Back to Blog

Tag: linux

Linux commands tips – Part 3

Multiple Gateways to Server nano /etc/network/interfaces auto lo iface lo inet loopbackauto eth0 iface eth0 inet static address netmask gateway eth1 iface eth1 inet static address netmask post-up route add via dev eth1 auto eth2 iface eth2 inet static address netmask post-up route add via dev eth2   Restrict…
Continue Reading

Linux commands tips – Part 2

Start / Stop / Restart OpenSSH (Ubuntu) START Service sudo /etc/init.d/ssh start OR sudo service ssh start STOP Service sudo /etc/init.d/ssh stop OR sudo service ssh stop RESTART Service sudo /etc/init.d/ssh restart OR sudo service ssh restart STATUS sudo /etc/init.d/ssh status OR sudo service ssh status   Restart network (Ubuntu) sudo service network-manager restart OR sudo ifconfig eth0 down &&…
Continue Reading
DNS, Linux, Network, NIC, Uncategorized

Linux commands tips – Part 1

Limit ssh access by IP address nano /etc/hosts.allow sshd : localhost : allow sshd : 192.168.0. : allow sshd : : allow sshd : : allow sshd : ALL : deny   Enable SSH root login (Ubuntu) nano /etc/ssh/sshd_config Change line: FROM: PermitRootLogin prohibit-password TO: PermitRootLogin yes sudo systemctl restart sshd   Restrict SSH to one interface nano…
Continue Reading

VOIP Server Hardware requirements

Number of VoIP Users – This can be determined by the number of SIP extensions you will have in your solution. Most open source telephony software applications allow you to add as many VoIP Users or SIP extensions as you wish. No hidden licensing fees or additional costs. The number of users may affect however, the maximum number of simultaneous calls you…
Continue Reading