Ubuntu :: Change VNC Server Listen Port?
Dec 30, 2010
I wish to use the VNC server built in to the Ubuntu to easily access it from other computers on my local network. I need to skew the VNC Server port off of the normal 5900 to something else because I am using VNC to access several computers (sometimes simultaneously) so each VNC server needs to be set with a different port #. At this point it is all local subnet connections with no incoming internet access and I am not worried about security.
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Apr 6, 2010
How can I set my server to listen at a different port for http access. I would like to use port 8080 (to circumnavigate isp blocks). Also can I do the same thing for sftp connections?
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Mar 1, 2010
I was just wondering what I have to edit in order to get Maia Mailguard to listen on port 443 instead of port 80
right now I am logging on with [URL] but I would like to connect to [URL]
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Aug 7, 2010
When 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...
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Jul 20, 2010
I 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
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Feb 12, 2009
I make an application on GNU/Linux which listening on a MULTICAST stream, so I open my unconnected socket, bind it on a MULTICAST address and a port, join the multicast group with the "setsockopt (IP_ADD_MEMBERSHIP)", then I receive datagram on my socket.
Now I've two different instances of the same application that run with their own MULTICAST address and port. And what I found strange is that, after a misconfiguration, I switch the ports, for example:
Emitting on 225.0.0.1/23451 and 225.0.0.2/23452
Receiving on 225.0.0.1/23452 and 225.0.0.2/23451
And my receiving part doesn't care about the MULTICAST address, it looks like the socket is listening on the port number only! I mean that the receiver [225.0.0.1/23452] take its datagrams from emitter [225.0.0.2/23452] and vice-versa!
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Oct 21, 2010
VERY new to linux, erm but I have an issue that needs solving!I recently moved to university, where their network blocks sftp port 22, this means that I cannot connect to my FTP server which is running a version of linux.Now I've got this ftp server connected to a seedbox and it was created using the following walk through..Code:I have written this guide for a friend, but I though it would be useful for others as well.
There are several guides floating around, but I found that most always cock up in some way. This one is tried and tested to work on Debian Etch (on an OVH rps, but should apply to most servers).If there is a new stable release of rtorrent/libtorrent then I will update this guide to show you how to update it (without reinstalling the whole server).
At the bottom there are also instructions to install ftp access & some network monitoring software.Basically, I would really like someone to be able to construct the commands on how to change the listen port for sftp connection on linux or add another port to the list that Linux would use so that I could put in through putty.
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Apr 6, 2011
I edited "sshd_config" file and changed port 22 to a new port. After I restart ssh, it listens on port 22 and the new port. How can I disable SSH to listen on port 22? I'm using Debian.
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May 23, 2010
I'm running Ubuntu 9.10, and am trying to get proftpd to listen on a port other than 22. I've modified the proftpd.conf file, as well as adding the desired port to my /etc/services file, yet if I try anything other than port 22, the connection is refused.
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Feb 6, 2011
It appears that X Windows under Ubuntu (or Gnome?) is started to listen to a Unix named socket, instead of a TCP port number, for client connections. That's what SSH is forwarding when it does X forwarding. I need to start X applications on a remote machine, and then close the SSH connection. So I need to make the connections directly. This is within a LAN on private IPs, so security is not an issue. I searched on help.ubuntu, but there appears to be no particular document that covers this. Anyone know where this is configured to enable it to listen on a TCP port like the usual 6000?
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Jan 16, 2011
I just installed KVM on a new system and just found out the hard way that virt-manager cannot be installed on the same machine because of a library conflict, so I will have to manage my VMs from another machine. I will use a SSH tunnel to forward the port, but I don't know what it is. Also, how do I start KVM?
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Apr 16, 2011
I would like to listen to a virtual serialport (dev/ttyACM0). I heard you can this with the terminal in Linux. But how? Does anyone know some commands?
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Aug 20, 2009
Can't seem to access my squid server on port 80. I have port 80 allowed in the conf for this IP. apache is listening to port 80 but only on the 2nd IP. iptables is allowing through port 80 incoming nmap shows no ports open on 80 though:
Code:
Starting Nmap 5.00 ( http://nmap.org ) at 2009-08-20 11:19 BST
NSE: Loaded 0 scripts for scanning.
Initiating SYN Stealth Scan at 11:19
[code]....
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Apr 14, 2010
I've killed apache via /etc/init.d/apache2 stop, but something is still listening on port 80:
Code:
root@www:/etc/apache2/sites-enabled# netstat -an | grep LISTEN | grep 80
tcp 0 0 0.0.0.0:80 0.0.0.0:* LISTEN
tcp 0 0 127.0.0.1:8022 0.0.0.0:* LISTEN
unix 2 [ ACC ] STREAM LISTENING 5806 /var/run/mysqld/mysqld.sock
How do I find out that program this is?, or how to I stop it listening?
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Jan 30, 2010
I tried searching and tried different things and have failed miserably. What I am trying to accomplish is have postfix listen on port 587. I have read that I should do this using Linux Firewall rules as to not mess with postfix config. Here's what I have in my ip6tables.
