TKWITS Community Legend ✭✭✭✭✭
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Mike, Also, don't forget that a single syslog message may be broken up into multiple individual packets. So 1 log message may actually be broken up into 8 packets because of MTU / Windows Sizing / Etc.
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Sonicwalls are NOT consumer-grade devices. Business/enterprise devices commonly require licensing to access features. It helps to do your own research.
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You can ask your contact to add the additional subnet....
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@Ajishlal Thank you for clarification that it is. I simply looked at the article you originally linked, which DID NOT contain any information that it was deprecated.
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Sorry, im not going to go through 35000 lines of a tech support report when you can describe the VPN tunnel config to us.
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What else is in the topology of this network (switch, hub, anything)? Did anything else change besides the firewall? Are you using other interfaces / sub-interfaces / subnets on the Sonicwall? Do you have a copy of the config of the Cisco to compare? The fact that you can still ping them but cannot telnet to them is…
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Does Citrix work if you remove the Global VPN client? You haven't provided us any information on what you've done to troubleshoot...
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A quick description of IP subnets used on each end of the VPN tunnel is a good start. Sanitize any confidential information of course. Have you reviewed the information here: https://www.sonicwall.com/support/knowledge-base/how-can-i-configure-nat-over-vpn-in-a-site-to-site-vpn/170515155805172/
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See my comment here:
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You will need to enable AppFlow collection which requires a valid license. See the articles below.
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Have you reviewed this article at all? Who ever controls Site 1 will need to add Site 3's subnet to the VPN tunnel it has to Site 2, then you can add the Site 1 subnet to the Site 2 to Site 3 tunnel.
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Please provide more details about your config including VPN tunnel information.
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@Ajishlal Nowhere in that article does it say WAN DDOS Protection (Non-TCP Floods) is deprecated...
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You havent provided us much information like what NAT and firewall rules already exist, what fail-over method you use, etc...
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@Chojin Each Protection category would get 1/3 of the total e.g. Layer 3 SYN Flood Protection : Attack Threshold: 166000 Layer 2 SYN/RST/FIN/TCP Flood Protection: Threshold: 166000 WAN DDOS Protection: Threshold: 166000 Don't forget to toggle to IPv6 for these settings if you are using it.