i test it from bash, and my script work good), my problem is when i telnet to my local host (127.0.0.1) via a personal port like 5555 telnet give this error: ")syntax error: invalid arithmetic operator (error token is ", i know this error is for echo $(($A+$B)) and i know that telnet can not calculate $A+$B and the error is for this
View 3 Replies
View Related
Jan 5, 2011
I'm trying to use xmms (or any other audio player) lauched from a remote computer but playing locally. I have a maverick server which has xmms installed. I launch an xdmcp (starnetssh) from a windows machine and I am able to open terminals, panels, emacs, etc but when I open xmms (or MOC, is the other one I tested), it simply doesn't play anything unless the same user is logged on the ubuntu box.
View 1 Replies
View Related
May 16, 2010
I'd like a way to see all of the devices on my local network and what their local IP address is. I recall that I used wireshark to troubleshoot a similar problem a while back, but it doesn't seem to have a way to see all of the devices- only the traffic. (I'd like to do this without having to physically interface with my router if possible, and I am in an encrypted network if that matters)
View 6 Replies
View Related
Jun 28, 2011
I have installed a web server on my local network. Everything is well configured and web pages are shown correctly from Internet (outside the local network) using the domain or the public IP.The issue is if I try to see that web pages (using the domain or the public IP) from inside the local network. In that case the router config page (192.168.1.1) is shown instead of the web pages.From inside the local network I'm only able to see the web pages using the internal IP address (192.168.1.XX).
View 2 Replies
View Related
Nov 9, 2009
I'm running a "relatively standard" home network environment. That is, I've got a DSL connection to my ISP, and am running a router/NAT environment that connects a number of machines -- Mac, Windows, and Linux -- to the external network. Internally, all the machines have addresses in the range of 192.168.0.x. However, because of the static/NAT address mapping, the machines whose internal addresses are mapped to external static addresses show up at external hosts as 216.xxx.yyy.zzz (the address range assigned to me by my ISP).
The other machines, which are on the network via NAT, show up as 66.xxx.yyy.zzz, the address assigned by my ISP. Finally, I'm running a local DNS server that handles addressing issues for my domains and sub-domains that are hosted on local machines. All the machines use this local server for their DNS, with my ISP's DNS server as secondary. All of this is to say that it's more or less a pretty typical configuration, and, in general, everything is working fine.
Here's where it gets tricky:
* Machine A is a Fedora 10 linux box, which hosts an externally visible domain and runs, among other things, a web server. It's assigned to one of the addresses that's mapped to a static IP address.
* Machine B is a MacBook Pro, running Snow Leopard (10.6). It typically runs at 192.168.0.6, which is NOT one of the addresses mapped to a static address, but "just" a NAT address.
Now, suppose Machine B hits the web browser run by Machine A: the log files should show the traffic arriving from the local address, 192.168.0.6. However, it instead shows up as coming from 66.xxx.yyy.zzz, the external NAT-affiliated address. This seems wrong, especially since all the other machines on my network show 192.168-type addresses when hitting the web server.
I now change Machine B's address to 192.168.0.5 -- one of the statically-mapped addresses. Browsing traffic is now arriving from 192.168.0.5, which is (I think) as it should be. I now change Machine B's address back to 192.168.0.6. The web traffic on Machine B is now reported to be arriving from 192.168.0.6 -- NOT 66.xxx.yyy.zzz. It's complicated by the fact that I don't know where to look for the problem. All the log files on all the machines seem relatively normal; there are least no glaring problems screaming out from them.
View 1 Replies
View Related
Sep 14, 2011
So I've got a weird issue with my usb external drive. It's a generic enclosure in to which I've mounted a toshiba IDE drive. It appears as "Generic USB to IDE bridge".Said drive works fine on every machine I try to use it on, but NOT my laptop. Oh, it will appear in LSUSB, and in dmesg, (sometimes it appears, but the partitions do not, e.g. I see sdc, but not sdc1 and sdc2).
However, on any attempt to access it (it mounts fine too), Dolphin hangs (and so does most of KDE). I assume a disk sleep is the problem. Unplugging the drive resolves the hang. ages later, the drive will copy bits of data in small spurts, until it hangs for some more time. After a while, I see an ACHI/USB reset message in the system logs, and the drive resumes copying for some more time.
