> 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/iptables-configuration-command-was-executed.md).
# Iptables configuration command was executed
### Synopsis
| Field | Value |
| -------------------- | -------------------------------------------------------------- |
| Activation Period | 14 Days |
| Training Period | 30 Days |
| Test Period | N/A (single event) |
| Deduplication Period | 1 Day |
| Required Data | XDR Agent |
| ATT\&CK Tactic | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses: Disable or Modify System Firewall (T1562.004) |
| Severity | Informational |
### Description
The iptables process was executed with a command to add or delete rules on the host.
### Attacker's Goals
Adding or deleting system firewalls rules to avoid possible detection.
### Investigative actions
* Verify that this isn't IT activity.
* Look for other hosts executing similar commands.
### Variations
Rare iptables port forward command was executed
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------- |
| ATT\&CK Tactic | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses: Disable or Modify System Firewall (T1562.004) |
| Severity | Low |
**Description**
An iptables command was executed to perform port forward, This command is unpopular.
**Attacker's Goals**
Adding or deleting system firewalls rules to avoid possible detection.
**Investigative actions**
* Verify that this isn't IT activity.
* Look for other hosts executing similar commands.
Uncommon iptables port forward command was executed on the host
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------- |
| ATT\&CK Tactic | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses: Disable or Modify System Firewall (T1562.004) |
| Severity | Informational |
**Description**
An iptables command was executed to perform port forward, This command is uncommon for the host.
**Attacker's Goals**
Adding or deleting system firewalls rules to avoid possible detection.
**Investigative actions**
* Verify that this isn't IT activity.
* Look for other hosts executing similar commands.
Rare iptables delete command was executed
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------- |
| ATT\&CK Tactic | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses: Disable or Modify System Firewall (T1562.004) |
| Severity | Low |
**Description**
An iptables command was executed to delete rule, This command is unpopular.
**Attacker's Goals**
Adding or deleting system firewalls rules to avoid possible detection.
**Investigative actions**
* Verify that this isn't IT activity.
* Look for other hosts executing similar commands.
A rare iptables delete command was executed on the host
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------- |
| ATT\&CK Tactic | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses: Disable or Modify System Firewall (T1562.004) |
| Severity | Informational |
**Description**
An iptables command was executed to delete rule, This command is uncommon for the host.
**Attacker's Goals**
Adding or deleting system firewalls rules to avoid possible detection.
**Investigative actions**
* Verify that this isn't IT activity.
* Look for other hosts executing similar commands.
A rare iptables flush all command was executed
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------- |
| ATT\&CK Tactic | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses: Disable or Modify System Firewall (T1562.004) |
| Severity | Low |
**Description**
An iptables command was executed to flush all rules, This command is unpopular.
**Attacker's Goals**
Adding or deleting system firewalls rules to avoid possible detection.
**Investigative actions**
* Verify that this isn't IT activity.
* Look for other hosts executing similar commands.
A rare iptables flush command was executed
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------- |
| ATT\&CK Tactic | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses: Disable or Modify System Firewall (T1562.004) |
| Severity | Low |
**Description**
An iptables command was executed to flush all rules, This command is unpopular.
**Attacker's Goals**
Adding or deleting system firewalls rules to avoid possible detection.
**Investigative actions**
* Verify that this isn't IT activity.
* Look for other hosts executing similar commands.
A rare iptables flush command was executed on the host
**Synopsis**
| Field | Value |
| ----------------- | -------------------------------------------------------------- |
| ATT\&CK Tactic | Defense Evasion (TA0005) |
| ATT\&CK Technique | Impair Defenses: Disable or Modify System Firewall (T1562.004) |
| Severity | Informational |
**Description**
An iptables command was executed to flush rules, This command is uncommon for the host.
**Attacker's Goals**
Adding or deleting system firewalls rules to avoid possible detection.
**Investigative actions**
* Verify that this isn't IT activity.
* Look for other hosts executing similar commands.
---
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