Session Report
Summary:
Test run at: 2018-03-08 16:42:39 GMT
Client Prefix (v4): 31.148.220.x/24
Client AS (v4): 14576 (HOSTING-SOLUTIONS)
IPv4 Probes: 102
Outbound spoofing summary (from the client to our server) |
Source address type |
IPv4 |
Private -
RFC1918 |
blocked |
Routable |
blocked |
Largest spoofable neighbor prefix length |
/24 |
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 (31.148.220.x/24) can spoof 255 neighboring addresses (within your /24 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
31.148.220.x/24 | /31 | 14576 | yes |
31.148.220.x/24 | /30 | 14576 | yes |
31.148.220.x/24 | /29 | 14576 | yes |
31.148.220.x/24 | /28 | 14576 | yes |
31.148.220.x/24 | /27 | 14576 | yes |
31.148.220.x/24 | /26 | 14576 | yes |
31.148.220.x/24 | /25 | 14576 | yes |
31.148.220.x/24 | /24 | 14576 | yes |
31.148.221.x/24 | /23 | 51962 | no |
31.148.222.x/24 | /22 | 200122 | no |
31.148.216.x/24 | /21 | 62444 | no |
31.148.212.x/24 | /20 | 44546 | no |
31.148.204.x/24 | /19 | 44975 | no |
31.148.252.x/24 | /18 | 47702 | no |
31.148.156.x/24 | /17 | 29256 | no |
31.148.92.x/24 | /16 | 50923 | no |
31.149.220.x/24 | /15 | 1136 | no |
31.150.220.x/24 | /14 | 9145 | no |
31.144.220.x/24 | /13 | 21497 | no |
31.156.220.x/24 | /12 | 30722 | no |
31.132.220.x/24 | /11 | 48481 | no |
31.180.220.x/24 | /10 | 12389 | no |
31.212.220.x/24 | /9 | 3320 | no |
31.20.220.x/24 | /8 | 31615 | 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
able to spoof routable, non-adjacent source addresses through the
first 1 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
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