How to setup a router to respond to ping

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sassriverrat
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PostPosted: Sun Jan 19, 2020 0:34    Post subject: Reply with quote
@kernal-panic69

dd-wrt AP has been working flawlessly as an AP for two years. It's running as an "AP" (there isn't a Router mode available in wireless mode), DHCP server is disabled, and the firewall is off. So not the issue in that regard.

@Wildlion
Ok- So if I ping from my laptop on a cmd prompt, I can trace the traffic on ICMP. If I ping from the switch, I have to trace the ping using ICMPv6....

I'll keep playing
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kernel-panic69
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PostPosted: Sun Jan 19, 2020 0:47    Post subject: Reply with quote
I don't see how you set it up as a WAP-only in the same subnet without switching it from gateway mode to router mode:

https://wiki.dd-wrt.com/wiki/index.php/Wireless_access_point

It should respond to ping just fine with it configured as a simple WAP with the firewall disabled, unless something is askew.

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sassriverrat
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PostPosted: Sun Jan 19, 2020 1:31    Post subject: Reply with quote
@kernel-panic69

Yes, it's running as a "router" in that regard. I'd be happy to send the config to you if you'd like. It responds to pings from my laptop and one of my managed switches, but it doesn't respond to pings from the Ubiquiti Network Management System (Cloud interface).
sassriverrat
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PostPosted: Sun Jan 19, 2020 1:55    Post subject: Reply with quote
@WildLion
sassriverrat
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PostPosted: Sun Jan 19, 2020 2:09    Post subject: Reply with quote
@WildLion

Caught it. Here ya go. 10.0.0.3 is one of them (the other is 10.0.0.4)
sassriverrat
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PostPosted: Sun Jan 19, 2020 2:28    Post subject: Reply with quote
Ugh this attachment....
sassriverrat
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PostPosted: Sun Jan 19, 2020 2:35    Post subject: Reply with quote
Ugh this attachment....
sassriverrat
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PostPosted: Sun Jan 19, 2020 2:39    Post subject: Reply with quote
Ugh this attachment....

Since it won't upload- here's what came though-
incoming Ubiquiti -> "BroadCast" -> ARP -> 60 Who has 10.0.0.3? Tell 10.0.0.8

10.0.0.8 is my EdgeSwitch
kernel-panic69
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PostPosted: Sun Jan 19, 2020 2:54    Post subject: Reply with quote
Why would your dd-wrt router be responding to something related to Ubiquiti, again? I guess I am not connecting the dots.
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sassriverrat
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PostPosted: Sun Jan 19, 2020 3:41    Post subject: Reply with quote
The ubiquiti cloud management service (UNMS) allows for cloud management of enterprise-level systems- I can have sites, numerous LANs, etc etc.

Anyway, the service says that the dd-wrt routers on my network are offline (using a "ping" service). Well the routers are not offline...so we've been trying to figure out why they won't reply to the ping from UNMS.

I'll try this attachment again



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kernel-panic69
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PostPosted: Sun Jan 19, 2020 12:05    Post subject: Reply with quote
Ok, why are you trying to use UNMS with non-Ubiquiti equipment... sounds like you are over-complicating things. Not to mention, the Ubiquiti network controller now interfaces with UNMS-capable equipment, and you don't need to use UNMS.
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sassriverrat
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PostPosted: Sun Jan 19, 2020 14:30    Post subject: Reply with quote
Because most of my APs are not ubiquiti and the ability to manage it anywhere I have internet is pretty crucial- people rely on my keeping the network running and a network down is a bit of a problem.
kernel-panic69
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PostPosted: Sun Jan 19, 2020 18:41    Post subject: Reply with quote
UNMS doesn't talk to DD-WRT to 'manage' it, nor does the Ubiquiti Network controller, per se, but I understand the situation. I don't see why it's not responding to pings in router mode, unless that is part of the default firewall that doesn't turn off. What was your output of iptables -vnL on the router/AP in question?
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sassriverrat
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PostPosted: Sun Jan 19, 2020 18:59    Post subject: Reply with quote
here ya go (iptables -vnL)

root@Shop:~# iptables -vnL
Chain INPUT (policy ACCEPT 91475 packets, 18M bytes)
pkts bytes target prot opt in out source destination

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination

Chain OUTPUT (policy ACCEPT 2670 packets, 684K bytes)
pkts bytes target prot opt in out source destination

Chain advgrp_1 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_10 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_2 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_3 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_4 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_5 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_6 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_7 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_8 (0 references)
pkts bytes target prot opt in out source destination

Chain advgrp_9 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_1 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_10 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_2 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_3 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_4 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_5 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_6 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_7 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_8 (0 references)
pkts bytes target prot opt in out source destination

Chain grp_9 (0 references)
pkts bytes target prot opt in out source destination

Chain lan2wan (0 references)
pkts bytes target prot opt in out source destination

Chain logaccept (0 references)
pkts bytes target prot opt in out source destination
0 0 ACCEPT 0 -- * * 0.0.0.0/0 0.0.0.0/0

Chain logbrute (0 references)
pkts bytes target prot opt in out source destination
0 0 0 -- * * 0.0.0.0/0 0.0.0.0/0 recent: SET name: BRUTEFORCE side: source
0 0 RETURN 0 -- * * 0.0.0.0/0 0.0.0.0/0 !recent: UPDATE seconds: 60 hit_count: 4 name: BRUTEFORCE side: source
0 0 RETURN 0 -- * * 0.0.0.0/0 0.0.0.0/0 limit: avg 1/min burst 1
0 0 DROP 0 -- * * 0.0.0.0/0 0.0.0.0/0

Chain logdrop (0 references)
pkts bytes target prot opt in out source destination
0 0 DROP 0 -- * * 0.0.0.0/0 0.0.0.0/0

Chain logreject (0 references)
pkts bytes target prot opt in out source destination
0 0 REJECT tcp -- * * 0.0.0.0/0 0.0.0.0/0 reject-with tcp-reset

Chain trigger_out (0 references)
pkts bytes target prot opt in out source destination
kernel-panic69
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PostPosted: Sun Jan 19, 2020 20:17    Post subject: Reply with quote
Ok, just for sake of ruling out anything, when you disabled the firewall, did you un-check ALL the default options (except for filter multicast, if I am not mistaken)? If I recall right, if you leave anything checked when you disable the firewall, it may cause issues. I don't see anything there that will not allow it to respond, but I would rule out some weird voodoo as suggested to see if that affects it.
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