DNS & ICMP

[Bill]

Frame 15 (70 bytes on wire, 70 bytes captured)
    Arrival Time: Oct 20, 2005 16:15:42.583051000
    Time delta from previous packet: 0.156957000 seconds
    Time relative to first packet: 56.875494000 seconds
    Frame Number: 15
    Packet Length: 70 bytes
    Capture Length: 70 bytes
Ethernet II, Src: 00:0f:24:c9:5a:c2, Dst: 00:30:48:52:7e:6c
    Destination: 00:30:48:52:7e:6c (Supermic_52:7e:6c)
    Source: 00:0f:24:c9:5a:c2 (00:0f:24:c9:5a:c2)
    Type: IP (0x0800)
Internet Protocol, Src Addr: 207.162.16x.197 (207.162.16x.197), Dst Addr:
207.162.16x.11 (207.162.16x.11)
    Version: 4
    Header length: 20 bytes
    Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
        0000 00.. = Differentiated Services Codepoint: Default (0x00)
        .... ..0. = ECN-Capable Transport (ECT): 0
        .... ...0 = ECN-CE: 0
    Total Length: 56
    Identification: 0x42bf
    Flags: 0x00
        .0.. = Don't fragment: Not set
        ..0. = More fragments: Not set
    Fragment offset: 0
    Time to live: 126
    Protocol: ICMP (0x01)
    Header checksum: 0x13f0 (correct)
    Source: 207.162.166.197 (207.162.166.197)
    Destination: 207.162.160.11 (207.162.160.11)
Internet Control Message Protocol
    Type: 3 (Destination unreachable)
    Code: 3 (Port unreachable)
    Checksum: 0x3c0d (correct)
    Internet Protocol, Src Addr: 207.162.16x.11 (207.162.16x.11), Dst Addr:
207.162.16x.197 (207.162.16x.197)
        Version: 4
        Header length: 20 bytes
        Differentiated Services Field: 0x00 (DSCP 0x00: Default; ECN: 0x00)
            0000 00.. = Differentiated Services Codepoint: Default (0x00)
            .... ..0. = ECN-Capable Transport (ECT): 0
            .... ...0 = ECN-CE: 0
        Total Length: 238
        Identification: 0x0000
        Flags: 0x04
            .1.. = Don't fragment: Set
            ..0. = More fragments: Not set
        Fragment offset: 0
        Time to live: 62
        Protocol: UDP (0x11)
        Header checksum: 0x55e9 (correct)
        Source: 207.162.16x.11 (207.162.160.11)
        Destination: 207.162.16x.197 (207.162.166.197)
    User Datagram Protocol, Src Port: domain (53), Dst Port: kermit (1649)
        Source port: domain (53)
        Destination port: kermit (1649)
        Length: 218
        Checksum: 0xb96f




16:14:37.968636 207.162.16x.197 -> 207.162.16x.11 DNS Standard query A
img-cdn.mediaplex.com
16:14:37.969040 207.162.16x.11 -> 207.162.16x.197 DNS Standard query
response CNAME img.mediaplex.com.edgesuite.net CNAME a1470.g.akamai.net A
84.53.144.136 A 84.53.144.151
16:14:38.018391 207.162.16x.197 -> 207.162.16x.11 ICMP Destination
unreachable


16:14:45.707557 207.162.16x.197 -> 207.162.16x.11 ICMP Destination
unreachable
16:14:51.708089 207.162.16x.197 -> 207.162.16x.11 ICMP Destination
unreachable
16:14:55.543456 207.162.16x.197 -> 207.162.16x.11 ICMP Destination
unreachable
16:15:26.850696 207.162.16x.197 -> 207.162.16x.11 DNS Standard query A
m2.2mdn.net