I am trying to have a serial device connect to my ubuntu machine via the com port, and forward that comport over the network to a windows box so that I can configure/access the device. I have looked into socat/ sredird but still haven't found an option that I can get to work.
View 1 RepliesWhen I use the following command:
ssh user@ssh_server -L 5500:localhost:5500 -p 22
everything works fine. I can log in, and local port forwarding is done. Otherwise when I use the command:
ssh user@ssh_server -R 5500:localhost:5500 -p 22
I get an error "remote port forwarding failed for listen port 5500". However when I try remote port forwarding in WinXP by use of putty there is no problem...
We have an existing Windows 2000 network that I am trying to add an Ubuntu 8.04 server to. I have put links into the windows domain DFS to the linux machine's samba shares.
The shares work fine for local users that are physically on the same network (192.168.0.X). Remote users from other offices or dialing in with a vpn client can not access the these particular folders off the DFS. However, they can map them directly from the ubuntu server.
For some reason, all the computers on my network can't reach each other via their host names. For example, the ping command doesn't recognize host names:
Code:
$ ping file-server
PING file-server (208.68.139.89) 56(84) bytes of data.
^C
--- file-server ping statistics ---
20 packets transmitted, 0 received, 100% packet loss, time 19152ms However, ping works fine if I use IP addresses instead. I would put the address for "file-server" in my /etc/hosts file, except for the fact that DHCP changes it's address occasionally.I attempted changing the line
send host-name "<host-name>";
in /etc/dhcp3/dhclient.conf to
send host-name "file-server";
but to no avail.
I just setup a ubuntu 10.10 box learn linux and to play around with, and want it to host my website. I can see the web site on my local network no problem but the outside world gets a time out message. I check to make sure everything is forwarded correctly on my router and the dns so i has to be something in ubuntu blocking out-of-network traffic how do i turn port 80 on to the outside world
View 4 Replies View RelatedI have a subdomain called www3 and I cant see it outside of our network. It's added in vhosts.conf in /etc/httpd/conf.d, and I can access it through [URL], but only when on vpn.
We have another www2 that is both local AND outside the vpn. I am testing the site live and need access to it. Is there another file besides vhosts.conf that I need to add the ssubdomain in? Here's what I added in my vhosts.conf
Code:
<VirtualHost *:80>
ServerName www2.mydomain.com
ServerAlias www2.internal www2
[code]....
Currently I am trying to get some fedora shares to simply connect to each other to access a read-only shared folder on a host machine (no security/encryption even required for these files!). I've tried to get a smb network share going but that didn't work (can't connect with nautilus), I've tried a quick fix with daap and rhythmbox so that they can at least access the music, but rhythmbox fails very miserably trying to connect/create that (and mt-daapd didn't help much) - Basically I get errors saying the host is unreachable.
I haven't even set up a firewall yet for this network and already I'm running into these fundamental problems. Currently I'm using Fedora 15. On a whim I tried the "public" folder and had sharing of the public folder over the network enabled - yep, didn't work (and I certainly didn't expect it to). I would be trying some more advanced CLI stuff, setting up an ssh server or something, but the computer-challenged people who have to access these files just want to be able to click something and have it work.For the operational requirements of this setup, a file synchronisation system would work (although highly inefficient since it would mean gigabytes sent over the network).
I would like to know if there is a fairly easy "How To" for setting up my home network. I have 2 XP SP3 computers and 2 Linux with ver. 9.10. The XP boxes can see each other and share files and folders. I can see from an XP box one of the Ubuntu machines, but can't access any of the files or folders.
I get the following when I try: \Lstoragemusic is not accessible. You might not have permission to use this network resource. Contact the administrator of this server to find out if you have access permissions. The network path was not found.
I will try to explain a bit first about my network typology: I have one cent os 5.5 machine with 2 nics - external one 86.x.x.122 and internal one with 2 IPs: 192.168.1.1 and 89.x.x.121. The ideea is that I have a public subnet (86.x.x.120/29) of IPs which are routable only through 86.x.x.122 so I have a webserver hosted on a different machine with the IP of 89.x.x.122 and GW 89.x.x.121 - everything works perfectly fine, except that I cannot access from the internal network 192.168.1.0 / 24 the so called DMZ (roughly) - the 89.x.x.122.
