General :: How To Check Port 3306
Mar 10, 2010How do I check port 3306 to see if it is being used? I am unable to get MySQL to run with a LAMPP 1.7.3a installedon Ubuntu 9.10. The Apache server and ProFTPD start fine.
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General :: Connecting To Mysql Database Remotely Via Port 3306 ?
Jul 23, 2011I'm new to linux, and setting up the mysql database server.
Here are my situation:
OS: CentOS 6
mysql version: 5.5
I tried to use MySQL Administrator to connect to my database on the host 192.168.1.120
and my computer is under the same network with ip: 192.168.1.105
But it shows the error msg: Could not connect to MySQL instance at 192.168.1.120
Error: Can't connect to MySQL server on '192.168.1.120'(61)(code 2003)
On the server side I've tried:
Code:
skip_networking is off and I've set the port for it.
When I check the process in OS:
Code:
When I try netstat:
Code:
I thought it's the problem of firewall, so I have check it also:
Code:
Debian Configuration :: Mysql Port 3306 Not Visible?
Sep 3, 2010Everything default.Everything works nicely with one exception. I can't connect to MySQL from the network.nmapping localhost tells me 3306 is open but nmap from the outside shows only ports 22 and 111 open. To my knowledge I have no firewall, iptables -L gives an empty set.I have several similar installations on the same network without any problems of this nature.
View 2 Replies View RelatedUbuntu Networking :: Cannot Connect To MySQL (3306 Port)?
Jan 14, 2010How do I get mysql 3306 port to be seen on my network?
Here is my setup:
---Desttop - WIndows Vista Ultimate (192.168.0.101)
--------VBox
------------Guest - Ubuntu 9.10 (Joomla CMS Development) (192.168.56.106)
---Server - Ubuntu 9.10 (192.168.0.100)
--------VBox
------------Guest - Ubuntu 9.10 (Joomla Production) (192.168.56.104)
------------Guest - Ubuntu 9.10 (MySql Database) (192.168.56.105)
I can ping all OS from any OS, I can connect to a shares, I can connect to the web server. I can do a netscan and display the open ports and the services for those ports except for MySql. How do get MySql to showup, so I can connect to it from my Joomla CMS? I came from openSuse and I like how they have modules to do this automatically. What do I use with Ubuntu to get the same results?
Ubuntu Networking :: Unable To Open Port 3306 For MySql
Jul 18, 2010I've been working and researching this for about a week now and I still haven't had any luck. Basically, I have been trying to open port 3306 to allow connections to my MySql server.
i've added the rule into iptables, saved and restarted that i've added the rule into my router. and I have removed "skip-networking" from the my.cnf file and added the blind address in, I'm trying to get this all to work on my LAN, but it doesn't seem to work, I've also restarted the entire server and then port scanned it from outside and inside the networking and it still tells me that 3306 is closed.
I did however i had some luck when I entered the Ip of the machine that would be sending data to the server but then PROFTPD stopped working and the port was open :/ im not really sure what ip should be in there but another thread from another forum said to enter the ip of the machine that mysql is installed on.
so currently its 192.168.0.2 which is the static internal address of the server.
every machine on the network has a static ip and all the rules have been added to each firewall, i.e. server and router firewalls.
ill pop my "my.cnf" under this to see if anyone can find a mistake,
Code:
# This will be passed to all mysql clients
# It has been reported that passwords should be enclosed with ticks/quotes
# escpecially if they contain "#" chars...
# Remember to edit /etc/mysql/debian.cnf when changing the socket location.
[Code].....
CentOS 5 Server :: Changing Default Mysql Port As 80 From 3306
Feb 2, 2009I want to change my MySQL default port(3306) as 80 how can i do this on centOS 5.2? I tired to add
[client]
port=80
to /etc/my.cnf and different command in this file. But mysql didn't start. How can do this? I'll use server only as mysql and ftp server.
Red Hat / Fedora :: Enabling Mysql In Server (port 3306) It Doesn't Work?
Apr 12, 2011when i am enabling mysql in server (port 3306) it does'nt work. but when i execute iptables -F it works what may be the reson?
