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  • About HiroNg
HiroNg

HiroNg

Conversationalist

Member since Sep 17, 2019

‎03-26-2020
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BrechtSchamp
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First 5 Posts
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Latest Contributions by HiroNg
  • Topics HiroNg has Participated In
  • Latest Contributions by HiroNg

bad DNS - Switch and AP

by HiroNg in Switching
‎02-10-2020 07:28 PM
‎02-10-2020 07:28 PM
I have a branch have Meraki MX, Switch, AP.    Problem: Meraki MX DNS is working fine (Green) , but Switch and AP are showing bad DNS. so they are in alerting.  This cause user cannot connect to network.  Once i restart MX, everything is back to normal. they are back in green.  Note: Switch and AP management IP is vlan 1, vlan 1 is configured to use upstream dns.  MX firewall WAN 1 DNS is configured based on local telco.    Can it be local telco DNS issue? but how to explain when i restarted the MX, everything is back to green again?    Any idea?    Thank you.      ... View more

Re: Happy New Year! What are your Networking Resolutions?

by HiroNg in Community Announcements
‎01-08-2020 05:48 PM
‎01-08-2020 05:48 PM
learn python and use it in Meraki,  ... View more

Re: Meraki MX DNS

by HiroNg in Security / SD-WAN
‎11-07-2019 10:57 PM
‎11-07-2019 10:57 PM
Hi,    I have defined something else in the DHCP for the vlan i created.  That is our internal DNS server, so i expect the client will query offce365 dns through our internal DNS instead of MX DNS.    i just curious why the MX DNS problem will affect client connection to office365.    Thank you.    ... View more

Meraki MX DNS

by HiroNg in Security / SD-WAN
‎11-06-2019 10:40 PM
‎11-06-2019 10:40 PM
I curious how DNS work in Meraki.    When configure Uplink in Meraki MX, i have configured dns provided by local telco.  The MX is having vpn to our central office.  I have configured internal DNS in user DHCP subnet.    Question is here, how come telco DNS problem can cause user experience outlook office365 disconnected?    Thank you.    ... View more

Re: MX firewall rules

by HiroNg in Security / SD-WAN
‎09-18-2019 07:24 PM
‎09-18-2019 07:24 PM
Hi Nash,    Got it. It should solve my issue now.    Thank you.    ... View more

Re: MX firewall rules

by HiroNg in Security / SD-WAN
‎09-18-2019 06:39 PM
‎09-18-2019 06:39 PM
I added, it is working. remote site cannot access to local management subnet now, only certain authorize hub subnet can access management subnet.    I thinking, i have added the rules in Security & SD-WAN --> Firewall, why it didn't function as it is. So the firewall rules doesn't function for site-to-site VPN?    Thank you.    Regards, Collin Ng       ... View more

Re: MX firewall rules

by HiroNg in Security / SD-WAN
‎09-18-2019 04:13 PM
‎09-18-2019 04:13 PM
Hi Nash,   i read the URL you sent, it did mentioned     (This rule will never be applied as the source subnet is not a LAN subnet on the MX:)   if i put deny tcp 10.0.0.0/8 as source and local management as destination, it will not work right?   Thank you. ... View more

Re: MX firewall rules

by HiroNg in Security / SD-WAN
‎09-18-2019 07:39 AM
‎09-18-2019 07:39 AM
  I have these 2 rules under Security & SD-WAN under firewall already, but it didn't take effect.  My target is to allow several HUB subnet to manage the local management subnet, and deny tcp 10.0.0.0/8 to access this local management. So other remote sites cannot access into the management subnet server.    I have another rules under firewall to block local LAN subnet to access local management, it work perfectly in Security & SD-WAN under firewall.    Thank you.        ... View more

Re: MX firewall rules

by HiroNg in Security / SD-WAN
‎09-18-2019 07:29 AM
‎09-18-2019 07:29 AM
Hi Nash,    These are server and non-meraki switch management subnet and it did participate in VPN.  My target is to allow several HUB subnet to manage the local management server, and deny tcp 10.0.0.0/8 to access this management. So other remote sites cannot access into the management subnet.    I saw there are site-to-site outbound firewall and site-to-site inbound firewall.    How should i do in this situation?    Thank you.      ... View more

Re: MX firewall rules

by HiroNg in Security / SD-WAN
‎09-18-2019 06:55 AM
‎09-18-2019 06:55 AM
Hi Nash,    Yes, I have Site to Site VPN setup to a number of remote sites.    The firewall rules setup are under Security & SDWAN-Firewall there to deny tcp 10.0.0.0/8 to my current site management vlan.    However my remote sites still allow to RDP and web to current site management vlan.    Thank you.    ... View more

MX firewall rules

by HiroNg in Security / SD-WAN
‎09-18-2019 12:03 AM
‎09-18-2019 12:03 AM
I have a firewall rule configuring on top to deny tcp from any 10.0.0.0/8 to management vlan. however, a remote site with 10.x.x.x still able to open the management server via https.    Can this be bug?    Thank you.  ... View more
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