| 1 |
On Friday 30 Sep 2016 04:17:29 Grant wrote: |
| 2 |
> >>I was watching cbm on one of my machines and it showed a lot more |
| 3 |
> >>traffic going in and out over lo than over both of the two real |
| 4 |
> >>interfaces. Is that normal? One of those two real interfaces is |
| 5 |
> >>completely unused and shows zeros in cbm all the time. |
| 6 |
> >> |
| 7 |
> >>- Grant |
| 8 |
> >> |
| 9 |
> > Yes, I would consider this normal. |
| 10 |
> > |
| 11 |
> > What is running on that machine? |
| 12 |
> > |
| 13 |
> > 'lo' is used for all traffic between localhost and localhost. |
| 14 |
> > |
| 15 |
> > IOW, all internal communications, like apache talking to the database if |
| 16 |
> > both running on the same host. Or postfix to amavis to postfix before |
| 17 |
> > mail gets delivered. |
| 18 |
> |
| 19 |
> I had no idea. Thank you Joost. |
| 20 |
> |
| 21 |
> - Grant |
| 22 |
|
| 23 |
Some services will listen to localhost network sockets, others may listen to |
| 24 |
unix sockets by default. Some services can be configured to use either. |
| 25 |
netstat, lsof, ss, will show you both. |
| 26 |
-- |
| 27 |
Regards, |
| 28 |
Mick |
Archives