similar to: Postfix Installed by default on CentOS 7 Minimal

I want to know the right command to type from a bash shell so that i can 1) Check the version of my cent os 2) Check all the open ports (tcp and udp) on my machine 3) Open a specific port say port 3306 so that a telnet request from a remote machiene can be accepted 4) Disable the effect of 3 above in case I want to Thanks in anticiaption of your kind responses to the questions

OS: CentosOS 7 I have installed samba + openldap + smbldap-tools + pam by: yum --enablerepo=extras install -y epel-release yum install -y smbldap-tools yum install -y samba openldap openldap-clients openldap-servers migrationtools yum install -y nss-pam* I know that smbldap-tools is a dead project, but I'm interested in it and would like research on it. I create users and

I'm using fail2ban with CentOS 6.6. Something is causing fail2ban's alerts sent to root's mail to be rejected. Here's a clip from one of the error messages: Message 48: From MAILER-DAEMON at lion.protogeek.org Sun Dec 21 03:09:20 2014 Return-Path: <MAILER-DAEMON at lion.protogeek.org> Date: Sun, 21 Dec 2014 03:09:19 -0600 From: Mail

I have CentOS 7 installed with GUI (Gnome 3.8.4) and I'm trying to follow the guide at https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/System_Administrators_Guide/s1-users-configui.html it speaks of "System > Administration" from the GUI or "system-config-users" from the command line, but I can't find either? I don't have a

I've followed these commands successfully : - yum install bind bind-chroot bind-libs bind-utils - service named start When I used " host x.domain.com localhost" I got : using domain name server : name : localhost address : 172.0.0.1#53 host x.domain.com not found: 2(SERVFAIL) I've changed the ip settings from (Automatic dhcp to manual ) but with the same result... --

Hi, ? I am searching around and I can?t find any GUI LVM manager included in a Centos live CD. ? I am trying to resize a LVM partition in a Centos 6.9 machine with a live CD. ? If I need any other distro, It?s fine with me ? Thanks! ? Miguel ?

centos 6.4, setup to be syslog server. Doing remote syslog using tcp works fine, so now want to add relp. I installed the rsyslog-relp package and told rsyslog.conf to use it: # RELP Syslog Server: $ModLoad imrelp # provides RELP syslog reception $InputRELPServerRun 20514 when I restart rsyslog I am told it does not like my InputRELPServerRun line: Oct 28 13:43:54 scan rsyslogd: [origin

I'm trying : ' yum -y install krb5-workstation ', but I get : Error Download packages no more mirrors to try And can't find a solution by searching...

My manager was just asking me if it's out - he's just gotten a large number of updates on one of our systems, just now. Please note this is NOT INTENDED TO START ANOTHER IDIOT FLAMEWAR; I'm just asking for a clarification, given that I don't see anything on the CentOS site. mark mark

Greetings, I wonder why the bugfixes gets implemented so fast that there are frequent announcements in centos-announce list. If only I could lay my (very) dirty hands on the sources of information... With warm Regards, Rajagopal

I just got SLAMMED with accessed to httpd from 91.230.121.156 I added the address to my firewall to drop it. FYI host 91.230.121.156 156.121.230.91.in-addr.arpa domain name pointer no-rdns.offshorededicated.net. Jerry

Hello Experts, When we can expect Security Update for Bind Vulnerability on Centos 6.8/7.2? ISC BIND Lightweight Resolver Protocol Req Processing Dos Vulnerability: CVE-2016-2775 -- With Thanks & Regards: Sidharth Sharma

On Wed, Apr 22, 2015 at 2:49 PM, David Both <dboth at millennium-technology.com> wrote: > Yes confusion will abound. There should only ever be one and only one DHCP > server on any network. With two you will sooner of later have multiple DHCP > client hosts with the same IP addresses. No, it's not going to give out duplicate IPs. The dual servers are configured as

Hi, arsh840 at gmail.com wants to follow you. ****** Is arsh840 at gmail.com you friend? ****** If Yes please follow the link below: http://invites.infoaxe.net/signup_e.html?fullname=&amp;email=centos at centos.org&amp;invitername=arsh840 at

William Warren wrote: > I would just buy a cloudkey and not have to bother installing the software > onto your machine directly. If you do not have a power over ethernet > switch you'll need a micro USB cable and power supply adapter to run it but > after that it takes care of running your software for you you don't have to > install anything on to your machine One would

Well, i just unistall sendmail and install postfix. works sending mails, but now only receibe mails locally. i can receive from another ip Technical details of permanent failure: Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server

We use automounted user home directories on our CentOS 6.3 desktops, and on the desktops on which we start apache, I have noticed that all 900+ home directories listed in NIS get (and stay!) mounted. If I don't start apache, this doesn't happen. We don't need access to home directories from apache, so I would like to prevent apache from mounting these home directories, but I

Mike Burger wrote: > On 2018-02-16 8:16 am, hw wrote: >> William Warren wrote: >>> I would just buy a cloudkey and not have to bother installing the software >>> onto your machine directly.? If you do not have a power over ethernet >>> switch you'll need a micro USB cable and power supply adapter to run it but >>> after that it takes care of running

This morning I see this in the syslog on our primary public DNS host. internal_send: 142.77.1.1#33950: Connection timed out: 1 Time(s) internal_send: 142.77.1.1#35153: Connection timed out: 1 Time(s) internal_send: 142.77.1.1#35644: Connection timed out: 1 Time(s) internal_send: 142.77.1.1#49394: Connection timed out: 1 Time(s) internal_send: 142.77.1.1#49816: Connection timed

What is the trick to get Postfix's local command to pipe mail through procmail? I have: -bash-4.1$ grep allow_mail_to_commands /etc/postfix/main.cf allow_mail_to_commands = alias, forward and -bash-4.1$ cat .forward |/usr/bin/procmail and a .procmailrc file: -bash-4.1$ cat .procmailrc PATH=/usr/bsd:/bin:/usr/bin:/exp/rcf/share/bin MAILDIR=/var/lib/amanda/Mail #you'd better