Bug 134490
| Summary: | "service iptables panic" disables loopback | ||
|---|---|---|---|
| Product: | Red Hat Enterprise Linux 3 | Reporter: | Ian Laurie <nixuser> |
| Component: | iptables | Assignee: | Thomas Woerner <twoerner> |
| Status: | CLOSED NOTABUG | QA Contact: | Ben Levenson <benl> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 3.0 | Keywords: | FutureFeature |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Enhancement | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2004-10-04 11:59:27 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
Panic should and is dropping all traffic that is going through the firewall. This includes the loopback devices. Panic is an emergency option. Closing as "NOT A BUG". |
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.4.1) Gecko/20031114 Description of problem: The command "service iptables panic" disables the loopback interface because the script /etc/rc.d/init.d/iptables calls the script function "set_policy" with the argument "DROP". It might be a good idea to modify the script so "set_policy" does a check for the "DROP" policy and explicitly enables the loopback. Something along these lines: if [ "$policy" == "DROP" ]; then $IPTABLES -A INPUT -i lo -j ACCEPT $IPTABLES -A OUTPUT -o lo -j ACCEPT fi Version-Release number of selected component (if applicable): iptables-1.2.8-12.3 How reproducible: Always Steps to Reproduce: 1. Issue "service iptables panic" 2. 3. Actual Results: Firewall adopts a blanket DROP policy, breaking all flow, even the loopback. Expected Results: It may be better if the loopback were left enabled even when "panic" is used. Additional info: Very low priority enhancement request. I think all Red Hat versions have this same issue.