For example, take the server with the operating system Ubuntu Server 14.04, in which let’s say we changed the network settings when executing the commands:
In this article I will briefly describe the difference between MASQUERADE and SNAT. MASQUERADE. Less fast routing than SNAT with mass requests, since for each new connection an IP address on the external network interface (WAN) is determined. Great for home use routers and when changing the IP address on the WAN interface.
In this article I’ll look at the SMART information of the first SSD drive that comes under the arm and describe what the attributes mean. Suppose we looked at the information on the disk /dev/sda: I have the following information: Raw_Read_Error_Rate – means the number of read errors. Throughput_Performance – overall disk performance. Spin_Up_Time – […]
RAID arrays are necessary to improve the reliability of data storage and increase the speed of working with disks by combining multiple disks into one large one. RAID arrays can be either hardware, firmware or software. I will describe several types: RAID 0 (stripe) – The mode is only for improving performance when reading/writing does […]
FTP can work both in the active mode and in the passive mode. In active mode, the client performs a control connection with the server, and the server makes a connection to the client for data transfer. The passive control connection and data connection are made by the client himself. Under the control connection is […]
DHCP – Dynamic Host Configuration Protocol in a TCP / IP network. I will describe the possible types of DHCP messages: DHCPDISCOVER — customer request for addresses. DHCPOFFER — the server’s offer to get the address. DHCPREQUEST — a client request for an address (suggested by the server in DHCPOFFER). DHCPACK — server confirmation of […]