SG TCP/IP Analyzer
IP Address: 3.14.70.203 (ec2-3-14-70-203.us-east-2.compute.amazonaws.com)
Client OS: Search Bot
Browser: Mozilla 5.0
User Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
Please Read the Analyzer FAQ if the above
is not your IP address.
TCP options string = 020405b40402080a0b6b46c80000000001030300
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MTU = 1500
MTU is fully optimized for broadband.
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MSS = 1460
Maximum useful data in each packet = 1448, which is less than MSS because of Timestamps, or other TCP/IP options used.
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Default TCP Receive Window (RWIN) = 5840
RWIN Scaling (RFC1323) = 0 bits
Unscaled TCP Receive Window = 5840
RWIN seems to be set to a very small number. If you're on a broadband connection, consider using a larger value.
RWIN is a multiple of MSS
Other RWIN values that might work well with your current MTU/MSS:
64240 (up to 2 Mbit lines, depending on latency. MSS * 44)
128480 (1-5 Mbit lines, depending on latency. MSS * 44 * 2)
256960 (2-20 Mbit lines, depending on latency. MSS * 44 * 2^2)
513920 (20-100 Mbit lines, depending on latency. MSS * 44 * 2^3)
1027840 (80+ Mbit lines up to Gigabit connections, depending on latency. MSS * 44 * 2^4)
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bandwidth * delay product (Note this is not a speed test):
Your current TCP Window limits you to: 234 kbps (~23 KBytes/s) @ 200ms latency
Your current TCP Window limits you to: 93 kbps (~9 KBytes/s) @ 500ms latency
Consider increasing your RWIN value to optimize TCP/IP for broadband.
Note: You can expect up to ~90% of this throughput considering line overhead.
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MTU Discovery (RFC1191) = ON
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Time to live left = 47 hops
TTL value is ok.
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Timestamps (RFC1323) = ON
Note: Timestamps add 12 bytes to the TCP header of each packet, reducing the space available for useful data. |
Selective Acknowledgements (RFC2018) = ON
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IP type of service field (RFC1349) = 00000000 (0)
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Share Your Results
Below is a compact version of the results without specific recommendations, useful for sharing your current settings. Feel free
to post in our forums with any questions you may have.
Optimize Your Connection
The TCP/IP Analyzer results provide packet header information from the TCP 3-way handshake between your computer and our server.
The information above can be used to fine-tune TCP/IP settings and optimize your internet connection.
Detailed information on optimizing your network-related settings is available in our Broadband articles and TCP/IP Tweaks Articles.
We have also developed the free TCP Optimizer program to help apply the optimal settings automatically: SG TCP/IP Optimizer
Feel free to ask specific questions about your results in our forums.
92,096,346 connections tested since 2001.03.10
Analyzer version: 1.36 - last updated 2021.10.23
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