hai teams,

shafeek

my sonicwall tz350 sit to site tunnel created in with sophos xg firewall

sonicwall site have dynamic wan ip

sophos have static ip

but the problem is every 2 or 3 days tunnel goes down ,i have to manually login sonicwall and disable and enavle the vpn its goes up , it will work may be 2 or 3 days after its same happening

tunnel is created ikv2 mode

site to site

MustafaA

@shafeek , with limited available insight, I can suggest to make sure the Keep Alive option is enabled as well as the Dead Peer Detection.