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Hi Doc D,
Thank you for reaching out to Sophos Community.
Are there any restriction policies(web/app/ips/qos) applied on LAN to VPN firewall rule at SiteB?
Do you have DoS enabled on the firewall?
At the time of file transfer, check the total utilization(Rx & Tx packets) for IPSec using the below command.
Login to SSH > 5. Device Management > 3. Advanced Shell
# iftop -i ipsec0
Also, check the utilization of WAN interface at that time.
Hi Doc D,
Thank you for reaching out to Sophos Community.
Are there any restriction policies(web/app/ips/qos) applied on LAN to VPN firewall rule at SiteB?
Do you have DoS enabled on the firewall?
At the time of file transfer, check the total utilization(Rx & Tx packets) for IPSec using the below command.
Login to SSH > 5. Device Management > 3. Advanced Shell
# iftop -i ipsec0
Also, check the utilization of WAN interface at that time.