Session Report
Summary:
Test run at: 2016-10-16 11:11:54 GMT
Client Prefix (v4): 185.73.147.x/24
Client AS (v4): 59743 (XAKT-AS)
IPv4 Probes: 105
| Outbound spoofing summary (from the client to our server) |
|---|
| Source address type |
IPv4 |
|---|
| Private -
RFC1918 |
unknown |
| Routable |
unknown |
| 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 (185.73.147.x/24) can spoof 1023 neighboring addresses (within your /22 prefix)
| Spoofed source address (anon) | Prefix
Length | ASN of spoofed
source address | Received |
|---|
| 185.73.147.x/24 | /31 | 59743 | yes |
| 185.73.147.x/24 | /30 | 59743 | yes |
| 185.73.147.x/24 | /29 | 59743 | yes |
| 185.73.147.x/24 | /28 | 59743 | yes |
| 185.73.147.x/24 | /27 | 59743 | yes |
| 185.73.147.x/24 | /26 | 59743 | yes |
| 185.73.147.x/24 | /25 | 59743 | yes |
| 185.73.147.x/24 | /24 | 59743 | yes |
| 185.73.146.x/24 | /23 | 59743 | yes |
| 185.73.145.x/24 | /22 | 59743 | yes |
| 185.73.151.x/24 | /21 | 58246 | no |
| 185.73.155.x/24 | /20 | 56595 | no |
| 185.73.131.x/24 | /19 | 8100 | no |
| 185.73.179.x/24 | /18 | 196929 | no |
| 185.73.211.x/24 | /17 | 201029 | no |
| 185.73.19.x/24 | /16 | 61267 | no |
| 185.72.147.x/24 | /15 | 201499 | no |
| 185.75.147.x/24 | /14 | 200562 | no |
| 185.77.147.x/24 | /13 | 8290 | no |
| 185.65.147.x/24 | /12 | 9009 | no |
| 185.89.147.x/24 | /11 | 200979 | no |
| 185.105.147.x/24 | /10 | 3303 | no |
| 185.9.147.x/24 | /9 | 56694 | no |
| 185.201.147.x/24 | /8 | UNROUTED | 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 2 IP hop(s).
Summary:
The results from all tests are aggregated to produce a summary
"State of IP Spoofing" report.
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Users Mailing List for discussion and announcements.