What really makes me crazy is that I setup the IPtables rules correctly because I can access the webserver from the outside world but I cannot accessit from the internal network...
what I'm missing - why the 192.168.1.0/24 cannot see the 89.x.x.122 machine... What IPtables rules should I add?
I'm trying to implement remote NFS in our network
So I read a lot of posts on the Internet, but I don't understand which ports I have
to open/forward for this.
On some posts I see a lot of ports, I don't want to do this.
If this is the case, and I would set up NFS through an ssh tunnel, then do I only need the ssh port and does this mean it will always work if the server is reachable through ssh?
Or is this wishful thinking ?
I have reinstalled CentOS 5.5 on my un-managed VPS. Everything is fine except port 80
I am trying to access IP address in Internet Explorer but seems port 80 is not accessible.
I have checked by changing Listen 80 to Listen 90 in httpd.conf
and accessed the ipaddress with port 90 i.e. 208.89.213.70:90 and apache page was displayed
I need help on how to resolve this issue
I have had a look at the the information on the ubuntu forum about this but am having trouble getting the server to do what i want it to do.
I have a VPS running ubuntu 9.10 and i am trying to set it up to redirect port 25 to a remote machine via a VPN connection (remote machine connected via VPN)
i have tried setting this up in the firewall using webmin but it is not working.
I've recently installed OpenVPN on my dedicated server (Fedora) in order to have full internet access for all of my WinXP clients. In case somebody is interested in the details of the OpenVPN installation, I followed this documentation: Rootserver-as-OpenVPN-Gateway. The installation runs quire nicely, I'm able to surf the net and even file-sharing programs work on the XP clients - at least to some extent. There is a slight problem though: the file-sharing programs complain that they have a "NAT problem" or that they are "Firewalled".
Most likely, this problem can be addressed by configuring remote port forwarding (RPF) on the server. The only routing rules which I've added on the server during the OpenVPN installation are these:
Code:
# initialize natting for openvpn
iptables -t nat -F POSTROUTING
echo 1 > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o eth0 -s 10.66.66.0/24 -j MASQUERADE
Let's assume a certain application on a client is listening on e.g. port 1234. How do I configure RPF for this port on the server side.
My school computer Crasht, so i thoug hey i wana create a linux server, so do anyone know how to make a Fedora server that can be acest thru the wanport ( acest thru the web ) for sharing school stuff etc ... any one know? or know where i shoud look for manuals?
View 1 Replies View Relatedi have a problem........ How to redirect local http port to remote ip ddress(192.168.10.64) using iptables..my destro is Centos 5.3 my rule is this iptables -t nat -A PREROUTING -s 0/0 -d <my local ip> -p tcp --dport 80 -j DNAT --to-destination 192.168.10.64
View 1 Replies View RelatedI tried to make "ssh tunneling", but failed and got this message.
Quote:
Administrator@windstory-PC /
$ ssh -R 7869:localhost:7869 windowsstudy@192.168.0.4
windowsstudy@192.168.0.4's password:
Warning: remote port forwarding failed for listen port 7869 Last login: Wed Jul 21 01:56:04 2010 from 192.168.0.2 -bash-3.2$
1. system environment
192.168.0.2 - windows 7 + copssh
192.168.0.4 - centos 5.4 x86 + openssh
2. Guide for setting "ssh tunneling"
[URL]
3. Added this to sshd.conf
Quote:
AllowTcpForwarding yes
4. "netstat -na|grep 7869" at 192.168.0.4
Quote:
[root:maestro:~]# netstat -na|grep 7869
tcp 0 0 0.0.0.0:7869 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:7869 127.0.0.1:53539 ESTABLISHED
[code]....
5. result of "ssh -vvv -R 7869:localhost:7869 windowsstudy@192.168.0.4"
Quote:
debug3: authmethod_lookup password
debug3: remaining preferred: ,password
debug3: authmethod_is_enabled password
[code]....
6. I added 7869 for telnet service as follow;
Quote:
mytelnet 7869/tcp # My Telnet server
configure nagios to monitor custom port on a remote linux server..
