on the desktop
iptables --table filter --list | grep mdns
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns ctstate NEW
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns ctstate NEW
on the laptop:iptables --table filter --list | grep mdns
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns ctstate NEW
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns ctstate NEW
[root@Fujiantonio antonio]# iptables --table filter --list | grep mdns
ACCEPT udp -- anywhere 224.0.0.251 udp dpt:mdns ctstate NEW
2015-10-28 18:07 GMT+01:00 Antonio M <antonio.montagnani@xxxxxxxxx>:
tbx to all... iptables -L -n -vsee attached file--2015-10-28 18:00 GMT+01:00 Gordon Messmer <gordon.messmer@xxxxxxxxx>:On 10/28/2015 09:24 AM, Rick Stevens wrote:
You have a DNS resolution issue.
It's probably an mDNS issue, and replies should normally be allowed by the default "accept RELATED,ESTABLISHED" rule.
It might be helpful to see the output of "iptables -L -n -v".
With the firewall enabled, as root,
try:
# iptables -L -n | grep :53
and make sure you see lines like:
ACCEPT udp -- 0.0.0.0/0 0.0.0.0/0 udp dpt:53
ACCEPT tcp -- 0.0.0.0/0 0.0.0.0/0 tcp dpt:53
You'll normally only see those lines when you're running virtualization, or a DNS server. They aren't necessary for mDNS, which uses a different port entirely.
I suspect that you see them because you're running libvirt. If you use "iptables -v", you would see that those rules only affect packets on the virbr0 interface. They're not related to your non-virtualized applications (or to mDNS in any case).
Also make sure avahi-daemon and dnsmasq are running.
If mDNS is working when the firewall is down, we can assume that avahi-daemon is running. dnsmasq is not required for mDNS.
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Antonio Montagnani
Skype : amontag52
Linux Fedora 22 (Twenty-two)
inviato da Gmail
--
Antonio Montagnani
Skype : amontag52
Linux Fedora 22 (Twenty-two)
inviato da Gmail
Skype : amontag52
Linux Fedora 22 (Twenty-two)
inviato da Gmail
-- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
