为什么tftp直接访问请求到不同网络接口的不同文件夹

为什么tftp直接访问请求到不同网络接口的不同文件夹

这是我的/etc/xinetd.d/tftp

service tftp
{
        socket_type             = dgram
        protocol                = udp 
        wait                    = yes 
        user                    = root
        server                  = /usr/sbin/in.tftpd
        server_args             = -s /tftpboot
        disable                 = no
        per_source              = 11
        cps                     = 100 2
        flags                   = IPv4
}

我的主机上有两个接口:

  1. 洛:127.0.0.1
  2. virbr1:192.168.122.1

我分别通过2个接口连接tftp服务器。

tftp 127.0.0.1
get somefile

该文件是从 /tftpboot 获取的

tftp 192.168.122.1
get somefile

该文件是从获取的/var/lib/tftp

我不知道这个/var/lib/tftp配置来自哪里。或者也许通过 192.168.122.1,tftp 服务器会回退到某些默认配置?


提到我也没有修改 /etc/xinetd.conf:

defaults
{
# The next two items are intended to be a quick access place to
# temporarily enable or disable services.
#
#       enabled         =
#       disabled        =

# Define general logging characteristics.
        log_type        = SYSLOG daemon info 
        log_on_failure  = HOST
        log_on_success  = PID HOST DURATION EXIT

# Define access restriction defaults
#
#       no_access       =
#       only_from       =
#       max_load        = 0
        cps             = 50 10
        instances       = 50
        per_source      = 10

# Address and networking defaults
#
#       bind            =
#       mdns            = yes
        v6only          = no

# setup environmental attributes
#
#       passenv         =
        groups          = yes
        umask           = 002

# Generally, banners are not used. This sets up their global defaults
#
#       banner          =
#       banner_fail     =
#       banner_success  =
}

includedir /etc/xinetd.d

答案1

我自己找到了答案,在我的配置中virbr1 interface,我为我的虚拟网络接口指定了 tftp 根。

<network>
<name>pxe_bridge</name>
<uuid>17970555-f3dc-40ee-a2af-16f0898a5ff6</uuid>

<forward mode='nat'/>
<bridge name='virbr1' stp='on' delay='0' />
<ip address='192.168.122.1' netmask='255.255.255.0'>
    <tftp root='/var/lib/tftp' />
    <dhcp>
    <range start='192.168.122.2' end='192.168.122.254' />
    <bootp file='pxelinux.0' />
    </dhcp>
</ip>
</network>

虽然我还是很迷茫

为什么有tftp配置网络接口

我也看到了tftp配置为了DHCP服务器

PXE 安装受益于这些功能。

但我还是觉得奇怪,有什么意见吗?

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