> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/analytics-alerts/alerts-by-name/rare-connection-to-external-ip-address-or-host-by-an-application-using-rmi-iiop-or-ldap-protocol.md).
# Rare connection to external IP address or host by an application using RMI-IIOP or LDAP protocol
### Synopsis
| Field | Value |
| -------------------- | ---------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 1 Day |
| Required Data | Palo Alto Networks Url Logs |
| ATT\&CK Tactic | Command and Control (TA0011) |
| ATT\&CK Technique | Application Layer Protocol (T1071) |
| Severity | Informational |
### Description
A process made a connection to an external IP address or host that is rarely connected to by the organization.
### Attacker's Goals
Connect to a server to retrieve commands or exfiltrate data.
### Investigative actions
Check whether the process was injected or otherwise subverted for malicious use.
### Variations
Rare connection to external IP address or host by a java application using LDAP protocol
**Synopsis**
| Field | Value |
| ----------------- | ---------------------------------- |
| ATT\&CK Tactic | Command and Control (TA0011) |
| ATT\&CK Technique | Application Layer Protocol (T1071) |
| Severity | Medium |
**Description**
A Java Process that never created LDAP connection before connected to an external IP address or host, which is rarely connected to from the organization using LDAP protocol.
**Attacker's Goals**
Connect to a server to retrieve commands or exfiltrate data.
**Investigative actions**
Check whether the process was injected or otherwise subverted for malicious use.
Rare connection to external IP address or host by a java application using LDAP protocol
**Synopsis**
| Field | Value |
| ----------------- | ---------------------------------- |
| ATT\&CK Tactic | Command and Control (TA0011) |
| ATT\&CK Technique | Application Layer Protocol (T1071) |
| Severity | Medium |
**Description**
A Java Process that never created RMI-IIOP connection before connected to an external IP address or host, which is rarely connected to from the organization using LDAP protocol.
**Attacker's Goals**
Connect to a server to retrieve commands or exfiltrate data.
**Investigative actions**
Check whether the process was injected or otherwise subverted for malicious use.
Rare connection to external IP address or host by a java application using LDAP protocol
**Synopsis**
| Field | Value |
| ----------------- | ---------------------------------- |
| ATT\&CK Tactic | Command and Control (TA0011) |
| ATT\&CK Technique | Application Layer Protocol (T1071) |
| Severity | Low |
**Description**
A Java Process connected to an external IP address or host, which is rarely connected to from the organization using LDAP protocol.
**Attacker's Goals**
Connect to a server to retrieve commands or exfiltrate data.
**Investigative actions**
Check whether the process was injected or otherwise subverted for malicious use.
Rare connection to external IP address or host by a java application using RMI-IIOP protocol
**Synopsis**
| Field | Value |
| ----------------- | ---------------------------------- |
| ATT\&CK Tactic | Command and Control (TA0011) |
| ATT\&CK Technique | Application Layer Protocol (T1071) |
| Severity | Low |
**Description**
A Java Process connected to an external IP address or host, which is rarely connected to from the organization using RMI-IIOP protocol.
**Attacker's Goals**
Connect to a server to retrieve commands or exfiltrate data.
**Investigative actions**
Check whether the process was injected or otherwise subverted for malicious use.
---
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