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Athena blockchain community
Publish: 2021-04-25 18:10:56
1. Is the Athena exchange real? Someone's making money. Is it reliable? How much money can a person make? Athena exchange, whose domain name is registered as Suzhou newkeying Network Technology Co., Ltd., currently certifies and receives 20 usdt BEC miner. It signs in and receives 5% of BEC every day, that is, 0.1 u bec. BEC rises by 3% every day. It can collect wool and invest. Compound interest snowball. The original 20 u may become 30 or 40 u. it's nice to earn a few hundred yuan from collecting wool. For authentication, you only need to fill in your name and number instead of uploading your certificate, and then brush your face or take a photo of yourself< br />
how to play Athena exchange? Home - mine pool - free miner - sign in, adhere to sign in every day, no need to do tasks. It can be realized when it reaches 10u. For static income, take 5% of the daily income of the investment quota, and the currency price rises unilaterally, with a fixed daily rise of about 3%. For promotion, take 10% of the daily income of two generations. Dynamic direct push bonus takes 100% of the daily income of the first generation and 50% of the daily income of the second generation! The team has 1000 people who are certified and upgraded to junior partners, and the daily dividend is about 700 yuan
please scan your browser to join Athena exchange. You can fill in the invitation code, 9mwuqw
& 65532<
Athena community autonomous organization
Athena community autonomous organization is an open, transparent and certificated organization. The mother currency beccoin represents all the rights and interests of Athena blockchain digital exchange<
Athena's core highlights: faith + consensus + exchange
1. Concept advantage (creating a wealth community)
2. Technical advantages (super technical background)
3. Open source on the chain, market holding, and destruction are transparent and clear
4. Low threshold, wide audience and strong powder absorption
5. Reverse push mechanism, market push, you will automatically increase the order
6. Single zone can get money (no direct push assessment)
7
8. Love and give up (hunger Marketing), improve the consensus mechanism
9. The last stick, share the richness
10. Market subsidies, open and transparent, can be obtained, and can be ignited forever
let every coin holder have the right to participate in business decisions, team elections and other major business decisions of the community. Athena is a community organization shared by all the coin holders
label: Athena exchange
how to play Athena exchange? Home - mine pool - free miner - sign in, adhere to sign in every day, no need to do tasks. It can be realized when it reaches 10u. For static income, take 5% of the daily income of the investment quota, and the currency price rises unilaterally, with a fixed daily rise of about 3%. For promotion, take 10% of the daily income of two generations. Dynamic direct push bonus takes 100% of the daily income of the first generation and 50% of the daily income of the second generation! The team has 1000 people who are certified and upgraded to junior partners, and the daily dividend is about 700 yuan
please scan your browser to join Athena exchange. You can fill in the invitation code, 9mwuqw
& 65532<
Athena community autonomous organization
Athena community autonomous organization is an open, transparent and certificated organization. The mother currency beccoin represents all the rights and interests of Athena blockchain digital exchange<
Athena's core highlights: faith + consensus + exchange
1. Concept advantage (creating a wealth community)
2. Technical advantages (super technical background)
3. Open source on the chain, market holding, and destruction are transparent and clear
4. Low threshold, wide audience and strong powder absorption
5. Reverse push mechanism, market push, you will automatically increase the order
6. Single zone can get money (no direct push assessment)
7
8. Love and give up (hunger Marketing), improve the consensus mechanism
9. The last stick, share the richness
10. Market subsidies, open and transparent, can be obtained, and can be ignited forever
let every coin holder have the right to participate in business decisions, team elections and other major business decisions of the community. Athena is a community organization shared by all the coin holders
label: Athena exchange
2.
