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Sonu Jaiswal avatar Server

PfSense Fedora L2TP VPN stop traffic flow on HTTP hit

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Sonu Jaiswal

I have configured L2TP VPN on PfSense 21.05-RELEASE (amd64) and fedora 33 as client, once VPN is connected I can ping remote host but as soon as I tied to hit HTTP site (google.com) traffic flow of VPN stops In TCP dump can see outgoing traffic but no incoming traffic coming back after HTTP request also checked PfSense firewall no drops there and moving traffic back to client but client somehow drooping the traffic

tcpdump: verbose output suppressed, use -v[v]... for full protocol decode

listening on ppp0, link-type LINUX_SLL (Linux cooked v1), snapshot length 262144 bytes

14:10:37.880312 IP fedora > b.resolvers.Level3.net: ICMP echo request, id 25, seq 1, length 64

14:10:38.046771 IP b.resolvers.Level3.net > fedora: ICMP echo reply, id 25, seq 1, length 64

14:10:38.880819 IP fedora > b.resolvers.Level3.net: ICMP echo request, id 25, seq 2, length 64

14:10:39.047254 IP b.resolvers.Level3.net > fedora: ICMP echo reply, id 25, seq 2, length 64

14:10:41.270579 IP fedora.57206 > 10.200.0.1.hostmon: Flags [S], seq 1682601984, win 65280, options [mss 1360,nop,nop,sackOK,nop,wscale 7,tfo cookiereq,nop,nop], length 0

14:10:46.315439 IP fedora.57208 > 10.200.0.1.hostmon: Flags [S], seq 324093924, win 65280, options [mss 1360,nop,nop,sackOK,nop,wscale 7,tfo cookiereq,nop,nop], length 0

14:10:46.315486 IP fedora.57210 > 10.200.0.1.hostmon: Flags [S], seq 448269744, win 65280, options [mss 1360,nop,nop,sackOK,nop,wscale 7,tfo cookiereq,nop,nop], length 0

14:10:50.589777 IP fedora.55422 > 82.221.107.34.bc.googleusercontent.com.http: Flags [.], ack 1, win 508, length 0

14:10:50.589793 IP fedora.55420 > 82.221.107.34.bc.googleusercontent.com.http: Flags [.], ack 1, win 508, length 0

14:10:50.627891 IP 82.221.107.34.bc.googleusercontent.com.http > fedora.55420: Flags [.], ack 1, win 265, length 0

14:10:50.627904 IP 82.221.107.34.bc.googleusercontent.com.http > fedora.55422: Flags [.], ack 1, win 261, length 0

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