General :: Ssh Tunneling Through Two Servers To Get To Database
Jan 29, 2010
I'm having trouble ssh tunneling through two servers to get to my database. Server3 is restricted to all except from server2 and I'm at server1. So on server2 i do ssh -L1434:server2:1435 -l user server2 - this works i'm able to connect to the db on server3 from server2. But on server3 i'm trying to ssh -L1433:server2:1434 -l user server2
- and I get 'connection refused'. I tried telnet server2 1434 from server3 and i get 'connnection refused'. I checked the firewall is open on server 2 - firestarter confirms that port 1434 is open to everyone. I'm not sure what I'm doing wrong, but I have a hunch that maybe firestarter on server2 is not working correctly, because it also shows that port 22 is open to everyone and I can telnet server2 22 and I'm able to connect.
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Mar 28, 2010
I have a local computer (local), and remote computer (remote) behind of remote server (server). Also, I have user access to all of these 3 machines. Now, I want mount some directory, located at remote, to my local mount-point via sshfs. How should I setup my local sshfs and what should be done on server to make this mounting?
I'm stuck with ssh tunneling because the default method for tunneling requires root access while WinSCP somehow could do this with only user access (the tunnel server could be configured there in 'tunnel' panel).
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Feb 1, 2011
I currently have SSH set up on my network and facing outwards so that I can use my private key to authenticate and remotely administrate my server along with the ability to use SSH tunnels when needed to encrypt my traffic. However, I want to be able to give a friend access and use my server as a SSH tunnel, I do not want him to be able to execute any commands or write any files, just to create an SSH tunnel. Although it would not be too much of a large issue if he could write to his own home directory, I just want to ensure that he isn't able to browse around the whole file system and keep it as simple as possible.
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Oct 7, 2010
I need to allow connection to some users on a servers with key authentication so that they can setup a tunnel to access a web application. But I don't wan't them to have a access to a shell.
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Jul 14, 2011
I have a machine called ic that I can ssh to. There is another machine, fw, that is on a completely different VLAN, and I cannot talk to it. ic is on both my VLAN and the VLAN that fw uses, and so my usual procedure for sshing to fw is to ssh into ic and from there ssh into fw. If I wanted to script this action, however, how could I get it to work?
I tried ssh root@ic "ssh root@fw", but this results in the message Pseudo-terminal will not be allocated because stdin is not a terminal, and then I get three messages from fw, presumably because it has null input:
Permission denied, please try again.
Permission denied, please try again.
Permission denied (publickey,password).
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Aug 4, 2010
I am on Linux on machine LOCAL (my notebook).I ssh into a company machine REMOTE which is behind a firewall and ONLY allows incoming ssh connections (port 22), no outbound connections whatsoever. I do have full root access on both, LOCAL and REMOTE, REMOTE is however a VPS and behind a hardware firewall.I now need network access on REMOTE (HTTP and other protocols) for downloading and building some software. I also need to access to NON HTTP protocols such as git.
I was hoping to set up a reverse SSH tunnel for using my LOCAL machine, where I could be running a socks server. So that network access on REMOTE would be redirected over the SSH tunnel to a socks server running on machine LOCAL.How would I go about setting something like this up?
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Feb 28, 2011
There is an udp video stream accessible only on the local network, but I need to access it outside of the network. I have Linux machine (multiple actually) with root access.There is a small utility that makes the stream accessible on the local machine on port 1234.
./ping -h streamserver -p 1234
If I run it I can access the stream using vlc or mplayer.
mplayer udp://@:1234
vlc udp://@:1234
Now, I'm trying to create a port foward from my remote machine and access the port, but it is failing.
ssh me@machine -L 1234:127.0.0.1:1234
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Mar 7, 2011
am using zabbix open source solution for systems monitoring. I am facing a problem and discussed it on zabbix forum. my post was as "My zabbix server is behaving abnormally, approximately daily from 9 to 12, the server stop accumulating logs. I observed that the server report is RUNNING but it did not accumulate log values and also the machine have no extra load. Its shown in the graph image attached.t the following reply,"database performance?are you monitoring database IO and available database threads? "So any one have any idea that how can I do this as I am using MySQL as backend database on RHEL 3.
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Jan 5, 2011
I am writing a simple application that will run as user foo (i.e. Ubuntu user foo).However, the application will connect to my database as (database user foobar). IIRC, database users have nothing to do with Linux system users - but I just need to clarify that.So can an app launched to run as user 'foo', connect to a database as user 'foobar'?
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Mar 30, 2010
ubuntu 9.10 64 biti try to install XAMPP and i want to create new database by use phpMyAdmin
at MySQL localhost create new database it show No Privileges how to create new database from terminal
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Aug 19, 2010
I want to set up Ubuntu Server 10.04 on a computer I have lying around, set up a database for storing information, and a website for accessing it, which is only avaliable on my local network (it would just have an IP address on my local network). How would I do something like this?
I want to set it up on probably a Dell, and I want to be able to have multiple fields on the website that people see when they go to that IP address where they can enter information to be recorded in the database, and then be able to easily access it with a login, which different people would have different ones, so they can see just the information they entered..
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May 24, 2010
I want to create a new LDAP database.
Part of the new configuration is
Code:
dn: olcDatabase={1}hdb,cn=config
objectClass: olcDatabaseConfig
objectClass: olcHdbConfig
olcDatabase: {1}hdb
[Code].....
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Mar 28, 2011
Had anybody ever tried flashcache [URL] under ubuntu? My idea is to increase the throughput of a small server especially for database operations by using an SSD as cache.
