Session Report
Summary:
Test run at: 2020-05-07 21:23:57 GMT
Client Prefix (v4): 176.123.7.x/24
Client AS (v4): 200019 (AlexHost)
IPv4 Probes: 75
Outbound spoofing summary (from the client to our server) |
Source address type |
IPv4 |
Private -
RFC1918 |
blocked |
Routable |
blocked |
Largest spoofable neighbor prefix length |
/21 |
Spoof status key |
---|
received | Spoofed packet was received. | ✔ | Pattern of tests from this IP block indicates a switch from allowing spoofing to blocking it. |
rewritten | Spoofed packet was received, but the source address was changed en route. |
blocked | Spoofed packet was not received, but unspoofed packet was. |
unknown | Neither spoofed nor unspoofed packet was received. |
IPv4 Adjacent Netblock Testing:
Your host (176.123.7.x/24) can spoof 2047 neighboring addresses (within your /21 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
176.123.7.x/24 | /31 | 200019 | yes |
176.123.7.x/24 | /30 | 200019 | yes |
176.123.7.x/24 | /29 | 200019 | yes |
176.123.7.x/24 | /28 | 200019 | yes |
176.123.7.x/24 | /27 | 200019 | yes |
176.123.7.x/24 | /26 | 200019 | yes |
176.123.7.x/24 | /25 | 200019 | yes |
176.123.7.x/24 | /24 | 200019 | yes |
176.123.6.x/24 | /23 | 200019 | yes |
176.123.5.x/24 | /22 | 200019 | yes |
176.123.3.x/24 | /21 | 200019 | yes |
176.123.15.x/24 | /20 | 42306 | no |
176.123.23.x/24 | /19 | 30873 | no |
176.123.39.x/24 | /18 | 61124 | no |
176.123.71.x/24 | /17 | 59506 | no |
176.123.135.x/24 | /16 | 45054 | no |
176.122.7.x/24 | /15 | 203716 | no |
176.121.7.x/24 | /14 | 41244 | no |
176.127.7.x/24 | /13 | 3303 | no |
176.115.7.x/24 | /12 | 58350 | no |
176.107.7.x/24 | /11 | 48320 | no |
176.91.7.x/24 | /10 | UNROUTED | no |
176.59.7.x/24 | /9 | 15378 | no |
176.251.7.x/24 | /8 | 5607 | no |
Meaning of status in Received column:
no | Packets spoofed from adjacent netblock were not received, probably due to blocking |
yes | Packets spoofed from adjacent netblock were received (but that netblock is within the source AS) |
IPv4 Outbound Filtering Depth:
The tracefilter test found your host
unable to spoof routable, non-adjacent source addresses through
even the first IP hop.
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
Feedback:
We welcome questions and feedback to the Spoofer Information Mailing List
and invite users to join the Spoofer
Users Mailing List for discussion and announcements.