Inspect whether packet forwarding is enabled.

Section: Netfilter and Policy Debugging

Check IP forwarding

bash
bash
sysctl net.ipv4.ip_forward
Explanation

Inspect whether packet forwarding is enabled.

Learn the surrounding workflow

Compare similar commands or jump into common fixes when this command is part of a bigger troubleshooting path.

Related commands

Same sheet · prioritizing Netfilter and Policy Debugging
Enable IP forwarding
Turn on IPv4 forwarding immediately.
OpenIn sheetbashsame section
Show tracked connections
Inspect conntrack table entries.
OpenIn sheetbashsame section
Delete a tracked flow
Remove conntrack state for a given flow.
OpenIn sheetbashsame section
Reset iptables counters
Zero rule counters before testing packet paths.
OpenIn sheetbashsame section
Trace nftables packet path
Monitor nftables trace events for debugging.
OpenIn sheetbashsame section
Show nftables rules
Display the active nftables ruleset.