ipv4和tcp区别
时间: 2023-11-17 09:01:23 浏览: 56
IPv4和TCP是两个不同的概念,IPv4是一种网络协议,而TCP是一种传输协议。IPv4是Internet Protocol version 4的缩写,是Internet上使用最广泛的一种网络协议,它定义了Internet上的数据传输格式和路由方式。而TCP是Transmission Control Protocol的缩写,是一种面向连接的、可靠的、基于字节流的传输层协议,它负责在数据传输前建立连接、保证数据传输的可靠性、流量控制和拥塞控制等。
因此,IPv4和TCP是两个不同的概念,IPv4是网络层协议,而TCP是传输层协议。
相关问题
net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syncookies = 1 net.ipv4.tcp_syncookies = 1net.ipv4.tcp_syn
这是一段 Linux 内核参数设置,其中 "net.ipv4.tcp_syncookies" 是用于启用 TCP SYN Cookies 的参数,值为 1 表示启用。这是一种防止 SYN Flood 攻击的技术。这段代码重复了很多次,可以简化为 "net.ipv4.tcp_syncookies = 1"。
net.ipv4.tcp_keepalive_time net.ipv4.tcp_keepalive_intvl net.ipv4.tcp_keepalive_probes参数在Linux 7 和 Linux 8 中有区别吗
在Linux 7和Linux 8中,net.ipv4.tcp_keepalive_time、net.ipv4.tcp_keepalive_intvl和net.ipv4.tcp_keepalive_probes这三个参数的含义和作用是相同的,都是用于控制TCP的keepalive机制的参数。
但是,在默认值和取值范围方面存在一些区别。具体来说,Linux 7中net.ipv4.tcp_keepalive_time的默认值为7200秒(2小时),net.ipv4.tcp_keepalive_intvl的默认值为75秒,net.ipv4.tcp_keepalive_probes的默认值为9次。而在Linux 8中,默认值和取值范围都有所变化,具体取决于内核版本和网络配置。
需要注意的是,在实际应用中,这三个参数的取值应该根据具体的应用场景和网络状况进行调整,而不是仅仅依赖于默认值或取值范围。