diff --git a/connmgr.go b/connmgr.go
index fda493c..aa42457 100644
--- a/connmgr.go
+++ b/connmgr.go
@@ -176,6 +176,23 @@ func (cm *BasicConnMgr) Unprotect(id peer.ID, tag string) (protected bool) {
 	return true
 }
 
+func (cm *BasicConnMgr) IsProtected(id peer.ID, tag string) (protected bool) {
+	cm.plk.Lock()
+	defer cm.plk.Unlock()
+
+	tags, ok := cm.protected[id]
+	if !ok {
+		return false
+	}
+
+	if tag == "" {
+		return true
+	}
+
+	_, protected = tags[tag]
+	return protected
+}
+
 // peerInfo stores metadata for a given peer.
 type peerInfo struct {
 	id       peer.ID
diff --git a/go.mod b/go.mod
index 00c71eb..35ccb8b 100644
--- a/go.mod
+++ b/go.mod
@@ -6,7 +6,7 @@ require (
 	github.com/benbjohnson/clock v1.0.2
 	github.com/ipfs/go-detect-race v0.0.1
 	github.com/ipfs/go-log v1.0.4
-	github.com/libp2p/go-libp2p-core v0.5.6
+	github.com/libp2p/go-libp2p-core v0.5.7
 	github.com/multiformats/go-multiaddr v0.2.2
 	github.com/stretchr/testify v1.4.0
 )
diff --git a/go.sum b/go.sum
index bc05428..b984868 100644
--- a/go.sum
+++ b/go.sum
@@ -2,8 +2,6 @@ cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMT
 github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
 github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/aead/siphash v1.0.1/go.mod h1:Nywa3cDsYNNK3gaciGTWPwHt0wlpNV15vwmswBAUSII=
-github.com/benbjohnson/clock v1.0.1 h1:lVM1R/o5khtrr7t3qAr+sS6uagZOP+7iprc7gS3V9CE=
-github.com/benbjohnson/clock v1.0.1/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
 github.com/benbjohnson/clock v1.0.2 h1:Z0CN0Yb4ig9sGPXkvAQcGJfnrrMQ5QYLCMPRi9iD7YE=
 github.com/benbjohnson/clock v1.0.2/go.mod h1:bGMdMPoPVvcYyt1gHDf4J2KE153Yf9BuiUKYMaxlTDM=
 github.com/btcsuite/btcd v0.20.1-beta h1:Ik4hyJqN8Jfyv3S4AGBOmyouMsYE3EdYODkMbQjwPGw=
@@ -57,8 +55,8 @@ github.com/libp2p/go-buffer-pool v0.0.1/go.mod h1:xtyIz9PMobb13WaxR6Zo1Pd1zXJKYg
 github.com/libp2p/go-buffer-pool v0.0.2 h1:QNK2iAFa8gjAe1SPz6mHSMuCcjs+X1wlHzeOSqcmlfs=
 github.com/libp2p/go-buffer-pool v0.0.2/go.mod h1:MvaB6xw5vOrDl8rYZGLFdKAuk/hRoRZd1Vi32+RXyFM=
 github.com/libp2p/go-flow-metrics v0.0.3/go.mod h1:HeoSNUrOJVK1jEpDqVEiUOIXqhbnS27omG0uWU5slZs=
-github.com/libp2p/go-libp2p-core v0.5.6 h1:IxFH4PmtLlLdPf4fF/i129SnK/C+/v8WEX644MxhC48=
-github.com/libp2p/go-libp2p-core v0.5.6/go.mod h1:txwbVEhHEXikXn9gfC7/UDDw7rkxuX0bJvM49Ykaswo=
+github.com/libp2p/go-libp2p-core v0.5.7 h1:QK3xRwFxqd0Xd9bSZL+8yZ8ncZZbl6Zngd/+Y+A6sgQ=
+github.com/libp2p/go-libp2p-core v0.5.7/go.mod h1:txwbVEhHEXikXn9gfC7/UDDw7rkxuX0bJvM49Ykaswo=
 github.com/libp2p/go-msgio v0.0.4/go.mod h1:63lBBgOTDKQL6EWazRMCwXsEeEeK9O2Cd+0+6OOuipQ=
 github.com/libp2p/go-openssl v0.0.5 h1:pQkejVhF0xp08D4CQUcw8t+BFJeXowja6RVcb5p++EA=
 github.com/libp2p/go-openssl v0.0.5/go.mod h1:unDrJpgy3oFr+rqXsarWifmJuNnJR4chtO1HmaZjggc=