# Can not ping from modem to acs

**URL:** <https://forum.genieacs.com/t/can-not-ping-from-modem-to-acs/1768>\
**Category:** Uncategorized\
**Created:** [June 7, 2021, 6:44am UTC](https://forum.genieacs.com/t/can-not-ping-from-modem-to-acs/1768 "2021-06-07T06:44:59Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![fayerex1](https://avatars.discourse-cdn.com/v4/letter/f/a9adbd/32.png) [@fayerex1](https://forum.genieacs.com/u/fayerex1)\
**Post date:** [June 7, 2021, 6:44am UTC](https://forum.genieacs.com/t/can-not-ping-from-modem-to-acs/1768/1 "2021-06-07T06:44:59Z")

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hello

I can’t ping from my modem to my acs, when i try to ping it from the acs side,i can get a ping. When it sends a request back to the acs it gets lost. And when im connected to the modem i can not ping nothing in my network.  
On the modem there’s no NAT or firewall active

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**Author:** ![fdavidcn](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/fdavidcn/32/594_2.png) [@fdavidcn](https://forum.genieacs.com/u/fdavidcn)\
**Post date:** [June 8, 2021, 4:02pm UTC](https://forum.genieacs.com/t/can-not-ping-from-modem-to-acs/1768/2 "2021-06-08T16:02:06Z")

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Hi fayerex1,

Have you checked your ACS firewall? Maybe you have enabled firewall like ‘iptables’ with some rules blocking ICMP

If you haven’t any firewall in your ACS, check your network devices config between ACS and you modem.

Regards.

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**Author:** ![fayerex1](https://avatars.discourse-cdn.com/v4/letter/f/a9adbd/32.png) [@fayerex1](https://forum.genieacs.com/u/fayerex1)\
**Post date:** [June 9, 2021, 6:24am UTC](https://forum.genieacs.com/t/can-not-ping-from-modem-to-acs/1768/3 "2021-06-09T06:24:21Z")

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Hi

thanks i did look and i have no firewall active rn on the ACS,  
I have my modems 2 on WANS they work fine and i have 2 on DSL, and this to dont work.  
They get the request, but when they give a replay it gets lost and when i connect to modem via Putty i can’t ping nothing

Regards.

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**Author:** ![fdavidcn](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.genieacs.com/fdavidcn/32/594_2.png) [@fdavidcn](https://forum.genieacs.com/u/fdavidcn)\
**Post date:** [June 9, 2021, 10:29am UTC](https://forum.genieacs.com/t/can-not-ping-from-modem-to-acs/1768/4 "2021-06-09T10:29:14Z")

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In this case check routing config and services binding inside your modem. Some devices uses one WAN interface for internet and another for TR069.

Probably the default route in your modem will be “internet” wan interface and your TR069 packets are not routed correctly.

Regards.