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Bug
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Resolution: Not a bug
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Low
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None
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Discovery 3.1.1
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None
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1
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Severity 2 - Major
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Issue Summary
Not all usable IP addresses are included in the Discovery scan of a CIDR IP address
Environment
Discovery 2.29.0, Discovery 3.1.1
Steps to Reproduce
- Set up Insight Discovery as per this doc - Set up Insight Discovery.
- Configure the IP range in the scan settings with the modifier to scan all the usable IP addresses. For example, 192.168.178.0/23.
- Start a scan with the scan setting above and observe the number and the list of IP addresses generated.
Expected Results
The number of IP addresses generated is the number of usable IP addresses. For example, for the CIDR prefix of /23, 510 IP addresses are generated and scanned by the Insight Discovery tool
Actual Results
The number of IP addresses generated is incorrect for all CIDR prefix except /24. 192.168.178.0/23, for instance, has only 508 IP addresses generated and scanned. 192.168.178.255 and 192.168.179.0 are missing.
Here's another example where 1022 IP addresses are expected but only 1016 are generated. All the xxx.xxx.xxx.0 and xxx.xxx.xxx.255 usable IP addresses are excluded from the scan.
1/21/2022 7:20:45 PM : ScanSetting: 00001 with entire Range: 192.168.56.0/22 1/21/2022 7:20:45 PM : Generating list of IP's to scan from range: 192.168.56.0/22 1/21/2022 7:20:45 PM : Getting 1016 IP's to scan.
Workaround
Include the single IP addresses like
192.168.178.0/23;192.168.178.255;192.168.179.0
- is related to
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JSDSERVER-11333 Include x.x.x.0 and x.x.x.255 in the Discovery scan of a CIDR IP address
- Gathering Interest
[JSDSERVER-11052] Not all usable IP addresses are included in the Discovery scan of a CIDR IP address
| Link | New: This issue is related to JSDSERVER-11333 [ JSDSERVER-11333 ] |
| Resolution | New: Not a bug [ 12 ] | |
| Status | Original: In Progress [ 3 ] | New: Closed [ 6 ] |
| Status | Original: Gathering Impact [ 12072 ] | New: In Progress [ 3 ] |
| Assignee | New: vgedzhev [ 8a797fe2b442 ] |
| Support reference count | New: 1 |
| Status | Original: Needs Triage [ 10030 ] | New: Gathering Impact [ 12072 ] |
| Description |
Original:
h3. Issue Summary
Not all usable IP addresses are included in the Discovery scan of a CIDR IP address h3. Steps to Reproduce # Set up Insight Discovery as per [this doc - Set up Insight Discovery|https://confluence.atlassian.com/insightapps/set-up-insight-discovery-1085180655.html]. # Configure the [IP range in the scan settings|https://confluence.atlassian.com/insightapps/scan-settings-1085180664.html#Scansettings-IP-Range] with the modifier to scan all the usable IP addresses. For example, 192.168.178.0/23. # Start a scan with the scan setting above and observe the number and the list of IP addresses generated. h3. Expected Results The number of IP addresses generated is the number of usable IP addresses. For example, for the CIDR prefix of /23, 510 IP addresses are generated and scanned by the Insight Discovery tool h3. Actual Results The number of IP addresses generated is incorrect for all CIDR prefix except /24. 192.168.178.0/23, for instance, has only 508 IP addresses generated and scanned. 192.168.178.255 and 192.168.179.0 are missing. Here's another example where 1022 IP addresses are expected but only 1016 are generated. All the xxx.xxx.xxx.0 and xxx.xxx.xxx.255 usable IP addresses are excluded from the scan. {code} 1/21/2022 7:20:45 PM : ScanSetting: 00001 with entire Range: 192.168.56.0/22 1/21/2022 7:20:45 PM : Generating list of IP's to scan from range: 192.168.56.0/22 1/21/2022 7:20:45 PM : Getting 1016 IP's to scan. {code} h3. Workaround Include the single IP addresses like {code} 192.168.178.0/23;192.168.178.255;192.168.179.0 {code} |
New:
h3. Issue Summary
Not all usable IP addresses are included in the Discovery scan of a CIDR IP address h3. Environment Discovery 2.29.0, Discovery 3.1.1 h3. Steps to Reproduce # Set up Insight Discovery as per [this doc - Set up Insight Discovery|https://confluence.atlassian.com/insightapps/set-up-insight-discovery-1085180655.html]. # Configure the [IP range in the scan settings|https://confluence.atlassian.com/insightapps/scan-settings-1085180664.html#Scansettings-IP-Range] with the modifier to scan all the usable IP addresses. For example, 192.168.178.0/23. # Start a scan with the scan setting above and observe the number and the list of IP addresses generated. h3. Expected Results The number of IP addresses generated is the number of usable IP addresses. For example, for the CIDR prefix of /23, 510 IP addresses are generated and scanned by the Insight Discovery tool h3. Actual Results The number of IP addresses generated is incorrect for all CIDR prefix except /24. 192.168.178.0/23, for instance, has only 508 IP addresses generated and scanned. 192.168.178.255 and 192.168.179.0 are missing. Here's another example where 1022 IP addresses are expected but only 1016 are generated. All the xxx.xxx.xxx.0 and xxx.xxx.xxx.255 usable IP addresses are excluded from the scan. {code} 1/21/2022 7:20:45 PM : ScanSetting: 00001 with entire Range: 192.168.56.0/22 1/21/2022 7:20:45 PM : Generating list of IP's to scan from range: 192.168.56.0/22 1/21/2022 7:20:45 PM : Getting 1016 IP's to scan. {code} h3. Workaround Include the single IP addresses like {code} 192.168.178.0/23;192.168.178.255;192.168.179.0 {code} |