系统管理工具包: 网络扫描
2008-11-11 08:28:13 来源:WEB开发网对于所扫描的数据包内的所有行,使用协议级别作为前缀。在这个示例中,您可以看到原始以太网、IP 和 TCP 数据包,包括源、目标主机的信息以及数据包选项。
在远程过程调用 (RPC) 级别,您记录下 NFS 请求的信息,然后在 NFS 文件中,您可以获得实际交换的数据。在这个示例中,您将看到该文件的具体信息(一般是在列出目录期间),并且您可以看到文件的类型、权限以及修改时间信息。
清单 6 显示了域名服务器 (DNS) 查找某个主机名期间的输出。
清单 6. DNS 查找某个主机名期间的输出
ETHER: ----- Ether Header -----
ETHER:
ETHER: Packet 2 arrived at 10:05:19.05284
ETHER: Packet size = 155 bytes
ETHER: Destination = 0:2:11:90:15:31,
ETHER: Source = 0:16:cb:85:2d:15,
ETHER: Ethertype = 0800 (IP)
ETHER:
IP: ----- IP Header -----
IP:
IP: Version = 4
IP: Header length = 20 bytes
IP: Type of service = 0x00
IP: xxx. .... = 0 (precedence)
IP: ...0 .... = normal delay
IP: .... 0... = normal throughput
IP: .... .0.. = normal reliability
IP: .... ..0. = not ECN capable transport
IP: .... ...0 = no ECN congestion experienced
IP: Total length = 141 bytes
IP: Identification = 53767
IP: Flags = 0x0
IP: .0.. .... = may fragment
IP: ..0. .... = last fragment
IP: Fragment offset = 0 bytes
IP: Time to live = 64 seconds/hops
IP: Protocol = 17 (UDP)
IP: Header checksum = 267b
IP: Source address = 192.168.0.110, narcissus.mcslp.pri
IP: Destination address = 192.168.0.31, ultra3
IP: No options
IP:
UDP: ----- UDP Header -----
UDP:
UDP: Source port = 53
UDP: Destination port = 46232
UDP: Length = 121
UDP: Checksum = 0C31
UDP:
DNS: ----- DNS Header -----
DNS:
DNS: Response ID = 55625
DNS: AA (Authoritative Answer) RA (Recursion Available)
DNS: Response Code: 0 (OK)
DNS: Reply to 1 question(s)
DNS: Domain Name: www.mcslp.pri.
DNS: Class: 1 (Internet)
DNS: Type: 28 (IPv6 Address)
DNS:
DNS: 2 answer(s)
DNS: Domain Name: www.mcslp.pri.
DNS: Class: 1 (Internet)
DNS: Type: 5 (Canonical Name)
DNS: TTL (Time To Live): 86400
DNS: Canonical Name: narcissus.mcslp.pri.
DNS:
DNS: Domain Name: narcissus.mcslp.pri.
DNS: Class: 1 (Internet)
DNS: Type: 28 (IPv6 Address)
DNS: TTL (Time To Live): 86400
DNS: IPv6 Address: fe80::216:cbff:fe85:2d15
DNS:
DNS: 1 name server resource(s)
DNS: Domain Name: mcslp.pri.
DNS: Class: 1 (Internet)
DNS: Type: 2 (Authoritative Name Server)
DNS: TTL (Time To Live): 86400
DNS: Authoritative Name Server: narcissus.mcslp.pri.
DNS:
DNS: 1 additional record(s)
DNS: Domain Name: narcissus.mcslp.pri.
DNS: Class: 1 (Internet)
DNS: Type: 1 (Address)
DNS: TTL (Time To Live): 86400
DNS: Address: 192.168.0.110
DNS:
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