ASUS z87-k motherboard supports i7-4790t processor at most
ASUS Z87 motherboard supports intel-174 with lga1150 slot; The fourth generation, the new fourth generation, and the fifth generation of core & Chen 8482; I7 / core-8482; I5 / core-8482; I3 / pentium-174/ Saiyang & Chen 174; Processor. ASUS official website provides CPU support list for specific CPU model query:
Open ASUS official website CPU support list webpage, input motherboard model in model query:
ASUS official website CPU support query link is: webpage link
3. ATX board design is adopted, which not only provides users with sufficient expansion performance, but also ensures the heat dissipation between motherboards e to the sufficient space brought by the board. Two PCI-E x16 graphics card slots support AMD's CrossFireX technology, so users can not only match with independent graphics card with strong performance, but also make great achievements. This board with i7-4770k overclocking suit, whether for entry-level overclocking players, or general household, is more appropriate. Due to the limited cost, the number of power supply phases is more general.
4. 1: Memory support difference: z87-a (hereinafter referred to as a) can support DDR3 3000 memory at most, while z87-k (hereinafter referred to as K) can only support DDR3 2800 memory at most. However, from my personal point of view, 2800 memory support is already very high
2: motherboard a supports NVIDIA SLI technology, that is, al card parallel technology of N card, and also supports a card crossfire technology; K can only support a card's crossfire technology, not SLI. If you need SLI, you should pay attention
3: motherboard a supports two PCI-E x16 3.0 slots (al slot x8), which is generally used for graphics cards, while motherboard K can only support one PCI-E x16 3.0 interface, and the rest of PCI-E interfaces are 2.0
4: motherboard A is alc892 integrated sound card, while motherboard K is alc887 integrated sound card. Motherboard a supports 192Khz, 24 bit blue light lossless sound effect, but motherboard K can't
5: motherboard a provides six USB3.0 interfaces, while motherboard K can only support four (motherboard a has four in the rear and two in the front; motherboard a has four in the back; motherboard K has four in the front; motherboard a has four in the back; motherboard a has two in the front; K motherboard: 2 in the rear, 2 in the front, and USB3.0 interface in the front (chassis support is required)
6: some differences of post interface, for example, motherboard a provides 6 complete audio interfaces, while K only has 3 audio interfaces. Moreover, motherboard a supports optical fiber s / PDIF digital audio output interface and mini DP interface, but K can't provide these supports
7: motherboard a has 8 power supplies for processors, and motherboard K has 4 power supplies. If the building owner wants to exceed the frequency, he naturally suggests choosing the motherboard with more power supplies. When the load is high, it is concive to the stability of the processor
8: additional software and details are different. Specific building owners can refer to the Internet, and generally many functions are not very necessary
pure hand play is not a . In a simple and clear way, z87-a is the ideal choice if the owner pursues overclocking or complete functions. If the owner just wants to buy a computer and use it casually, it doesn't matter how many functions there are. As long as the performance can play and the functions are enough, then buy K (in other words, it's better to buy Z87 than B85 + E3 in this way, -- when I say waste words)
I have to explain that with the same processor and graphics card, there is not much difference in the performance of the two motherboards. The other answer is that the integrated display is not a problem. The core graphics card integrated with modern Intel processor is not on the motherboard in the processor. If the owner wants to use the core graphics card, the two motherboards can support the same, no difference, However, it is estimated that the owner will not consider using the set show
if you don't understand, please ask. If you are helpful, please take it. Thank you
2: motherboard a supports NVIDIA SLI technology, that is, al card parallel technology of N card, and also supports a card crossfire technology; K can only support a card's crossfire technology, not SLI. If you need SLI, you should pay attention
3: motherboard a supports two PCI-E x16 3.0 slots (al slot x8), which is generally used for graphics cards, while motherboard K can only support one PCI-E x16 3.0 interface, and the rest of PCI-E interfaces are 2.0
4: motherboard A is alc892 integrated sound card, while motherboard K is alc887 integrated sound card. Motherboard a supports 192Khz, 24 bit blue light lossless sound effect, but motherboard K can't
5: motherboard a provides six USB3.0 interfaces, while motherboard K can only support four (motherboard a has four in the rear and two in the front; motherboard a has four in the back; motherboard K has four in the front; motherboard a has four in the back; motherboard a has two in the front; K motherboard: 2 in the rear, 2 in the front, and USB3.0 interface in the front (chassis support is required)