View 5 Replies View RelatedSo if I do
dmesg | tail and find out that
lp0: using parport0 (interrupt-driven).
lp0: console ready
[root@Juha Juha.Koskiniemi]# cat /proc/bus/usb/devices
What is it fro following?
lspci
00:00.0 Host bridge: Intel Corporation 82855PM Processor to I/O Controller (rev 03)
00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev 03)
00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 81)
00:1f.0 ISA bridge: Intel Corporation 82801DBM (ICH4-M) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801DBM (ICH4-M) IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 01)
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
00:1f.6 Modem: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Modem Controller (rev 01)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility M6 LY
02:00.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev aa)
02:00.1 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev aa)
02:00.2 FireWire (IEEE 1394): Ricoh Co Ltd R5C552 IEEE 1394 Controller (rev 02)
02:01.0 Ethernet controller: Intel Corporation 82540EP Gigabit Ethernet Controller (Mobile) (rev 03)
02:02.0 Network controller: Intel Corporation PRO/Wireless 2915ABG [Calexico2] Network Connection (rev 05)
And how to evaluate the list of cat /proc/bus/usb/devices? I am asking this since seems that parport is recognized but why I can not access the it to via gtkteminal by using /dev/lp0
QGtkStyle cannot be used together with the GTK_Qt engine.
Qt: Session management error: None of the authentication protocols specified are supported
opening failed
How to edit thread header since the misspelling?
Have previously moved my ssh server from 22 to 4455 just by moving the port in sshd_config. This is done to minimize the log entries resulting from brute force attacks.However, it seems like Zimbra and other local services expect to find the ssh service locally available on port 22, so I figured it's better to move the port in the firewall so that it remains configured on port 22 in sshd_config, and instead use iptables with a nat/port rewrite to move 4455 incoming to 22 locally.
Isolated this works as long as I also keep allowing port 22, but the moment I close port 22, port 4455 is also dead, which sort of defies the purpose
I installed ZTE MF 626 modem in my F10 with kernel 2.6.27.12-170, i run usb_modeswitch and so far things happened normally. Watching through /var/log/messages it says that F10 detects two port device for this modem: ttyUSB1 and ttyUSB2, and in the sequence it disable port ttyUSB1 BUT Network Manager still set this port.I mean, when i connect via wvdial appointing to ttyUSB2 i get connection, but Network Manager fails to do it appointing to ttyUSB1. How to change device port in Network Manager?
View 1 Replies View Relatedis it possible using a perl script to test for a socket listening on a UDP port on a remote host ?I work in an environment where netcat is not allowed and from time to time I need to see if a UDP port is open on a remote host.
View 6 Replies View RelatedI'm trying to connect with my server via telnet, but when i sent the command (telnet xxx.xxx.xxx.xxx Port) doesn't works and shows then follow error: Unable to connect to remote host: Connection refused, It happens with any port. Is strange but my telnet services works (telnet xxx.xxx.xxx.xxx), In addition, i tried with firewall enabled and disabled and the problem still happens. My centOS run on virtualbox.
View 3 Replies View RelatedI want to do something that should be simple... NAT a certain port to an IP on my network. *rant about how much I've tried, googled and failed*Our building has assigned us an IP Range (say, 10.0.0.x). They've also provided me with 1 public IP, which they NAT to an IP in that range of my choice (say, 10.0.0.50). I want to NAT port 6500 on that IP, to a different IP's port 80 (10.0.0.51:80) (i.e. come in on 10.0.0.50:6500, forward all the packets to 10.0.0.51:80).I've reset my firewall in Webmin, so it looks like this :Packet filtering : Input (Default Drop)
Code:
AcceptIf input interface is not eth1
AcceptIf protocol is TCP and TCP flags ACK (of ACK) are set
[code]....
I want to do a simple port redirect, i.e. whatever comes trough whatever interface on port AAAA will get redirected to port BBBBI thought that iptables -t nat -I PREROUTING --source 0/0 --destination 0/0 -p tcp --dport AAAA -j REDIRECT --to-ports BBBBhowever it doesn't work, e.g. nc -v -w2 -z localhost AAAA gives:
nc: connect to localhost port AAAA (tcp) failed: Connection refused
while
nc -v -w2 -z localhost BBBB
[code]....
