Firewall Rules and MetaTrader 4 Connection Delays

Summary

This short troubleshooting note examines how security software may affect MetaTrader 4 connections to a trading server. It reports tests of Outpost Firewall and Kaspersky Antivirus: the tested Outpost configuration increased connection time, while Kaspersky did not measurably change it. The author attributes the delay to the firewall inspecting encrypted traffic sent over a port commonly used for HTTPS, though the excerpt does not document the test setup in enough detail to generalize that explanation.

The suggested remedy is to add the terminal to the firewall’s trusted applications and permit its outgoing TCP connections without component-level inspection. The article argues this restored connection speed in its tests. This is operational guidance rather than a trading strategy or broad benchmark: the findings concern particular software and configurations, and the article gives no sample size, latency distribution, or independent replication. Traders should treat the result as a diagnostic lead for similar connection delays, not as evidence that every firewall or antivirus product will slow trading.

Key ideas

• The article reports that one tested firewall configuration added delay to MetaTrader 4 server connections.
• The tested antivirus configuration did not change connection time in the author’s comparison.
• The proposed troubleshooting step is to trust the terminal and allow its outgoing TCP traffic.
• The reported result applies to the specific products and settings tested, with limited detail for generalization.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.