6: some differences of post interface, for example, motherboard a provides 6 complete audio interfaces, while K only has 3 audio interfaces. Moreover, motherboard a supports optical fiber s / PDIF digital audio output interface and mini DP interface, but K can't provide these supports
7: motherboard a has 8 power supplies for processors, and motherboard K has 4 power supplies. If the building owner wants to exceed the frequency, he naturally suggests choosing the motherboard with more power supplies. When the load is high, it is concive to the stability of the processor
8: additional software and details are different. Specific building owners can refer to the Internet, and generally many functions are not very necessary
pure hand play is not a . In a simple and clear way, z87-a is the ideal choice if the owner pursues overclocking or complete functions. If the owner just wants to buy a computer and use it casually, it doesn't matter how many functions there are. As long as the performance can play and the functions are enough, then buy K (in other words, it's better to buy Z87 than B85 + E3 in this way, -- when I say waste words)
I have to explain that with the same processor and graphics card, there is not much difference in the performance of the two motherboards. The other answer is that the integrated display is not a problem. The core graphics card integrated with modern Intel processor is not on the motherboard in the processor. If the owner wants to use the core graphics card, the two motherboards can support the same, no difference, However, it is estimated that the owner will not consider using the set show
if you don't understand, please ask. If you are helpful, please take it. Thank you
5. 1、 Installation and configuration of network devices
when installing Linux, if you have a network card, the installation program will prompt you to give the configuration parameters of TCP / IP network, such as the IP address of the local computer, the IP address of the default gateway, the IP address of DNS, etc, The installation program will automatically compile the network card (Linux system must first support) driver into the kernel. But we must understand the process of loading the network card driver, so we can easily operate when changing the network card and using multiple network cards in the future. The network card driver is loaded into the kernel as a mole, All the network card drivers supported by Linux are stored in the directory / lib / moles / (Linux version number) / net /, for example, the driver of Inter's 82559 series 10 / 100M self-adaptive boot network card is eepro100. O, 3Com's 3c509 isa network card is 3c509. O, dlink's PCI 10 network card is via Rhine. O, NE2000 compatible network card drivers are ne2k PCI. O and ne. O. after understanding these basic drivers, we can change the network card or add the network card by modifying the mole configuration file.
1. Modify the / etc / conf.moles file
this configuration file is an important parameter file to load the mole, Let's first look at a sample file
; / etc / conf.moles
alias eth0 eepro100
alias eth1 eepro100
this file is the content of conf.moles in a Linux system with two inter 82559 series network cards. The alias command indicates the name of the driver of the Ethernet port (such as eth0), If you use the command modprobe eth0, the system will automatically load eepro100. O into the kernel, So it is not necessary to use options in conf.moles to specify the IO address and interrupt number of the network card. However, corresponding to isa network card, you must specify the IO address or interrupt number of the hardware in conf.moles, as shown below, which indicates the conf.moles file of NE isa network card.
alias eth0 ne
Options ne IO = 0x300 IRQ = 5
after modifying the conf.moles file, You can use the command to load the mole, for example, the second network card to be inserted into the inter:
? Insmod / lib / moles / 2.2.14/net/eepro100. O
so that the mole eepro100. O can be loaded at the Ethernet port, You can also use the command to view the currently loaded mole information:
[ root@ice /Etc] # lsmod
mole size used by
eepro100 15652 (autoclean)
the returned result means that the currently loaded mole is eepro100, with 15652 bytes in size and two users, The method is to clear automatically.
2. Modify the / etc / lilo.conf file
in some relatively new Linux versions, because the operating system automatically detects all related hardware, it is not necessary to modify the / etc / lilo.conf file at this time, You can modify the lilo.conf file. Add the following command to the / etc / lilo.conf file:
append = & quot; ether=5,0x240,eth0 ether=7,0x300,eth1"<
the meaning of this command is that the IO address of eth0 is 0x240, the interrupt is 5, the IO address of eth1 is 0x300, and the interrupt is 7.
in fact, this statement comes from the parameter passed when the system boot image file,
Lilo: Linux ether = 5,0x240, eth0 ether = 7,0x300, eth1
this method can also make the Linux system configure two network cards, When using more than three network cards, you can follow the same method.
