---
title: 'Firewall Troubleshooting'
url: 'https://docs.danami.com/juggernaut/troubleshooting/firewall'
markdown: 'https://docs.danami.com/juggernaut/troubleshooting/firewall.md'
date: '2026-09-22'
description: 'CSF firewall scripts have a full command line interface that can be useful for troubleshooting purposes: csf --help -h --help Display all the CSF command line options -x, --disable Disable csf and lfd completely -e, --enable Enable csf and lfd if previously disabled -l, --status List/…'
taxonomy:
  category:
    - docs
---

[](#)  [ Basics ](https://docs.danami.com/juggernaut/)     [ Troubleshooting ](https://docs.danami.com/juggernaut/troubleshooting)      Firewall Troubleshooting    

# Firewall Troubleshooting

CSF firewall scripts have a full command line interface that can be useful for troubleshooting purposes:

```
csf --help
-h   --help     Display all the CSF command line options
-x,  --disable  Disable csf and lfd completely
-e,  --enable   Enable csf and lfd if previously disabled
-l,  --status   List/Show the IPv4 iptables configuration
-s,  --start    Start the firewall rules
-f,  --stop     Flush/Stop firewall rules (Note: lfd may restart csf)
-r,  --restart  Restart firewall rules
```

## Disable CSF and LFD completely

```
csf --disable
```

## Enable CSF and LFD if previously disabled

```
csf --enable
```

## Start the firewall rules

```
csf --start
```

## Flush/Stop firewall rules

```
csf --stop
```

## Restart firewall rules

```
csf --restart
```

## List/Show the IPv4 iptables configuration

```
csf --status
```

## List/Show the IPv6 ip6tables configuration

```
csf --status6
```

## Ping all members of the LFD cluster (for testing cluster setup)

```
csf --cping
```

 [ ](https://docs.danami.com/juggernaut/troubleshooting/installation) [](https://docs.danami.com/juggernaut/troubleshooting/ftp-connection-problems)

---

## Navigation

- Parent: [Troubleshooting](https://docs.danami.com/juggernaut/troubleshooting.md)
- Previous: [Installation](https://docs.danami.com/juggernaut/troubleshooting/installation.md)
- Next: [FTP connection problems](https://docs.danami.com/juggernaut/troubleshooting/ftp-connection-problems.md)