产品与服务

1747-L551美国AB模块CPU

1756-L55
1756-L55M12
1756-L55M13
1756-L55M14
1756-L55M16
1756-L55M22
1756-L55M23
1756-L55M24
1756-L60M03SE
1756-L61
1756-L61S
1756-L62
1756-L62S
1756-L63
1756-L64
1756-LSP
1756-M12
1756-M13
1756-M14
1756-M16
1756-M22
1756-M23
1756-M24
1784-CF64
1756-DNB
1756-A10
1756-A13
1756-A17
1756-A4
1756-A7
1756-IA16
1756-IA16I
1756-IA32
1756-IA8D
1756-IB16
1756-IB16D
1756-IB16I
1756-IB16ISOE
1756-IB32
1756-IC16
1756-IG16
1756-IH16I
1756-IH16ISOE
1756-IM16I
1756-IN16
1756-IV16
1756-IV32
1756-OA16
1756-OA16I
1756-OA8
1756-OA8D
1756-OA8E
1756-OB16D
1756-OB16E
1756-OB16I
1756-OB16IS
1756-OB32
1756-OB8
1756-OB8EI
1756-OB8I
1756-OC8
1756-OH8I
1756-ON8
1756-OV16E
1756-OV32E
1756-OW16I
1756-OX8I
1756-IF16
1756-IF4FXOF2F
1756-IF6CIS
1756-IF6I
1756-IF8
1756-IF8H
1756-IR6I
1756-IT6I
1756-IT6I2
1756-OF4
1756-OF6CI
1756-OF6VI
1756-OF8
1756-OF8H
1756-OG16
1756-CFM
1756-HSC
1756-HYD02
1756-PLS
1756-M02AE
1756-M02AS
1756-M03SE
1756-M08SE
1756-M16SE
1756-DMAF
1756-DMCF001
1756-DMCF003
1756-DMCF010
1756-DMCF030
1756-TBCH
1756-TBE
1756-TBNH
1756-TBS6H
1756-TBSH
1756-CN2R
1756-CNB
1756-CNBR
1756-EN2T
1756-ENBT
1756-EWEB
1756-TC15
1756-DH485
1756-DHRIO
1756-CPR2
1756-PA72
1756-PA75
1756-PB72
1756-PB75
1756-PBR2
1756-PC75
1756-PH75
1756-PSCA2

优点:

1、使得内核更加紧凑灵活.

2、修改内核时, 不必重新编译整个内核.

3、模块可以不依赖于某个固定的硬件平台,即使它依赖于某系统特殊的硬件特点

4、模块的一旦被链接到内核,它的作用和静态链接的内核目标代码完全等价.所以当调用模块函数时,无须显式的消息传递.

5、截获.

缺点:

模块机制带来安全上的

1、修改输出符号表.

2、通过修改系统调用,使模块自己隐性.

3、文件操作.

4、修改文件属主.

5、隐藏进程.

6、重定向.

7、通过修改系统调用sys_socketcall,使得系统在收到指定数据包后打开后门

8、TTY劫持.

9、病毒.