[ale] Can't ping localhost

[Raj Wurttemberg]

net.ipv4.icmp_echo_ignore_all = 1 in sysctl.conf maybe?

/Raj

-----Original Message-----
From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of
DJ-Pfulio
Sent: Saturday, July 1, 2017 11:17 AM
To: 'Atlanta Linux Enthusiasts' <ale at ale.org>
Subject: Re: [ale] Can't ping localhost



Nope.  I dumped all the FW rules and grep'd for '127.0' - nothing.
Also, nothing in any system logs, FW logs or dmesg.

I do see lots of multi-cast broadcasts being blocked - 224.0.0.1.

SMTP is listening on port 25/tcp.
$ netstat -an | grep 127.0.0.1
tcp        0      0 127.0.0.1:25      0.0.0.0:*               LISTEN
udp        0      0 127.0.0.1:123     0.0.0.0:*

This is expected.


More ideas?

On 07/01/2017 11:01 AM, Raj Wurttemberg wrote:
> Local firewall blocking icmp traffic?  I ask because some data is 
> traversing
> lo:
> 
>           RX packets:** 41 ** errors:0 dropped:0 overruns:0 frame:0
>           TX packets:** 41 ** errors:0 dropped:0 overruns:0 carrier:0
> 
> /Raj
> 
> -----Original Message-----
> From: ale-bounces at ale.org [mailto:ale-bounces at ale.org] On Behalf Of 
> DJ-Pfulio
> Sent: Saturday, July 1, 2017 10:24 AM
> To: Atlanta Linux Enthusiasts <ale at ale.org>
> Subject: [ale] Can't ping localhost
> 
> $ ping localhost
> PING localhost (127.0.0.1) 56(84) bytes of data.
> ^C
> --- localhost ping statistics ---
> 6 packets transmitted, 0 received, 100% packet loss, time 5040ms
> 
> Huh? 6 dropped packets.
> 
> $ ifconfig lo
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:65536  Metric:1
>           RX packets:41 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:41 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1
>           RX bytes:3444 (3.4 KB)  TX bytes:3444 (3.4 KB)
> 


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