# Random freezes (SSH and console) occur on appliances running in UPPAK mode

**Product**: Check Point Appliances  
**Version**: R81.10 (EOS), R81.20, R82  
**Last Modified**: 2025-08-07

## Symptoms

- Running `tcpdump` on all interfaces (i.e., `tcpdump -peni any | grep <IP address>`) with SecureXL in User (UPPAK) mode while under heavy traffic load may cause the system to hang.
- There is no issue when running `tcpdump -peni any host <IP address>` or running `tcpdump` when there is no traffic.

## Solution

This problem was fixed. The fix is included in:

- [Jumbo Hotfix Accumulator for R82](https://sc1.checkpoint.com/documents/Jumbo_HFA/R82/Default.htm) starting from Take 25  
- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 111  
- [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 177

If you choose not to upgrade, as a **workaround**, use the `cpdump -peni any host <IP address>` command.

#### NOTE  
This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

## Article Properties
**Access Level**: General  
**Status**: Approved by TAC  
**Date Created**: 2025-03-10  
**Last Modified**: 2025-08-07