You can get the correct version here at this URL:
https://developer.apple.com/download/more/
to download a your version of Xcode you want. Specifically, get 9.2.1. This is the recent version that works with mac OS Sierra.
Alternatively, this link works good too-
The plan is to build a DNS- UDP load balancer DNS recursive server (actually forwarding service). The design logic is simple-
On client side a public recursive+forwarding DNS IP –> hits the Nginx Load Balancers –> sends traffic to Google Public DNS/IBM Public DNS/Own recursive DNS/OpenDNS.
The configuration is quite simple on Nginx Load Balancer, the core configuration content is pretty straight forward:
# Load balance UDP-based DNS traffic across two servers
stream {
upstream dns_upstreams {
server 192.168.136.130:53;
server 192.168.136.131:53;
}
server {
listen 53 udp;
proxy_pass dns_upstreams;
proxy_timeout 1s;
proxy_responses 1;
error_log logs/dns.log;
}
}
Continue reading “DNS UDP Load Balancer using Nginx” »
Dynamic Host Configuration Protocol (DHCP) is a client/server protocol that automatically provides an Internet Protocol (IP) host with its IP address and other related configuration information such as the subnet mask and default gateway.
In our previous article, you have setup your DNS Server using Webmin, refer below link for more information.
In this article We will seen how to configure DHCP Server Using Webmin(web-based interface). Webmin tool offer to new system administrators to perform all system management task from via a web browser, Instead of using the command line console or terminal. You can also manage a system from the console or remotely. Continue reading “Configure DHCP Server Step-by-Step config Guide Using Webmin” »
Ports to be opened:
SMTP inbound / outbound port – 25
MSA inbound port – 587
ODMR inbound port – 366
SMTP SSL port – 465
ActiveSync port – 80
ActiveSync SSL port – 443
BlackBerry Enterprise Server – 3101
POP3 inbound / outbound port – 110
IMAP inbound port – 143
POP3 SSL port – 995
IMAP SSL port – 993
DNS outbound port – 53
LDAP port – 389
Remote Administration port – 1000
Remote Administration SSL port – 444
WorldClient port – 3000
WorldClient SSL port – 443
Minger port – 4069
To install webmin on debian 8 just follow this instructions :
cd /root wget http://www.webmin.com/jcameron-key.asc apt-key add jcameron-key.asc echo "deb http://download.webmin.com/download/repository sarge contrib" >> /etc/apt/sources.list echo "deb http://webmin.mirror.somersettechsolutions.co.uk/repository sarge contrib" >> /etc/apt/sources.list apt-get update apt-get -y install webmin
Continue reading “Install webmin on debian 8” »
Downloading Cacti
You can download the newest version of Cacti from its website.
wget http://www.cacti.net/downloads/cacti-0.8.7b.tar.gz
Installing Cacti
Install apache webserver with php support, mysql database server, snmp, some php modules and rrdtool.
apt-get install apache2 libapache2-mod-php5 php5 php5-cli php5-mysql php5-gd php5-snmp mysql-client mysql-server libmysqlclient15-dev snmp snmpd rrdtool
Add a user account for cacti. Continue reading “Cacti on Debian (Updated)” »
1:1 NAT maps a single Public IP Address to one of your computer within your local area network (LAN). Unlike port forwarding, 1:1 NAT forwards all ports from one external IP to one internal IP.
iptables -t nat -A POSTROUTING -o eth0 -s 192.168.1.2 -j SNAT --to-source 83.229.64.2 iptables -t nat -A PREROUTING -i eth0 -d 83.229.64.2 -j DNAT --to-destination 192.168.1.2 iptables -A FORWARD -s 83.229.64.2 -j ACCEPT iptables -A FORWARD -d 192.168.1.2 -j ACCEPT
Port forwarding allows remote computers, for example, computers on the Internet, to connect to a specific computer or service within a private local area network (LAN).
Typical applications include the following:
In Linux, you can configure port forwarding using iptables command.
The below example is to enable the port forwarding of port 80 of the external ip address “83.229.64.2” to the port 80 of the computer inside the LAN with the ip address of “192.168.1.2”.
iptables -t nat -A PREROUTING -i eth0 -d 83.229.64.1 -p tcp --dport 80 -j DNAT --to-destination 192.168.1.2:80 iptables -A FORWARD -p tcp --dport 80 -j ACCEPT
Install necessary packages
apt-get install php5-sasl php5-intl libssh2-php php5-curl php-http php5-xmlrpc php5-geoip php5-ldap php5-memcache php5-memcached php5-tidy
Register the Horde Pear channel
pear channel-discover pear.horde.org
Set the Horde installation directory
pear install horde/horde_role
pear run-scripts horde/horde_role
You'll be asked the following question:
Filesystem installation for base Horde application: /var/www/horde
You can also chose another folder for the web-accessible horde files. However you'll need to adjust the path in the following steps then. Continue reading “Install Perfect Mail Server with ISPConfig and Horde 5.0 on Debian Wheezy- Part-2” »