ProxySG is receiving SYN packets but not replying

book

Article ID: 169971

calendar_today

Updated On:

Products

ProxySG Software - SGOS

Issue/Introduction

Forward Proxy Deployment
PCAP from the Proxy reveals the ProxySG is receiving the client traffic but is not replying to the SYN

Resolution

PCAP > Packet capture

  1. Confirm the Service is enabled to listen for the traffic on the required port.
  2. Confirm the traffic is coming to the correct interface
  3. Confirm reject-inbound is disabled: https://support.symantec.com/en_US/article.TECH241714.html
  4. Ensure client has not triggered attack detection: https://support.symantec.com/en_US/article.TECH241365.html