want to create a user account for each of the key programs installed on my debian server. For example, for the following programs:
Tomcat Nginx Supervisor PostgreSQL
This seems to be recommended based on my reading online. However, I want to restrict these user accounts as much as possible, so that they dont have a shell login, dont have access to the other programs and are as limited as possible but still functional.
Would anyone mind telling me how this could be achieved? My reading so far suggests this:
But I think there may be a more complete way of doing it.
A few of the other employees here need to learn "vi" in order to use crontab to schedule / unschedule jobs on one of our production servers. I tried to set up a login on one of my Linux boxes for them to use "vimtutor", but scrapped it and decided to try for something more secure, since there are... (1 Reply)
I am a bash shell programmer and I create programs on occasional basis.
Now, I dont want my programs to be run by typing out its name at a command line. I want to make it as user friendly as possible. I want to create icons on the desktop so users can click on it. mind you, I said "desktop... (7 Replies)
Hi,
I need to provide execute access to certain users and not to all users
For ex: if ther is a file /home/august/aug.sh.
and there are user's like jan,feb,mar,april,May and jan is the owner of that box. I need to provide execute access to feb and mar only. I also know the root pwd for... (3 Replies)
Hi,
We have Oracle Database on AIX 5.3 server.We want to give ftp access to a user to a specific folder.He should be able to put and get files from that specific folder only.Moreover he should not be able to cd to any other filesystems also along with root directory.
Please note that as per... (1 Reply)
Hi,
I am a newbie to Linux and I want to create a user which can only execute network config commands like ifconfig and ping(to check the config). The following is what I did but failed.
1) Created a group called 'netconfig'.
2) added a user named 'user'.
3) added user to the 'netconfig'... (4 Replies)
Hi All ,
Some of the users should be restricted using the MV commands on some of the standard folders. We had an issue the other day like from the standard folder structure which was set up one of the user has moved a folder to a different location and the jobs failed as the folder was not... (6 Replies)
Hi,
What is the command or how to create a user with the restricted usage of space on a disk.
Also let me know how to change the limit of the space size allotted in future for the same user.
~Vinodh Kumar V M (3 Replies)
I have solaris 10 os 64 bit.
I need to create a restricted user which has the following command to run
ls
df and du
list crontab of root and edit crontab of root also
please help (2 Replies)
Hello everyone
I need to create a restricted user or a special user. Here is what I need.
I have this path
next to profiles I have server1, server2, server3.......
The user that I have to create I need that he can move between server1. server2, server3 because in every one have logs... (1 Reply)
Hey guys,
Suppose i run passwd via bash shell. It is a suid program, which temporarily runs as root(owner) and modifies the user entries.
However, when i write a C file and give 4755 permission and root ownership to the 'a.out' file , it doesn't run as root in bash shell. I verified this by... (2 Replies)
Discussion started by: syncmaster
2 Replies
LEARN ABOUT CENTOS
dblink_connect_u
DBLINK_CONNECT_U(3) PostgreSQL 9.2.7 Documentation DBLINK_CONNECT_U(3)NAME
dblink_connect_u - opens a persistent connection to a remote database, insecurely
SYNOPSIS
dblink_connect_u(text connstr) returns text
dblink_connect_u(text connname, text connstr) returns text
DESCRIPTION
dblink_connect_u() is identical to dblink_connect(), except that it will allow non-superusers to connect using any authentication method.
If the remote server selects an authentication method that does not involve a password, then impersonation and subsequent escalation of
privileges can occur, because the session will appear to have originated from the user as which the local PostgreSQL server runs. Also,
even if the remote server does demand a password, it is possible for the password to be supplied from the server environment, such as a
~/.pgpass file belonging to the server's user. This opens not only a risk of impersonation, but the possibility of exposing a password to
an untrustworthy remote server. Therefore, dblink_connect_u() is initially installed with all privileges revoked from PUBLIC, making it
un-callable except by superusers. In some situations it may be appropriate to grant EXECUTE permission for dblink_connect_u() to specific
users who are considered trustworthy, but this should be done with care. It is also recommended that any ~/.pgpass file belonging to the
server's user not contain any records specifying a wildcard host name.
For further details see dblink_connect().
PostgreSQL 9.2.7 2014-02-17 DBLINK_CONNECT_U(3)