[CentOS] VNC

Fri Oct 11 23:36:34 UTC 2013
Terre Porter <tporter at webpage-builders.com>

Humm,

Could windows machine be blocking the port going out? 

If your using putty as a ssh client you could try to port forward (5901,
5901) through the ssh session and then try to connect using localhost:5901
or localhost:5902 on the windows machine and see if you can connect.

It can be done with other ssh clients but I've only used putty, so I know it
can be done with it.

You might also compare some of the settings to this page
http://wiki.centos.org/HowTos/VNC-Server

You could try stopping the servers and running the vncserver in the console
to see if there are connections or errors - but I'm not sure with the
configuration your using if that is possible.

I'm not sure what else to offer.


-----Original Message-----
From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On Behalf
Of Larry Martell
Sent: Friday, October 11, 2013 7:13 PM
To: CentOS mailing list
Subject: Re: [CentOS] VNC

On Fri, Oct 11, 2013 at 4:45 PM, Terre Porter
<tporter at webpage-builders.com>wrote:

> You can specify the port with the IP by using the colon with the ip.
>
> x.x.x.x:5901 or x.x.x.x:5902
>

Those both give me connection refused (as opposed to without the port, where
I get connection timed out)


>
>
> -----Original Message-----
> From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] On 
> Behalf Of Larry Martell
> Sent: Friday, October 11, 2013 6:35 PM
> To: CentOS mailing list
> Subject: Re: [CentOS] VNC
>
> On Fri, Oct 11, 2013 at 4:26 PM, Terre Porter
> <tporter at webpage-builders.com>wrote:
>
> > The instructions out linked to has a type-o at the end says to 
> > connect to
> > ip:5801 should be 5901.
> >
> > If your using a vnc client uvnc,  tightvnc..  try using just the ip 
> > without the :port part or :1 for the 5901.
> >
>
> I am unfortunately connecting from a windows box that I do not have 
> admin rights on.  I have to use the client provided, which is RealVNC 
> Viewer. All I can do is give the ip.
>
>
> > Try  lsof -i -P | grep -i "listen"
> >
> > To see what ports are listening...
> >
>
>
>  [root at 10 sysconfig]# lsof -i -P | grep -i "listen"  | grep vnc
> Xvnc      22052   motor    4u  IPv4 527366      0t0  TCP
> localhost.localdomain:5901 (LISTEN)
> Xvnc      22286   motor    4u  IPv4 530145      0t0  TCP
> localhost.localdomain:5902 (LISTEN)
>
>
> >
> > -----Original Message-----
> > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org] 
> > On Behalf Of Larry Martell
> > Sent: Friday, October 11, 2013 6:05 PM
> > To: CentOS mailing list
> > Subject: Re: [CentOS] VNC
> >
> > On Fri, Oct 11, 2013 at 3:42 PM, Terre Porter
> > <tporter at webpage-builders.com>wrote:
> >
> > > Try this, iptables dump from my fresh install, with ssh allow and 
> > > the vnc you referenced.
> > >
> > > Terre
> > >
> > > # Generated by iptables-save v1.4.7 on Fri Oct 11 17:39:52 2013 
> > > *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT 
> > > [45:7091] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT 
> > > -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p 
> > > tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -m 
> > > state --state NEW -m tcp -p tcp -m multiport --dports
> > > 5901:5903,6001:6003 -j ACCEPT
> > > -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD 
> > > -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on 
> > > Fri Oct 11 17:39:52 2013
> > >
> > >
> > OK, with this file I'm getting connection timed out - before I was 
> > getting connection refused so I guess that's some progress.
> >
> > >
> > >
> > > -----Original Message-----
> > > From: centos-bounces at centos.org [mailto:centos-bounces at centos.org]
> > > On Behalf Of Larry Martell
> > > Sent: Friday, October 11, 2013 5:36 PM
> > > To: CentOS mailing list
> > > Subject: Re: [CentOS] VNC
> > >
> > > On Fri, Oct 11, 2013 at 3:30 PM, Earl Ramirez 
> > > <earlaramirez at gmail.com
> > > >wrote:
> > >
> > > >
> > > > On Fri, 2013-10-11 at 15:18 -0600, Larry Martell wrote:
> > > > > I'm trying to set up a VNC server using the instructions at
> > > > >
> > > > http://www.techrepublic.com/blog/linux-and-open-source/linux-101
> > > > -e
> > > > as
> > > > y-
> > > > vnc-server-setup/
> > > > > .
> > > > >
> > > > > I am up to step 6:
> > > > >
> > > > > Step 6: Edit iptables
> > > > >
> > > > > In order for the VNC connections to get through, you must 
> > > > > allow them with iptables. To do this, open up the file 
> > > > > /etc/sysconfig/iptables and add
> > > > the
> > > > > line:
> > > > >
> > > > > -A INPUT -m state --state NEW -m tcp -p tcp -m multiport 
> > > > > --dports
> > > > > 5901:5903,6001:6003 -j ACCEPT
> > > > >
> > > > > Save the file and restart iptables with the command:
> > > > >
> > > > > service iptables restart
> > > > >
> > > > > When I issue the restart command I get:
> > > > >
> > > > > iptables: Applying firewall rules: iptables-restore: line 1 
> > > > > failed
> > > > >
> > > > > [FAILED]
> > > > >
> > > > > Note that I did not have an iptables file before but there is 
> > > > > an iptables-config file.
> > > > >
> > > > > Can someone help me complete this configuration.
> > > >
> > > > Can you post the content of the file, I just edit the config 
> > > > file and I didn't get any errors when I issue the command
> > > >
> > > > $ sudo /sbin/service iptables restart
> > > >
> > > >
> > > As I wrote, there was no iptables file. I created one with just 
> > > that one
> > > line:
> > >
> > > -A INPUT -m state --state NEW -m tcp -p tcp -m multiport --dports
> > > 5901:5903,6001:6003 -j ACCEPT
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