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How to set TCP MSS value in a specific interface from security gateway of Quantum 1600 appliance with running OS version R80.20.35 .Current environment there is no Security Management Server so I cannot edit it from GuiDBEdit.
Look here: sk108199: Internal host cannot surf the Internet when MTU of the WAN port is less than 1400
More reading: sk61221: Issues requiring adjustment of the Maximum Segment Size (MSS) of TCP SYN and TCP SYN-ACK pa...
When I trying to enable TCP MSS getting the following error
#fw ctl set int fw_clamp_tcp_mss
Set operation failed: failed to get parameter fw_clamp_tcp_mss
fw ctl set int fw_clamp_tcp_mss 1
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