I'm working on getting my myth box hooked up to my Sony flat panel display.Originally the nvidia drivers could not read the EID, so defaulted to only 640x480 over my HDMI-DVI connection.I manually updated xorg.conf with a mode for the resolution I know the thing can handle. Suddenly there are several resolutions avaialble in nvidia-settings and it seems to be communicating with the TV, as it is now listed as a Sony FP display rather than a CRT.I'm able to change the resolution now as expected.my problem, however, lies with the TV itself. I can't seem to get it to actually display the output. I'm able to remote desktop into the box and can see Gnome logged in and everything.However nothing on the TV itself.How do I troubleshoot this? Am I missing something obvious?
View 6 Replies View RelatedFriday night I was working on some networking stuff between my two Fedora 14 boxes. I have my laptop and my desktop. on both machines I have "system-config-firewall 1.2.27" and "iptables" (i believe both come standard on F14?) I kept getting the same message as seen below before realizing perhaps I should check my firewall!
I added a rule for incoming and outgoing traffic on port 22 and was able to get in with no problems at all! however today I can't ssh into anything... I can't use "Remote Desktop Viewer 2.31.4" to vnc into the machine anymore. I can't remember the exact error message at this time, it's something close to "Connection was terminated" or "Unable to connect" I can update this message later.
last night I foolishly uninstalled the system-config-firewall and then uninstalled iptables to see if it was a simple firewall issue.... totally hosed my system <insert smiley!>
After reinstalling and realizing I didn't backup my documents <insert smiley!...again...> I started reinstalling all of my applications. I'm still unable to use ssh and I've tried to ssh my own computer.
Is this possible?
# ssh 127.0.0.1
ssh: connect to host 127.0.0.1 port 22: Connection refused
I have Ubuntu 10.4 Server, it's a local intranet server in back of a router in a "standard" home network. As I understand it laptops, PCs and the server are "hidden" from direct contact with the internet by Network Address Translation [NAT]. The router is a Linksys WRT54G all clients are connected to it, and the router itself is connected to a modem provided by the ISP. The server was given a static IP address. To admin the server I connect from a local client with SSH and get a command-line.
Is there a way to admin the server if I am a thousand miles away from this local network? Putting it another way, Is there a way to "tunnel" through to the server, give the user/pw and get a command-line from the internet? What software or hardware is needed?
I hope someone can help me as I am new to Linux and Ubuntu. I am running Ubuntu 11.04 and am trying to get VPN working properly with the pptp protocol. It is connecting but I cant seem to view folders or start a RDP session. I have tried this out with a Windows and a Linux machine and both work. The Linux machine was running Mint 10, in the vpn configuration I had set the gateway, user and pass, then in advanced mschap and mschapv2 were selected as well as mppe, allow bsd, allow deflate, and use tcp header. These settings work fine with Mint but its not working for me using Ubuntu. I did try to ping, sometimes it works sometimes it wont.
View 1 Replies View RelatedI have just installed Ubuntu 11.04 and the Cisco VPN client with :
apt-get install network-manager-vpnc
I have imported the PCF provided by my employer into the GUI. The group password also seems ok, when I login to the VPN server, I am provided with the "VPN Login message". (On Windoze, I get an Ok/Cancel popup with the same message). In Ubuntu, I don't get to click "Ok" but it looks like I'm connected properly. The /var/log/syslog file contains numerous static routes added, 30 or so. After the Login Message, I see the couple of line:
Jul 8 12:40:51 ubuntu02 vpnc[1613]: can't open pidfile /var/run/vpnc/pid for writing
Jul 8 12:40:52 ubuntu02 NetworkManager[630]: <info> VPN connection 'VPN to my network' (IP Config Get) complete.
I get an IP from the external network correctly as well:
tun0 Link encap:UNSPEC HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00
inet addr:172.16.10.170 P-t-P:172.16.10.170 Mask:255.255.255.0
However, I cannot ping any of the machine on the remote network. None of the network services seems to be accessible. Why the machines on the VPN are not accessible?
I'm have a base level understand of linux at this point. I have Debian box that I am trying to do some port redirection with.
I have my external NIC as eth0 with an IP of x.x.250.5.
I have my internal NIC as eth1 with an IP of 192.168.1.1.
On the internal network I have a NAS box with a web interface at 192.168.1.100. What I need is to set it up so that a request to x.x.250.5:8080 will some how forward/redirect to the internal network NAS box at 192.168.1.100:80.