Samba on Linux with defaults is also vulnerable to SMBLoris because smbd forks for each client. Fix: "max smb processes = 1000" in smb.conf.pic.twitter.com/vA9XW16j8S
For the record, my math was 18B Eth + 20B IP + 20B TCP = 58B, ×2 packets (SYN+ACK), +4 payload = 120 bytes/connection TX. RX would be ~½.
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Also note that the Samba issue isn't due to the header, it's just general process memory overhead. You can exploit it w/o sending data.
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Actually since you get an extra ACK for RX (though you can ignore it), RX would be about the same as TX in practice.
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It's been updated to note both of your suggestions. Thanks for taking a look into this bug on Samba.
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Thanks for the update!
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