after configuring the network card, you should configure the TCP / IP parameters. In general, when installing the Linux system, you will be prompted to configure the network parameters, You can use the following commands:
? Ifconfig eth0 a.b.c.d netmask e.f.g.h
a.b.c.d is the IP address of eth0, and e.f.g.h is the netmask.
in fact, in Linux system, we can set multiple IP addresses for a network card. For example, the following command:
? Ifconfig eth0: 1 202.112.11.218 netmask 255.255.192
then, the following command is used to set the IP address of a network card, Use the command "ifconfig - a" to see the interfaces of all network interfaces:
eth0 link encap:Ethernet HWaddr 00:90:27:58:AF:1A
inet addr:202.112.13.204 Bcast :202.112.13.255 M ask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 M etric:1
RX packets:435510 errors :0 dropped:0 overruns :0 frame:2
TX packets:538988 errors :0 dropped:0 overruns :0 carrier:0
c ollisions:318683 txqueuelen :100
I nterrupt:10 Base address:0xc000
eth0:1 Link encap:Ethernet HWaddr 00:90:27:58:AF:1A
inet addr:202.112.11.218 Bcast :202.112.11.255 M ask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 M etric:1
I nterrupt:10 Base address:0xc000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask :255.0.0.0
UP LOOPBACK RUNNING MTU:3924 M etric:1
RX packets:2055 errors :0 dropped:0 overruns :0 frame:0
TX packets:2055 errors :0 dropped:0 overruns :0 carrier:0
c ollisions:0 txqueuelen : 0
there are three network interfaces, eth0, eth0:1, lo, Eth0 is the real Ethernet interface. Eth0:1 and eth0 are the same network card, but they are bound with another address. Lo is the sending address<
eth0 and eth0:
1 the IP addresses of different network segments can be used, which is very useful when the same physical network segment uses different network addresses<
in addition, the network card has a mode of prosimc. In this mode, the network card will receive all the packets in the network. Some network monitoring tools under Linux, such as tcpmp and snort, all set the network card to hybrid mode.
the ifconfig command can change the IP address of the network card ring the running time, but if the system is restarted, the IP address of the network card will be changed, Linux still starts the network interface according to the original default settings
at this time, you can use netconfig or NETCONF command to reset the default network parameters. Netconfig command is to reconfigure the basic TCP / IP parameters, including whether to dynamically obtain IP address (dhcpd and BOOTP), IP address of network card, network mask, default gateway and preferred domain name server address
NETCONF command can configure all network parameters in detail, which is divided into three parts: client task, server task and other configuration. In the client configuration, it mainly includes the configuration of basic host (host name, valid domain name, network alias, IP address of corresponding network card, network mask, network device name, kernel driver of network device),
DNS address configuration, default gateway address configuration, NIS address configuration, IPX interface configuration, PPP / slip configuration, etc. In the server configuration, it mainly includes NFS configuration, DNS configuration, Apache webserver configuration, samba configuration and Wu ftpd configuration
. Among the other configuration options, one is about the host configuration in the / etc / hosts file, one is about the network configuration information in the / etc / networks file, and the last is about the configuration information using linuxconf
under the command of linuxconf, you can also configure the network information, but you can find that the linuxconf program calls NETCONF to configure the network<
in addition, the system configuration files about the network are stored in the / etc / sysconfig / network scripts directory.
examples are as follows:
:
& lt; br>& lt; br> <
ifcfg-eth0 * ifdown post * ifup aliases * ifup PPP *
ifcfg-eth1 * ifdown PPP * ifup IPX * ifup routes *
ifcfg lo * ifdown sl * ifup PLIP * ifup sl *
ifdown @ ifup @ ifup post * network functions
ifcfg-eth0 is the configuration information of Ethernet port eth0,
its contents are as follows:
device = & quot; eth0" /* Specify the network device name * /
IPADDR = & quot; 202.112.13.204" /* Indicate the IP address of the network device * /
netmask = & quot; 255.255.255.192" /* Specify network mask * /
Network = 202.112.13.192 / * specify network address * /
broadcast = 202.112.13.255 / * specify broadcast address * /
onboot = & quot; yes" /* Indicates whether the network card is activated at system startup * /
bootproto = & quot; none" /* Indicates whether to use BOOTP protocol * /
therefore, you can also modify this file to change network parameters under Linux[/ Size]
configuration of two network services
in this section, we do not introce the configuration of specific network servers (DNS, FTP, WWW, sendmail) in detail (that will be a huge space), but introce the files related to the configuration of Linux Network services.
