网络安全 频道

网管常用的网络命令集3

nbtstat -R 清除名称缓存,然后从 Lmhosts 文件重新加载。

  nbtstat -RR 释放在 WINS 服务器上注册的 NetBIOS 名称,然后刷新它们的注册。

  nbtstat -a name 对 name 指定的计算机执行 NetBIOS 适配器状态命令。适配器状态命令将返回计算机的本地 NetBIOS 名称表,以及适配器的媒体访问控制地址。

  nbtstat -S 列出当前的 NetBIOS 会话及其状态(包括统计),如下例所示:

  NetBIOS connection table

  Local name State In/out Remote Host Input Output

  ------------------------------------------------------------------

  CORP1 <00> Connected Out CORPSUP1<20> 6MB 5MB

  CORP1 <00> Connected Out CORPPRINT<20> 108KB 116KB

  CORP1 <00> Connected Out CORPSRC1<20> 299KB 19KB

  CORP1 <00> Connected Out CORPEMAIL1<20> 324KB 19KB

  CORP1 <03> Listening

  使用 netstat 显示连接统计

  可以使用 netstat 命令显示协议统计信息和当前的 TCP/IP 连接。netstat -a 命令将显示所有连接,而 netstat -r 显示路由表和活动连接。netstat -e 命令将显示Ethernet 统计信息,而 netstat -s 显示每个协议的统计信息。如果使用 netstat -n,则不能将地址和端口号转换成名称。下面是 netstat 的输出示例:

  C:/>netstat -e

  Interface Statistics

  Received Sent

  Bytes 3995837940 47224622

  Unicast packets 120099 131015

  Non-unicast packets 7579544 3823

  Discards 0 0

  Errors 0 0

  Unknown protocols 363054211

  C:/>netstat -a

  Active Connections

  Proto Local Address Foreign Address State

  TCP CORP1:1572 172.16.48.10:nbsession ESTABLISHED

  TCP CORP1:1589 172.16.48.10:nbsession ESTABLISHED

  TCP CORP1:1606 172.16.105.245:nbsession ESTABLISHED

  TCP CORP1:1632 172.16.48.213:nbsession ESTABLISHED

  TCP CORP1:1659 172.16.48.169:nbsession ESTABLISHED

  TCP CORP1:1714 172.16.48.203:nbsession ESTABLISHED

  TCP CORP1:1719 172.16.48.36:nbsession ESTABLISHED

  TCP CORP1:1241 172.16.48.101:nbsession ESTABLISHED

  UDP CORP1:1025 *:*

  UDP CORP1:snmp *:*

  UDP CORP1:nbname *:*

  UDP CORP1:nbdatagram *:*

  UDP CORP1:nbname *:*

  UDP CORP1:nbdatagram *:*

  C:/>netstat -s

  IP Statistics

  Packets Received = 5378528

  Received Header Errors = 738854

  Received Address Errors = 23150

  Datagrams Forwarded = 0

  Unknown Protocols Received = 0

  Received Packets Discarded = 0

  Received Packets Delivered = 4616524

  Output Requests = 132702

  Routing Discards = 157

  Discarded Output Packets = 0

  Output Packet No Route = 0

  Reassembly Required = 0

  Reassembly Successful = 0

  Reassembly Failures =

  Datagrams Successfully Fragmented = 0

  Datagrams Failing Fragmentation = 0

  Fragments Created = 0

  ICMP Statistics

  Received Sent

  Messages 693 4

  Errors 0 0

  Destination Unreachable 685 0

  Time Exceeded 0 0

  Parameter Problems 0 0

  Source Quenches 0 0

  Redirects 0 0

  Echoes 4 0

  Echo Replies 0 4

  Timestamps 0 0

  Timestamp Replies 0 0

  Address Masks 0 0

  Address Mask Replies 0 0

  TCP Statistics

  Active Opens = 597

  Passive Opens = 135

  Failed Connection Attempts = 107
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