Lao Sen Chang Tan IT Help

Previously wrote "Sonicwall FortiGate firewall to establish Site to Site VPN"Article，At that time often encounter keep FortiGate devices do Site to Site VPN，And my hand is Sonicwall，The results are sometimes successful implementation sometimes fails，Later, there are times altogether spent some time，The two brands are set to be a way to organize，To facilitate subsequent reference。At that time testing and finishing News，Have found a slightly different FortiGate firmware，Quite the same way will be set，To trouble，Later, he gave the two methods can be successfully established connection”Tunnel”Give”Interface”Are recorded，So that the next encounter revision，You can try different methods。
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Yesterday a User installation FortiClient，Finally, always present and can not be installed successfully rolling back，His environment is Windows 10，The first installation is OK，But also because anti-virus mistakenly loaded into，So the whole removed again，Began to appear in the final stages of rolling back the installation after the second，Tried to manually remove the virtual network adapter are now part of the machine code Wufajiejue，Finally, the use of advanced restart finally get。
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Once when in-house test，Sonicwall found for the same segment, but not tied to the external IP firewall，Will be considered fake IP and block off，Sometimes finding solutions，It did not go ignored。Recently a colleague reaction，A customer does not come in the mail to send，I do not have any connection to check SPAM record，While the other check log to determine our gear，Let us set up and provide IP whitelist，The IP're just looking at each other with our one yards，It reminds me of that year found problems Sonicwall，After transfer to a firewall record，She saw”ip spoof dropped”Messages。

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The reaction colleagues previously outpoint，Line on the phone can send messages correctly，But can not send pictures，Also the use of a network that is normally。Research for a while，Thought it would not be a problem MTU，Sonet network is just the problem of mining pppoe dial-up，Internet search will recommend value，General advice is 1492 or 1484，The default value is 1500 Sonicwall firewall，After adjustment，Line normal to send pictures。
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Recently VPN abnormal occurrence points outside the company，After the manufacturer to assist the inquiry，Was due to a specific point outside the bandwidth occupied by user caused by。At the moment the problem occurred，In fact, manufacturers have seen through MRTG statements are traffic issues，But did not clarify further what is causing traffic anomaly reason，They are not thinking about what their own way can be a simple traffic monitoring，When the problem is to occur，You can find out what is causing IP，Even able to detect the use of the service why。
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In a recent assessment Sonicwall firewall and IPS subscription service ATP，But the budget can only choose one in two，A first started asking manufacturers recommendations，Because Taiwan can not subscribe to the manufacturer's instructions Capture ATP alone，He therefore suggested IPS subscription service。
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===Memo===

【Console設定】

Baud rate: 9600
1 stop bit
No parity
No flow control
8 Bits

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　　三年前曾試過為Sonicwall NSA 2400與FortiGate 110C建立Site to Site VPN，不過失敗了，Later tests Juniper 5GT and Sonicwall actually succeed。Recently, with a demand to build VPN FortiGate 110C，雖然手上已經有另一台FortiGate 110C，照理說直接用同型號來建會省事很多，但我還是想再試一次用Sonicwall來建，看看能不能找出當初失敗的原因，來回測試一整天，Finally get。

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[Links]

• HP 1920 ARP table size ? – Hewlett Packard Enterprise Community
• HP 5500 EI & 5500 SI Switch Series Layer 3 – IP Services Command Reference
• HP 5120 SI Switch Series Layer 3 – IP Services Command Reference
• HP 5120 EI Switch Series Layer 3 – IP Services Configuration Guide
• EdgeSwitch Administration Guide – EdgeSwitch_AdminGuide.pdf

===Memo===

【Console設定】

• Baud rate: 38400
• 1 stop bit
• No parity
• No flow control
• 8 Bits

Continue browsing »