> So my questions are: > • Is tcpdump BEFORE the firewall? For incoming packets tcpdump is before the firewall, for outgoing packets tcpdump is after the firewall, ie. -- wire -> NIC -> tcpdump -> netfilter/firewall
netfilter/firewall -> tcpdump -> NIC -> wire -- so tcpdump does not see outbound packets blocked by the firewall. > • What tests should I do next? Have you ever tried ... -- service asterisk stop sleep 90 service asterisk init -- Lonnie > On Jul 3, 2018, at 10:19 PM, Michael Knill > <michael.kn...@ipcsolutions.com.au> wrote: > > Back to the ongoing saga of SIP Options ping not working. This one is a bit > different though. Here is the scenario: > > • Can SSH into box fine and network connectivity is fine > • Find IP Address based SIP Trunk is UNREACHABLE. Can ping provider > from the box > • Asterisk SIP Debug shows SIP Options sent but none received. This is > also the case using tcpdump on the ppp0 interface > • Asterisk reload and Firewall restart did not fix the problem. The > system needed a full reboot for the trunk to be REACHABLE > > So my questions are: > • Is tcpdump BEFORE the firewall? > • Can you think of what the issue could be? > • What tests should I do next? > > Unfortunately (or fortunately) this happens very infrequently so the fix will > be a long confirmation period. > > Thanks all! > > Regards > Michael Knill > ------------------------------------------------------------------------------ > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! > http://sdm.link/slashdot_______________________________________________ > Astlinux-users mailing list > Astlinux-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/astlinux-users > > Donations to support AstLinux are graciously accepted via PayPal to > pay...@krisk.org. ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Astlinux-users mailing list Astlinux-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/astlinux-users Donations to support AstLinux are graciously accepted via PayPal to pay...@krisk.org.
