Session Report
Summary:
Test run at: 2019-08-16 17:21:35 GMT
Client Prefix (v4): 91.200.102.x/24
Client AS (v4): 30823 (COMBAHTON)
IPv4 Probes: 96
Outbound spoofing summary (from the client to our server) |
Source address type |
IPv4 |
Private -
RFC1918 |
✔ | blocked |
Routable |
✔ | blocked |
Largest spoofable neighbor prefix length |
/22 |
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 (91.200.102.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)
Spoofed source address (anon) | Prefix Length | ASN of spoofed source address | Received |
91.200.102.x/24 | /31 | 30823 | yes |
91.200.102.x/24 | /30 | 30823 | yes |
91.200.102.x/24 | /29 | 30823 | yes |
91.200.102.x/24 | /28 | 30823 | yes |
91.200.102.x/24 | /27 | 30823 | yes |
91.200.102.x/24 | /26 | 30823 | yes |
91.200.102.x/24 | /25 | 30823 | yes |
91.200.102.x/24 | /24 | 30823 | yes |
91.200.103.x/24 | /23 | 30823 | yes |
91.200.100.x/24 | /22 | 30823 | yes |
91.200.98.x/24 | /21 | UNROUTED | no |
91.200.110.x/24 | /20 | 8893 | no |
91.200.118.x/24 | /19 | 43885 | no |
91.200.70.x/24 | /18 | 204864 | no |
91.200.38.x/24 | /17 | 43769 | no |
91.200.230.x/24 | /16 | 12958 | no |
91.201.102.x/24 | /15 | UNROUTED | no |
91.202.102.x/24 | /14 | 200909 | no |
91.204.102.x/24 | /13 | 47378 | no |
91.192.102.x/24 | /12 | 51395 | no |
91.216.102.x/24 | /11 | 4589 | no |
91.232.102.x/24 | /10 | 57488 | no |
91.136.102.x/24 | /9 | 9115 | no |
91.72.102.x/24 | /8 | 15802 | 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.
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