1. Lilo configuration file
in Linux system, there is a system boot program, Lilo (Linux loadin) is used to realize the selective startup of multiple operating systems. Its configuration file is / etc / lilo.conf. In this configuration file, the configuration parameters of Lilo are mainly divided into two parts. One is the global configuration parameters, including setting the boot device, etc. the other is the local configuration parameters, It includes the configuration parameters of each boot image file.
I will not describe each parameter in detail here, but only two important parameters: password and restricted option. The password option adds password protection to each boot image file. As we all know, there is a single user mode in Linux system. In this mode, the, Users log in to the Linux system as super users. By adding parameters (Linux single or Linux init 0) ring Lilo boot, people can directly enter the single user mode super user environment without password, This will be very dangerous. So the password configuration option is added in lilo.conf to add password protection to each image file. You can use the password option in global mode (add the same password to all image files), or add a password to each indivial image file.
in this way, every time the system starts up, the, You may find it troublesome to enter the password every time. You can use the restricted option, which enables Lilo to check the password only when the parameters (such as Linux single) are entered ring Linux startup. These two options can greatly increase the security of the system, It is recommended to set them in lilo.conf file.
since password is stored in plaintext in / etc / lilo.conf file, it is necessary to change the attribute of / etc / lilo.conf file to only root readable (0400).
in addition, in the early version of Lilo, there was a limitation that boot sector must be stored in the first 1024 cylinder, which has been broken in Lilo version 2.51, After downloading and decompressing the latest version, use the command make & quot; After that, use the command make install to complete the installation.
note: physical security is the most basic security, even if the password protection is added in lilo.conf, if there is no physical security, the password protection can be used, Malicious intruders can use the boot floppy disk to start the Linux system.
2. The configuration file of domain name service
(1) / etc / host name stores the host name and domain name of the Linux system in this file. Example file
ice.xanet.e.cn
this file table
when installing Linux, if you have a network card, the installation program will prompt you to give the configuration parameters of TCP / IP network, such as the IP address of the local computer, the IP address of the default gateway, the IP address of DNS, etc, The installation program will automatically compile the network card (Linux system must first support) driver into the kernel. But we must understand the process of loading the network card driver, so we can easily operate when changing the network card and using multiple network cards in the future. The network card driver is loaded into the kernel as a mole, All the network card drivers supported by Linux are stored in the directory / lib / moles / (Linux version number) / net /, for example, the driver of Inter's 82559 series 10 / 100M self-adaptive boot network card is eepro100. O, 3Com's 3c509 isa network card is 3c509. O, dlink's PCI 10 network card is via Rhine. O, NE2000 compatible network card drivers are ne2k PCI. O and ne. O. after understanding these basic drivers, we can change the network card or add the network card by modifying the mole configuration file.
1. Modify the / etc / conf.moles file
this configuration file is an important parameter file to load the mole, Let's first look at a sample file
; / etc / conf.moles
alias eth0 eepro100
alias eth1 eepro100
this file is the content of conf.moles in a Linux system with two inter 82559 series network cards. The alias command indicates the name of the driver of the Ethernet port (such as eth0), If you use the command modprobe eth0, the system will automatically load eepro100. O into the kernel, So it is not necessary to use options in conf.moles to specify the IO address and interrupt number of the network card. However, corresponding to isa network card, you must specify the IO address or interrupt number of the hardware in conf.moles, as shown below, which indicates the conf.moles file of NE isa network card.
alias eth0 ne
Options ne IO = 0x300 IRQ = 5
after modifying the conf.moles file, You can use the command to load the mole, for example, the second network card to be inserted into the inter:
? Insmod / lib / moles / 2.2.14/net/eepro100. O
so that the mole eepro100. O can be loaded at the Ethernet port, You can also use the command to view the currently loaded mole information:
[ root@ice /Etc] # lsmod
mole size used by
eepro100 15652 (autoclean)
the returned result means that the currently loaded mole is eepro100, with 15652 bytes in size and two users, The method is to clear automatically.
