Columbia Gulf Transmission Notice 25934723

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TSP Name

Columbia Gulf Transmission, LLC

TSP

007854581

Date

Time

Notice ID

25934723

Notice Type Description: Computer System Status
Notice Stat Desc: Initiate
Prior Notice:
Critical: Y
Reqrd Rsp Desc: No Response Required

Post
Notice Effective
Notice End

Response

04/17/25
04/17/25
04/24/25



9:52:39 AM
12:00:00 AM
12:00:00 AM



Subject: TC eConnects – Update - Firewall Change implemented April 16, 2025

Author: Madhu Singh

Notice Text

TC eConnects – Update - Firewall Change implemented April 16, 2025To enhance the reliability and security of our systems, TC eConnects implemented a firewall change the evening of April 16, 2025. This change requires our customers to update their firewall configurations to prevent potential access disruptions to TC eConnects.Important Guidelines:• Customers should allowlist the new IP address provided below• Maintain the existing address ranges until the change is fully completedNew Firewall IP Address: 159.60.128.255Contact Information: If you have questions, please:• Reach out to your IT Support team• Contact your Customer Service Representative• Call 1-866-581-6487We appreciate your cooperation in implementing this important security update.