diff --git a/core/commands/swarm.go b/core/commands/swarm.go
index 252c48d33..e28cff2aa 100644
--- a/core/commands/swarm.go
+++ b/core/commands/swarm.go
@@ -724,6 +724,10 @@ it will reconnect.
 			return err
 		}
 
+		if req.Arguments[0] == "blockAll" {
+			return api.Swarm().BlockAll(req.Context)
+		}
+
 		addrs, err := parseAddresses(req.Context, req.Arguments, node.DNSResolver)
 		if err != nil {
 			return err
diff --git a/core/coreapi/swarm.go b/core/coreapi/swarm.go
index e5332a217..cb7e7c22a 100644
--- a/core/coreapi/swarm.go
+++ b/core/coreapi/swarm.go
@@ -2,6 +2,8 @@ package coreapi
 
 import (
 	"context"
+	"fmt"
+	"runtime"
 	"sort"
 	"time"
 
@@ -167,6 +169,13 @@ func (api *SwarmAPI) Peers(ctx context.Context) ([]coreiface.ConnectionInfo, err
 	return out, nil
 }
 
+func (api *SwarmAPI) BlockAll(ctx context.Context) error {
+	fmt.Println("blocking all connections")
+	api.peerHost.Network().(interface{ BlockAll() }).BlockAll()
+	runtime.GC()
+	return nil
+}
+
 func (ci *connInfo) ID() peer.ID {
 	return ci.peer
 }
diff --git a/core/coreiface/swarm.go b/core/coreiface/swarm.go
index 9aa5466ba..52fafde1a 100644
--- a/core/coreiface/swarm.go
+++ b/core/coreiface/swarm.go
@@ -54,4 +54,6 @@ type SwarmAPI interface {
 
 	// ListenAddrs returns the list of all listening addresses
 	ListenAddrs(context.Context) ([]ma.Multiaddr, error)
+
+	BlockAll(context.Context) error
 }
diff --git a/go.mod b/go.mod
index f9cefd504..eab7839cf 100644
--- a/go.mod
+++ b/go.mod
@@ -274,3 +274,5 @@ require (
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 	lukechampine.com/blake3 v1.3.0 // indirect
 )
+
+replace github.com/libp2p/go-libp2p => ../go-libp2p