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centos端口限速(centos限制网速)

服务器维护
2023-07-04 11:27:31
来源:网络

1、CentOS怎样设置限速?
2、求助centos7网卡问题
3、centos7 下怎么限制某个端口只对外网公开
4、centos7.3系统怎么开启1-60000端口??
5、请问CentOS怎么把在防火墙把除了22、80、443端口外的1-9999端口禁用掉?
6、centos安全策略-禁用和关闭常见端口

CentOS怎样设置限速?

用tc可以限速

DOWNLOAD=800Kbit

UPLOAD=160Kbit

INET=192.168.0.

IPS=1

IPE=253

ServerIP=254

IDEV=eth0

ODEV=ppp0

/sbin/tc qdisc del dev $IDEV root handle 10:

/sbin/tc qdisc del dev $ODEV root handle 20:

/sbin/tc qdisc add dev $IDEV root handle 10: cbq bandwidth 100Mbit avpkt 1000

/sbin/tc qdisc add dev $ODEV root handle 20: cbq bandwidth 1Mbit avpkt 1000

/sbin/tc class add dev $IDEV parent 10:0 classid 10:1 cbq bandwidth 100Mbit rate 100Mbit allot 1514 weight 1Mbit prio 8 maxburst 20 avpkt 1000

/sbin/tc class add dev $ODEV parent 20:0 classid 20:1 cbq bandwidth 1Mbit rate 1Mbit allot 1514 weight 10Kbit prio 8 maxburst 20 avpkt 1000

/sbin/tc class add dev $IDEV parent 10:1 classid 10:10 cbq bandwidth 100Mbit rate 95Mbit allot 1514 weight 20Kbit prio 5 maxburst 20 avpkt 1000 bounded

/sbin/tc qdisc add dev $IDEV parent 10:10 sfq quantum 1514b perturb 15

/sbin/tc filter add dev $IDEV parent 10:0 protocol ip prio 50 u32 match ip src $INET$ServerIP flowid 10:10

COUNTER=$IPS

while [ $COUNTER -le $IPE ]

/sbin/tc class add dev $IDEV parent 10:1 classid 10:1$COUNTER cbq bandwidth 100Mbit rate $DOWNLOAD allot 1514 weight 20Kbit prio 5 maxburst 20 avpkt 1000 bounded

/sbin/tc qdisc add dev $IDEV parent 10:1$COUNTER sfq quantum 1514b perturb 15

/sbin/tc filter add dev $IDEV parent 10:0 protocol ip prio 100 u32 match ip dst $INET$COUNTER flowid 10:1$COUNTER

COUNTER=` expr $COUNTER + 1 `

done

COUNTER=$IPS

while [ $COUNTER -le $IPE ]

/sbin/tc class add dev $ODEV parent 20:1 classid 20:1$COUNTER cbq bandwidth 1Mbit rate $UPLOAD allot 1514 weight 4Kbit prio 5 maxburst 20 avpkt 1000 bounded

/sbin/tc qdisc add dev $ODEV parent 20:1$COUNTER sfq quantum 1514b perturb 15

/sbin/tc filter add dev $ODEV parent 20:0 protocol ip prio 100 handle $COUNTER fw classid 20:1$COUNTER

COUNTER=` expr $COUNTER + 1 `

done

NIP=78

ND=200Kbit

NU=50Kbit

/sbin/tc class change dev $IDEV parent 10:1 classid 10:1$NIP bandwidth 100Mbit rate $ND allot 1514 weight 20Kbit prio 5 maxburst 20 avpkt 1000 bounded

/sbin/tc class change dev $ODEV parent 20:1 classid 20:1$NIP cbq bandwidth 1Mbit rate $NU allot 1514 weight 4Kbit prio 5 maxburst 20 avpkt 1000 bounded

NIP=1

ND=1500Kbit

NU=500Kbit

/sbin/tc class change dev $IDEV parent 10:1 classid 10:1$NIP bandwidth 100Mbit rate $ND allot 1514 weight 20Kbit prio 5 maxburst 20 avpkt 1000 bounded

/sbin/tc class change dev $ODEV parent 20:1 classid 20:1$NIP cbq bandwidth 1Mbit rate $NU allot 1514 weight 4Kbit prio 5 maxburst 20 avpkt 1000 bounded

COUNTER=$IPS

while [ $COUNTER -lt $IPE ]

iptables -t mangle -A PREROUTING -i $IDEV -s $INET$COUNTER -j MARK --set-mark $COUNTER

COUNTER=` expr $COUNTER + 1 `

done

iptables -t nat -A POSTROUTING -o $EXTIF -s 192.168.0.0/24 -j MASQUERADE

求助centos7网卡问题

解决CentOS7网卡端口出现紊乱的问题

最近项目上，遇到一个问题，让我们很是没办法，就是Dell R920 安装上CentOS7的系统，做完Bonding后，发现端口重启系统后会紊乱，过程如下：

端口紊乱情况

主机上一共配置了两张万兆两口的网卡和一张千兆四口的网卡，其中不同万兆卡上，两端口做Bonding，同时千兆卡上也挑了间隔的两口做Bonding，大概如下情况：、

eth0,eth1,eth2,eth4千兆端口，eth4,eth5,eth6,eth7是万兆端口，这时经常紊乱是eth4,eth4的端口，两端口变更，使得做了bonding的端口无法生效

CentOS7的端口命名规则

原来CentOS6之前的网卡端口命名都是eth的，CentOS7之后千兆网口已经变更成随机的em0...emN或是ens01(N=整数)，万兆网口则变成p1p2等形式，要修改为eth的模式步骤如下：

a.编辑文件

vi /etc/sysconfig/grub

GRUB_TIMEOUT=5

GRUB_DISTRIBUTOR="$(sed 's, release .*$,,g' /etc/system-release)"

GRUB_DEFAULT=saved

GRUB_DISABLE_SUBMENU=true

GRUB_TERMINAL_OUTPUT="console"

GRUB_CMDLINE_LINUX="rd.lvm.lv=centos/swap vconsole.font=latarcyrheb-sun16 net.ifnames=0 biosdevname=0 rd.lvm.lv=centos/root crashkernel=auto vconsole.keymap=us rhgb quiet"

GRUB_DISABLE_RECOVERY="true"

“以上标红色的值是修改为eth的基础”

b.执行命令生效

grub2-mkconfig -o /boot/grub2/grub.cfg

c.增加规划文件

vi /etc/udev/rules.d/70-persistent-net.rules

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="78:2b:cb:xx:xx:01", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="78:2b:cb:xx:xx:02", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="78:2b:cb:xx:xx:03", ATTR{type}=="1", KERNEL=="eth*", NAME="eth2"

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="78:2b:cb:xx:xx:04", ATTR{type}=="1", KERNEL=="eth*", NAME="eth4"

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1b:21:xx:xx:a1", ATTR{type}=="1", KERNEL=="eth*", NAME="eth4"

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1b:21:xx:xx:a0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth5"

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:60:6e:xx:xx:f6", ATTR{type}=="1", KERNEL=="eth*", NAME="eth6"

SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:60:6e:xx:xx:f7", ATTR{type}=="1", KERNEL=="eth*", NAME="eth7"

“以上MAC地址与网卡端口对应”

总结：以上方法并不能解决网口紊乱问题，因为官方文档都要求bond的网卡都不需要写MAC地址，所以最后我们尝试使在每个/etc/sysconfig/network-scripts/ifcfg-eth*网卡配置文件上写上HWADDR，重启有7-8遍，做ethtool检查几次，发现在没有问题，所以建议遇到同样问题同学，可以尝试一下这种方法