View 6 Replies View RelatedServer :: Mysql In Redhat Two Machine Cluster Not Opening 3306 Port?
Jul 18, 2011Im having a frustrating issue with my two machine cluster I setup using Conga. Everything was working great except now when lucci starts mysql the port (3306) is never opened to outside machines. I can do a "ps -ef | grep mysql" and see it running as well as login to mysql on the node it is running on - but an nmap of the machine does not show the 3306 port and I cannot login to mysql remotely and yes I turned off all iptables(iptables,ip6tables) and SElinux is disabled.What am I missing here? If I start mysql on my own (and it is using the same my.cnf as lucci is) it does show the port open and works perfect,t for some reason when lucci starts it, no dice
View 1 Replies View RelatedSecurity :: Iptables: Verify Traffic On Port To Check If It Is Legitimate For That Port?
Apr 18, 2011Is there any way to verify if packets being trafficked over a certain port are valid for the service you want to use this port for?
One obvious example that probably clarifies my question:
When I open port 443 (outgoing or incoming) for https/ssl traffic, I don't want this port to be used for say openvpn traffic.
Thus: when someone wants to surf to a website with https, it should be ok but if someone wants to connect to his home openvpn server over that same port, it should be blocked.
Networking :: How To Check What Program Is Using Port
Sep 6, 2010I want to check what program is using some ports. I have
Code:
netstat -a | grep localhost
tcp 0 0 localhost:58935 localhost:www ESTABLISHED
tcp6 355 0 localhost:www localhost:58935 ESTABLISHED
udp 0 0 localhost:53888 localhost:53888 ESTABLISHED
I try ps aux | grep 53888. What other command can I use?
Ubuntu Servers :: Check If A Port Is Open For A Ip?
Sep 8, 2010Is it possible to check if a particular port is open for a particular ip in the terminal?
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Oct 20, 2010I would need to monitor the status of an electric relay. To do so I was thinking the serial port and perl (as I don't know C ) how to check if a switch connected to a serial port is open or closed. Here is my plan, I'll plug a electric relay on the electric network and monitor the state of the switch. if the switch is closed, that mean that we are on the electric network if the switch is open that mean that we are on our diesel power generator.
PS: There will be no voltage input involve (although I can if that's required)
I'm planning to use this with Nagios to know if we are on the electric network or on our diesel power generator.
Security :: SSH Time Out On Login Attempt From Remote Box: Command Needed To Check Port 22?
Dec 1, 2010I have set up a user to login remotely to our Red Hat 5 server via SSH. A rule in our department firewall enables this user to login from a single static ip address. The ssh port on our server is 22. I am able to login to port 22 from locations within our department firewall. Our administrator says the firewall configuration is unchanged. The remote user had been successful logging in. But now the remote user gets a Connection Timed Out message, before being asked to authenticate by the server.
I regenerated security keys, but the remote user still gets the connection timed out message. (I can login locally with the new keys). I suspect either a firewall or an authentication problem--inclining a firewall problem. Am I correct? Is there a Linux command to check whether port 22 is available or blocked, prior even to authentication, for login from the user's remote location?
Ubuntu Networking :: Make 127.0.0.1:3306 Redirect To A Remote Mysql Server?
Mar 22, 2010I'd love a hint or two on the following problem. I've set up iptables rules to forward all connections to port 3306 to a non-standard mysql port on a remote server. This works, except that I need to deal with the loopback interface in a special way and I'm stuck.
Code:
iptables -t nat -A PREROUTING -p tcp --dport 3306 -j DNAT --to 128.XXX.XXX.XXX:3197
iptables -A FORWARD -p tcp -d 128.XXX.XXX.XXX --dport 3197 -j ACCEPT
iptables -t nat -A POSTROUTING -j MASQUERADE
Since locally-generated packets will never hit the PREROUTING rule, you'll need to setup a near identical rule using OUTPUT to make it work. Here is what I've tried:
[Code]...
General :: SFTP Server Port Blocked On Uni Network / Need To Change Listening Port
Oct 21, 2010VERY 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.