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Sep 1, 2011
What is the best way to lock down database server?
via ufw and iptables.
Should I close port 80 on it?
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Sep 1, 2011
Looking for suggestions on what tools to use. I'm a finance major with limited programming knowledge. I would like to start collecting my own stock data. I would like to pull data from google finance or something similar. Also, I subscribe to data from AAII, American Asso. of Individual Investors, and would like to add that data into the database. and be able to have a nice gui to run queries on. My interests are finding if there are various different arbitrage opportunities and fundamental value investments.
Very low budget. Want to run it on ubuntu. I was looking at Postgre SQL as the database, but really have no idea what is optimal. Not to sure on the gui or how to pull the data. If anyone is interested in the topic and would like to help me set up and run algorithms let me know too.
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Dec 3, 2009
I have set up a 389 DS server and a kdc. However there is not a howto or any document concerning setting up the DS as a Kerberos database back-end. Nor is there a 389 DS forum, so I am asking here and hopefully some of you could possibly help or throw in some light as to this kind of setup.I have read the 389 DS features page and the Redhat documents but there is no reference to this feature.
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Jan 5, 2010
If any real hassle using a database between web sites. Not obviously phpBB but rather various projects that need a common read access to maintain a relation
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Jan 16, 2010
I just wanna clear database(postgresql) cache so how to do that..and also adempiere cache...
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Apr 8, 2010
I have a mysql database and i use it with apache for my webpages. And I guess it dosen't start when the computer starts so I have to manually start it with "sudo /etc/init.d/mysql start" This returns fail so i went to '/var/run/mysqld/' and the folder was empty. I don't know if this is the problem or not. How can I fix this?
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Aug 15, 2010
We started our project (it's a website "employee performance appraisal system") in windows by starting with some html forms and then slowlyadded php ,javascript and other stuff in windows we had no issues of insertion and retrieval of data from thedatabase.Now,we decided to shift the entire stuff to drupal the html forms along with those php files but we had 2 issues with this1. the first one was ..we created "page" for each html form and copied the html code into "page" but we didn't find where our pages are getting stored (do they get stored in mysql database that we create for drupal siter do they remain as html pages somwhere?)2.second problem was ...for admin in drupal I gave the username "root" and a password ..similarly for mysql also I gave a password.
now I used phpmyadmin and created another database called "appraisal" which is supposed to hold the data of our website.when I try to insert data into one of the tables of this database (attendance table) ,the following error occured "Attempt to connect failed access denied for user 'root'@'localhost'(using password:NO) cannot run querry insert intoattendance values('x','y')" Access denied for user 'root'@'localhost' (usingpassword:NO)Also I'm unable to access mysql as a normal user only super user can access and can we unset the password that's required to reach mysqlprompt?
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Jan 31, 2011
Im configuring virtual users for ftp and in few guides i find that i need this database.This guides were outdated so i cant follow them(by downloading with its commands), can anyone explain me something about this db(like, where to download, how, did i have installed other version of this db with ubuntu server default packages)...By the way i need to create login file with users and their passwords, for example:tomfoofredbar
Then i must create actual database file like this:
Code:
db_load -T -t hash -f logins.txt /etc/vsftpd_login.db
(that requires the Berkeley db program installed)
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May 29, 2011
Please tell me spesification if i want buid mail server on ubuntu 10.04 with good features :
1. For MTA ??
2. For Mail Filtering ??
3. For MDA ??
3. For Webmail ??
4. For Mailling List ??
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Jun 5, 2011
Does anybody know if it is possible to hide certain databases from the root user in MySQL?
It may sound stupid, since the root is the root and all that, and it may feel strange but it kind of adds a level of abstraction which I want to give the "root user", and I want to avoid going down the route of creating a new mysql instance on the server.
I had wondered if there is some kind of 'hide' parameter for a database or whether it is possible to change the root username to something else (e.g. 'realroot') and then create a new user 'root' with all the same privileges (except those on the hidden databases).
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Jun 10, 2011
i have installed mysql in ubuntu server 10.04 and want to access the database from windows xp.
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Jun 14, 2011
I have installed ubuntu 10.04.2 LTS and followd all the steps from the tutorial from [URL], postfix and dovecot works fine ...but ...is there any way to create email accounts (postfix account) without creating linux accounts for each mail account ?
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Oct 19, 2010
My boss has suggested installing the unixODBC driver in one of our Red Hat 5 servers in order to connect to a Microsoft SQL/SERVER database (Windows server).
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Jul 17, 2009
i'm new to MySQL and i designed a database using MySQL and PHP recently but dont know how to port it to my host company. How do i save the database on my flash drive then transfer to my host on my website's control panel.
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Mar 7, 2010
I want to know that how can i store network traffic in MySql Database. What i want to do is identify no of client requests hitting a server throughout the day...I have to store no. of request hitting a server in every 15 mins and insert that into database so that i can obtain a network traffic pattern.
I searched for a tool but cudn't find any that satisfy my requirements..
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Apr 11, 2010
I logged in phpmyadmin as root (with password that I just created in terminal), old databases are there but I have no privileges to create a new one.
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Apr 27, 2010
I am running Ubuntu 9.10 with Apache, phpMyAdmin and MySQL. Normally phpMyAdmin loads properly, but the other day I created a large database of 6,000+ tables and 1.3 GB of data in the entire database. Now phpMyAdmin loads and shows my different databases, but if I try to open the new large database, it just loads a white page with no content. Does anyone know if I can reconfigure my server so it will be able to show parts of the database?
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