Code:
iptables -t nat -A PREROUTING -p tcp --dport 587 -j REDIRECT --to-ports 25 However, when I restart ip6tables I get unknown arg --to-ports
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Aug 29, 2010
On Fedora 13 is there anywhere else on the system that I have to change to get Apache to Listen to an assigned port, something other than 80. Suppose for instance I wanted Apache to Listen on port 94. I told by the site that their router is forwarding apache to port 94. That doesn't mean I change the Listen in httpd.conf. correct. Apache is still expecting connection on port 80 but in this case 80 then gets forwarded in the router to 94. This is my understanding.
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Sep 21, 2010
How do i change the ssh port on my redhat 5 server. Can you tell me how to do it through the gui and through cmd line?
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Feb 9, 2010
I want to change my ssh port from the default 22 to something else. I did the following: vi /etc/ssh/sshd_config; uncommented Port 22 and changed it to the desired port number. After that I run service sshd restart for the change to take an effect. Now, when I want to login into the new port I receive this message - Network error:Unable to route to host. When I change the port back to 22, I will be able to login again.
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Mar 10, 2010
i need to change ssh port on the servers including centos and ubuntu when i make changes to /etc/ssh/sshd.config and change the port to something else restart sshd then i can determine that port 22 is not working but ssh does not connect to new port it says "no route to the host"
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Apr 26, 2011
When i setup snort default listen on eth0, now i want change to eth1 set default listen interface.
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Aug 4, 2011
currently i want to configure sendmail port number 25 im using these port numberalready how can i chage my senmdail port no.
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Jan 31, 2010
I have scalix (sendmail) installed on my server and it is working very good but I need to change the smtp listening port because I am thinking that my sendmail is being used as a spam engine.
what/how I need to configure in order to change the smtp port?
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May 14, 2010
iSCSI Server, can I change the default port 3260 to other port ?
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May 2, 2010
I have a mail server i need it to send message via port 587 not port 25, i make some changes to my postfix server which i use and it is already successed making a telnet to 587 port like it :
[Code]....
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Nov 2, 2010
I am trying to figure out how to turn my 10.10 server into a listener only. I have it set up using snort/acidbase. It is grabbing my network traffic just fine. I want to now set up a second server to hold all the data it collects. I need to change the snort server so it only listens. I disabled ping responses, but I want to go farther than that. I want to disable responses all together. I want it to only grab the data and store it.
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Nov 23, 2010
I'm getting some problems setting up a Postgresql-8.4 server (using Debian Lenny).
After have installed the PGSQL server, I've changed the following files as bellow code...
If you encounter this message, please check if the server you're trying to contact is actually running PostgreSQL on the given port. Test if you have network connectivity from your client to the server host using ping or equivalent tools. Is your network / VPN / SSH tunnel / firewall configured correctly?
For security reasons, PostgreSQL does not listen on all available IP addresses on the server machine initially. In order to access the server over the network, you need to enable listening on the address first.
For PostgreSQL servers starting with version 8.0, this is controlled using the "listen_addresses" parameter in the postgresql.conf file. Here, you can enter a list of IP addresses the server should listen on, or simply use '*' to listen on all available IP addresses. For earlier servers (Version 7.3 or 7.4), you'll need to set the "tcpip_socket" parameter to 'true'.
You can use the postgresql.conf editor that is built into pgAdmin III to edit the postgresql.conf configuration file. After changing this file, you need to restart the server process to make the setting effective.
If you double-checked your configuration but still get this error message, it's still unlikely that you encounter a fatal PostgreSQL misbehaviour. You probably have some low level network connectivity problems (e.g. firewall configuration). Please check this thoroughly before reporting a bug to the PostgreSQL community.
This is the same configuration that I have in other Lenny server, which works well.
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Oct 4, 2010
so i set out to change the default smtp port the server uses because my ISP blocks port 25 and i need the email to work in outlook. this morning i could receive email, but not send it. so i did some research and thought that i needed to edit the master.cf file in /etc/postfix/ by commenting out this line: smtp inet n - n - - smtpd -oand replace it with587 inet n - n - - smtpd (587 being the port i want to use)somewhere along the lines postfix server stopped running and now i cannot get it to start.if i try using SSH it crashes immediately and if i restart it in simple control panel nothing happens
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Aug 14, 2009
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?
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Dec 5, 2009
I'm running ubuntu 9.10, the box has 2 network interfaces. I've got rsyslogd running on this box also. On one of the interfaces I have a VoIP ATA which I've configured to send syslog messages to the ubuntu box, however they're not coming up in the log file (I've configured syslogd.conf to capture logs for local2.debug and local3.debug).
rsyslogd seems to be working ok for data coming through on the other interface, but not this one. I've verified the ATA is sending data by using tcpdump and have confirmed it's using local2.debug and local3.debug. It seems perhaps it might not be listening on all interfaces? rsyslog is running with the -c4 switch.
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Apr 15, 2010
Client unable to listen to NIS domain server.I have configured an NIS server, which is working fine.I then configured an NIS client to share some like passwd, shadow, etc.By default the client was trying to communicate to the NIS server using the broadcast method..However if I restart the client computer, it fails to communicate or Listen to the domain server. Once I login to the pc, I then check the /etc/yp.conf file and it switched back to the broadcast method.Is there any way that I can make this entry: domain naman.com server station51.naman.com permanent so that even after the reboot it should communicate using the client-server connection rather than the broadcast connection.
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