General :: Warning: Remote Port Forwarding Failed For Listen Port 7869
Jul 20, 2010I 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
Fedora Networking :: Port Redirect, I.e. Whatever Comes Through Whatever Interface On Port AAAA Will Get Redirected To Port BBBB?
Feb 18, 2010I 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]....
Server :: Postfix Port - Send Message Via Port 587 Not Port 25
May 2, 2010I 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]....
Debian :: Migration Check List - To Check - Prepare Or Reconfigure
Feb 3, 2010I am new to Debian but not Linux-based systems. I have been experimenting a lot with Debian Lenny/Squeeze. I am growing more comfortable each day with the Debian design. Yet there remain many unexplored areas. I am creating a migration check list. Things to check, prepare, or reconfigure when moving from one Linux-based system to Debian.
I have a good computer background and my current check list probably is fairly good. Yet I would appreciate input and opinions from experienced Debian users of things to watch in such a migration. Login defs, passwd/group files, different directory locations, keymaps, services and daemons, etc. I am not too concerned with the desktop as I plan to stick with KDE 3.5 for a while and I can basically move those settings across.
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View 5 Replies View RelatedUbuntu :: Port Forwarding Crutch - Number Of Apps That Are Unable To Have The Outgoing Port Changed ?
Mar 28, 2010I'm not that great with mailservers, and just been thrown a curveball with a MS Exchange environment for which there is apparently no solution... yeah, right. But is there a workaround?
The problem is that the site mail (SMTP) needs to be sent via port 26 instead of the commonly used 25. Port 25 is mapped to a mailfilter, which apparently causes havoc with some of the mail, and the techs that have been on site trying to coax the Exchange server to co-operate have said that the only way would be to get rid of the filter.
The problem is that there are number of apps that are unable to have the outgoing port changed and so keep sending mail out on port 25.
I look after the Unix/Linux side of things at work, and I was wondering if there was an easy way to set up a Ubuntu box to receive mail on port 25 and just forward it to the MS box on port 26? So, in other words (and I hope this makes sense): monitor port 25, and forward whatever comes in on port 25 to the server on port 26. Simple portforwarding, or is it? What steps do I need to take?
Ubuntu Networking :: Error - Remote Port Forwarding Failed For Listen Port 5500
Aug 7, 2010When 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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Apr 4, 2011I'm trying to use iptables in order to forward all the incoming packets for port 5555 to port 5556 on the same server (192.168.2.101).
I wrote the following commands:
iptables -A PREROUTING -t nat -i any -p tcp --dport 5555 -j DNAT --to 192.168.2.101:5556
iptables -A FORWARD -p tcp -m state --state NEW -d 192.168.2.101 --dport 5556 -j ACCEPT
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[Code].....
OpenSUSE Network :: Port Redirection - Multiple IP Addresses - Or Run On Port 80
Apr 7, 2011In SuSE firewall0. I do have a openSuse 11.4 and multiple IP addresses on eth0 interface
I run (trying to/have to) multiple TOMCAT servers.
I am trying to have each tomcat instance listen to on separate IP address for example:
What i am trying to do is to redirect
a) tomcat 1 -
a) tomcat 2 -
And so on.
I know that it has to be possible.
I do have just eth0/
Is is it possible. Do I have to create "vittual interfaces"? eth0:1, .......... and do redirection ?
"Server" has got just single interface - just 1 ethernet calbe goes to that server. I am planning to have 10-15 tomcat's on that server (I have to unfortunatley) and each has to run on port 80
Is it possible to "grant" permissions to normal users to run app on port 80 - that would solve me lots of problems if impossible to redirect.
I tried to setcap 'cap_net_bind_service=+ep' /path/to/tomcat ...... but no luck
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Apr 6, 2010i am running ncat (netcat's new version from nmap) on centos . I am listening on different ports. My question is , is it possible that when a connection is received on a port say 123, i redirect this connection to a different port and use the 123 port again for listening connections. ncat has an option -k which u can add with -l , it will force fully listen on the port. It can accept multiple connections on a single port but i want that once a client connects on to 123 port, he is forwarded to some other port and no longer on 123.
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