2. Modify the / etc / lilo.conf file
in some relatively new Linux versions, because the operating system automatically detects all related hardware, it is not necessary to modify the / etc / lilo.conf file at this time, You can modify the lilo.conf file. Add the following command to the / etc / lilo.conf file:
append = & quot; ether=5,0x240,eth0 ether=7,0x300,eth1"<
the meaning of this command is that the IO address of eth0 is 0x240, the interrupt is 5, the IO address of eth1 is 0x300, and the interrupt is 7.
in fact, this statement comes from the parameter passed when the system boot image file,
Lilo: Linux ether = 5,0x240, eth0 ether = 7,0x300, eth1
this method can also make the Linux system configure two network cards, When using more than three network cards, you can follow the same method.
after configuring the network card, you should configure the TCP / IP parameters. In general, when installing the Linux system, you will be prompted to configure the network parameters, You can use the following commands:
? Ifconfig eth0 a.b.c.d netmask e.f.g.h
a.b.c.d is the IP address of eth0, and e.f.g.h is the netmask.
in fact, in Linux system, we can set multiple IP addresses for a network card. For example, the following command:
? Ifconfig eth0: 1 202.112.11.218 netmask 255.255.192
then, the following command is used to set the IP address of a network card, Use the command "ifconfig - a" to see the interfaces of all network interfaces:
eth0 link encap:Ethernet HWaddr 00:90:27:58:AF:1A
inet addr:202.112.13.204 Bcast :202.112.13.255 M ask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 M etric:1
RX packets:435510 errors :0 dropped:0 overruns :0 frame:2
TX packets:538988 errors :0 dropped:0 overruns :0 carrier:0
c ollisions:318683 txqueuelen :100
I nterrupt:10 Base address:0xc000
eth0:1 Link encap:Ethernet HWaddr 00:90:27:58:AF:1A
inet addr:202.112.11.218 Bcast :202.112.11.255 M ask:255.255.255.192
UP BROADCAST RUNNING MULTICAST MTU:1500 M etric:1
I nterrupt:10 Base address:0xc000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask :255.0.0.0
UP LOOPBACK RUNNING MTU:3924 M etric:1
RX packets:2055 errors :0 dropped:0 overruns :0 frame:0
TX packets:2055 errors :0 dropped:0 overruns :0 carrier:0
c ollisions:0 txqueuelen : 0
there are three network interfaces, eth0, eth0:1, lo, Eth0 is the real Ethernet interface. Eth0:1 and eth0 are the same network card, but they are bound with another address. Lo is the sending address<
eth0 and eth0:
1 the IP addresses of different network segments can be used, which is very useful when the same physical network segment uses different network addresses<
in addition, the network card has a mode of prosimc. In this mode, the network card will receive all the packets in the network. Some network monitoring tools under Linux, such as tcpmp and snort, all set the network card to hybrid mode.
the ifconfig command can change the IP address of the network card ring the running time, but if the system is restarted, the IP address of the network card will be changed, Linux still starts the network interface according to the original default settings
at this time, you can use netconfig or NETCONF command to reset the default network parameters. Netconfig command is to reconfigure the basic TCP / IP parameters, including whether to dynamically obtain IP address (dhcpd and BOOTP), IP address of network card, network mask, default gateway and preferred domain name server address
NETCONF command can configure all network parameters in detail, which is divided into three parts: client task, server task and other configuration. In the client configuration, it mainly includes the configuration of basic host (host name, valid domain name, network alias, IP address of corresponding network card, network mask, network device name, kernel driver of network device),
DNS address configuration, default gateway address configuration, NIS address configuration, IPX interface configuration, PPP / slip configuration, etc. In the server configuration, it mainly includes NFS configuration, DNS configuration, Apache webserver configuration, samba configuration and Wu ftpd configuration
. Among the other configuration options, one is about the host configuration in the / etc / hosts file, one is about the network configuration information in the / etc / networks file, and the last is about the configuration information using linuxconf
under the command of linuxconf, you can also configure the network information, but you can find that the linuxconf program calls NETCONF to configure the network<
in addition, the system configuration files about the network are stored in the / etc / sysconfig / network scripts directory.
