08-01-2008
There are usually several ways to reach a goal.
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
using redhat 7.2
Is it possible to not allow root to ssh into the server remotely, but allow the account that ssh'd in to the box to su to root? This way there is the added security of a hacker needing two passwords to hack your computer, a username/password for a regular account and also the... (3 Replies)
Discussion started by: theDirtiest
3 Replies
2. UNIX for Dummies Questions & Answers
Hi all
I'm using an AIX 5 machine.
I'm trying to telnet from this machine to another Aix machine.
When I use the "root" user - Everything works.
I can telnet successfully the other machine
When I use another user but root - I can't telnet the machine:
noah@logist:/home/noah>telnet aixtst... (2 Replies)
Discussion started by: sunbird
2 Replies
3. UNIX for Dummies Questions & Answers
All,
I want to run a non-root script as the root user with non-root environment variables with crontab. The non-root user would have environment variables for database access such as Oracle or Sybase. The root user does not have the Oracle or Sybase enviroment variables. I thought you could do... (2 Replies)
Discussion started by: bubba112557
2 Replies
4. UNIX for Dummies Questions & Answers
OK, let see, i have a Tru64 Unix and need to know how the list of ftp users works and in /etc/ftpusers we have the unauthorized users but when we create a new user i want this users put automatic for deny access .....
where i set when creation of users action put automatic the user in that file?... (1 Reply)
Discussion started by: wbendek
1 Replies
5. AIX
Hi,
I have to forbid root-logins on all my servers, expect from two machines, these 2 machines login with root without a password
it was quite easy with ssh, but I have a problem regarding rsh/rlogin, an there
are a lot of rsh jobs, so it would take a lot of time to change all this... (4 Replies)
Discussion started by: funksen
4 Replies
6. Solaris
I'm attempting to deny a user's ability to login as root through any remote means - ie telnet or ssh. I've read most of the threads that I can find on this site and I've looked at BigAdmin on Sun's site. I have done what has been suggested here and on BigAdmin which is to make sure that the line... (5 Replies)
Discussion started by: gonzotonka
5 Replies
7. Solaris
Hi All
After downloading ZFS documentation from oracle site, I am able to successfully migrate UFS root FS without zones to ZFS root FS. But in case of UFS root file system with zones , I am successfully able to migrate global zone to zfs root file system but zone are still in UFS root file... (2 Replies)
Discussion started by: sb200
2 Replies
8. AIX
Is there a way to deny access to a specific remote login option.
example:
usera--deny telnet access but keep rsh and rlogin
userb--keeps telnet, rsh, and rlogin
I'm basically trying to contol the access per services instead of changing the LOGIN REMOTELY(rsh,tn,rlogin) option to yes or no. (12 Replies)
Discussion started by: leemalloy
12 Replies
9. Red Hat
Hi team,
I tried to modify the /etc/security/limits.conf file to limit the root user for more one login. I added the line in limits.conf file like:
@root hard maxlogins 1
I also tried to modify /etc/ssh/sshd_config to limit the root userlogin by adding this:
... (10 Replies)
Discussion started by: leo_ultra_leo
10 Replies
10. UNIX for Dummies Questions & Answers
Hi there,
For /etc/hosts.deny was it used to deny access from the internet? (2 Replies)
Discussion started by: alvinoo
2 Replies
LEARN ABOUT NETBSD
membar_enter
MEMBAR_OPS(3) BSD Library Functions Manual MEMBAR_OPS(3)
NAME
membar_ops, membar_enter, membar_exit, membar_producer, membar_consumer, membar_sync -- memory access barrier operations
SYNOPSIS
#include <sys/atomic.h>
void
membar_enter(void);
void
membar_exit(void);
void
membar_producer(void);
void
membar_consumer(void);
void
membar_sync(void);
DESCRIPTION
The membar_ops family of functions provide memory access barrier operations necessary for synchronization in multiprocessor execution envi-
ronments that have relaxed load and store order.
membar_enter()
Any store preceding membar_enter() will reach global visibility before all loads and stores following it.
membar_enter() is typically used in code that implements locking primitives to ensure that a lock protects its data.
membar_exit()
All loads and stores preceding membar_exit() will reach global visibility before any store that follows it.
membar_exit() is typically used in code that implements locking primitives to ensure that a lock protects its data.
membar_producer()
All stores preceding the memory barrier will reach global visibility before any stores after the memory barrier reach global visibility.
membar_consumer()
All loads preceding the memory barrier will complete before any loads after the memory barrier complete.
membar_sync()
All loads and stores preceding the memory barrier will complete and reach global visibility before any loads and stores after the memory
barrier complete and reach global visibility.
SEE ALSO
atomic_ops(3)
HISTORY
The membar_ops functions first appeared in NetBSD 5.0.
BSD
February 11, 2007 BSD