centos 7禁用ipv6
修改grub,在引導時就不載入IPV6模組
/etc/default/grub
GRUB_CMDLINE_LINUX="ipv6.disable=1 ..."
grub2-mkconfig -o {grub.cfg 路徑}
路徑可為:
/boot/grub2/grub.cfg
或
/boot/efi/EFI/centos/grub.cfg
方法二:
禁用IPV6的操作步驟(不如方法一徹底, 推薦)
Step 1: add this rule in /etc/sysctl.conf : net.ipv6.conf.all.disable_ipv6=1
Step 2: add this rule in /etc/sysconfig/network: NETWORKING_IPV6=no
Step 3: add this setting for each nic X (X is the corresponding number for each nic) in /etc/sysconfig/network-scripts/ifcfg-ethX: IPV6INIT=no
Step 4: disable the ip6tables service : chkconfig ip6tables off
Step 5: Reload the sysctl configuration:
# sysctl -p
or
# reboot
注意:禁用IPV6後,可能會導致某些服務無法啟動,比如VSFTP,對於VSFTP,需要修改/etc/vsftpd/vsftpd.conf檔案中的listen和listen_ipv6兩個選項:
listen=YES
listen_ipv6=NO