examples are as follows:
:
& lt; br>& lt; br> <
ifcfg-eth0 * ifdown post * ifup aliases * ifup PPP *
ifcfg-eth1 * ifdown PPP * ifup IPX * ifup routes *
ifcfg lo * ifdown sl * ifup PLIP * ifup sl *
ifdown @ ifup @ ifup post * network functions
ifcfg-eth0 is the configuration information of Ethernet port eth0,
its contents are as follows:
device = & quot; eth0" /* Specify the network device name * /
IPADDR = & quot; 202.112.13.204" /* Indicate the IP address of the network device * /
netmask = & quot; 255.255.255.192" /* Specify network mask * /
Network = 202.112.13.192 / * specify network address * /
broadcast = 202.112.13.255 / * specify broadcast address * /
onboot = & quot; yes" /* Indicates whether the network card is activated at system startup * /
bootproto = & quot; none" /* Indicates whether to use BOOTP protocol * /
therefore, you can also modify this file to change network parameters under Linux[/ Size]
configuration of two network services
in this section, we do not introce the configuration of specific network servers (DNS, FTP, WWW, sendmail) in detail (that will be a huge space), but introce the files related to the configuration of Linux Network services.
1. Lilo configuration file
in Linux system, there is a system boot program, Lilo (Linux loadin) is used to realize the selective startup of multiple operating systems. Its configuration file is / etc / lilo.conf. In this configuration file, the configuration parameters of Lilo are mainly divided into two parts. One is the global configuration parameters, including setting the boot device, etc. the other is the local configuration parameters, It includes the configuration parameters of each boot image file.
I will not describe each parameter in detail here, but only two important parameters: password and restricted option. The password option adds password protection to each boot image file. As we all know, there is a single user mode in Linux system. In this mode, the, Users log in to the Linux system as super users. By adding parameters (Linux single or Linux init 0) ring Lilo boot, people can directly enter the single user mode super user environment without password, This will be very dangerous. So the password configuration option is added in lilo.conf to add password protection to each image file. You can use the password option in global mode (add the same password to all image files), or add a password to each indivial image file.
in this way, every time the system starts up, the, You may find it troublesome to enter the password every time. You can use the restricted option, which enables Lilo to check the password only when the parameters (such as Linux single) are entered ring Linux startup. These two options can greatly increase the security of the system, It is recommended to set them in lilo.conf file.
since password is stored in plaintext in / etc / lilo.conf file, it is necessary to change the attribute of / etc / lilo.conf file to only root readable (0400).
in addition, in the early version of Lilo, there was a limitation that boot sector must be stored in the first 1024 cylinder, which has been broken in Lilo version 2.51, After downloading and decompressing the latest version, use the command make & quot; After that, use the command make install to complete the installation.
note: physical security is the most basic security, even if the password protection is added in lilo.conf, if there is no physical security, the password protection can be used, Malicious intruders can use the boot floppy disk to start the Linux system.
2. The configuration file of domain name service
(1) / etc / host name stores the host name and domain name of the Linux system in this file. Example file
ice.xanet.e.cn
this file table
6. In other words, if you can turn the fan for a while and then stop.. It is estimated that the problem is memory
ASUS motherboard. If it is not supported by CPU. Or there's a problem. Just turn around. Just stop
try another memory..
ASUS motherboard. If it is not supported by CPU. Or there's a problem. Just turn around. Just stop
try another memory..
7. Yes, ASUS z87-k motherboard, inter Z87 chipset, has two yellow and two black four memory slots, can support four memory at the same time, the maximum memory capacity of 32g, so, you install 16g memory is certainly no problem, as for the compatibility between these several, you need to slowly test to know.
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