The drive is bus powered, but it doesn't matter if I use one/both USB connectors, and like I said, it works fine on my desktop, which also has SuSE 11.4 on it. Any ideas what's going on? Sorry if I left out some info, I wanted to get this out and let you folks stew over it while I'm running some errands.
View 9 Replies
View Related
Aug 17, 2010
I have this unique situation, I think. My TV plays certain files only through external USB storage. My Ubuntu server stores all of these files on local hard disks. I do not want to buy an external hard disk and then keep moving it between both. Now, strange as it may sound, is it possible to somehow connect my server to the PC and expose a given local hard disk connected to the server, as an external USB drive to the TV?
View 1 Replies
View Related
Dec 2, 2010
Each time I'm moving my new files and directories from my local slackware PC to my NAS (Linux based) in the LAN.
This NAS is 24/7 online and I can access it from the net.More than that it's backed up every day.
I was thinking of making my home directory directly in this NAS.
I didn't made a separate partition for my Home during the installation of slackware in the PC.
View 6 Replies
View Related
Mar 16, 2011
I would like to connect via SSH or similar to my servers located in a remote DC from a laptop running centos5. I normally do this on a puter running dows, and using secureCRT. Just wondering if centos has something built in for this, or if there is some preferably free software I can get.
View 7 Replies
View Related
Mar 18, 2011
I recently picked up an external HD which I partitioned, formatted and can mount just fine under Debian. When I plug in the device, I can see an appropriate sda1 entry for my partition in /dev. However, when I attempt to use the device in Gentoo (the system I bought the drive to back up) it seems to not be recognized. I still get some new entries under /dev when I plug it in, but no specific partition number is recognized. On Debian (where it works) here is the output of dmesg after plugging in the device:
Code:
[ 9179.847274] usb-storage: device found at 8
[ 9179.847277] usb-storage: waiting for device to settle before scanning
[ 9179.848514] usb 5-5: New USB device found, idVendor=059b, idProduct=0070
[ 9179.848520] usb 5-5: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 9179.848523] usb 5-5: Product: eGo USB
[ 9179.848526] usb 5-5: Manufacturer: Iomega
[ 9179.848528] usb 5-5: SerialNumber: 090000000000D517
[ 9184.844890] usb-storage: device scan complete .....
I have to admit that I'm kind of baffled by what is going on here. It would seem that in Debian the drive is initially treated as a cdrom device and then my partition is seen, but the same is not occurring in Gentoo. How I can make the sr0 device work in Gentoo? Am I missing a module?
View 3 Replies
View Related
May 25, 2010
I've got an Ubuntu server hosting our websites and other various things here in our own home. We recently switched to a router that doesn't support loopback (abomination), so I've set up hosts files on our computers so we can access our own sites when on our home LAN.
However, we often take our laptops as we travel about, and I'm guessing due to the hosts files when we try to access our sites, it'll look on whatever local network we're connected to for our server, which won't work, obviously.
Is there a way to set up something like a hosts file that'll only try to look up the local IP of the server when we're on a specific network (our home one), or have one that tries to look for the local IP first, then proceeds to try and resolve the domain name and use the external IP if the local IP doesn't work?
View 6 Replies
View Related
Mar 31, 2009
I tried to authenticate using ntlm proxy authentication service and my computer could not retrive the IP address. Currently I am using fedora cammbridge
View 1 Replies
View Related
Apr 30, 2010
I installed Fedora 12 on my laptop. I have a wireless connection to the internet that works fine, I attached an Ethernet cable from this laptop to a windows machine. There is a green light.
I can ping my localhost. I can ping the windows machine using it internal IP address via the router. However, the eth0 IP address does not work when I ping to it from the windows nachine. Also, I cannot ping to the windows machine using the IP address associated with the Ethernet connection.
View 4 Replies
View Related
Dec 11, 2010
I want to install Globus tool kit it says host name is not FQDN(fully qualified domain name) I tried by installing DNS but it doesnt works
I got the configuration. I have posted in following link. I am not able to reply your post i dont know why. [URL]
View 1 Replies
View Related
