diff --git a/src/go-socks5/auth.go b/src/go-socks5/auth.go
index 7811e2a..5346c89 100644
--- a/src/go-socks5/auth.go
+++ b/src/go-socks5/auth.go
@@ -15,10 +15,17 @@ const (
 )
 
 var (
-	UserAuthFailed  = fmt.Errorf("User authentication failed")
 	NoSupportedAuth = fmt.Errorf("No supported authentication mechanism")
 )
 
+type UserAuthFailed struct {
+	Username, Password string
+}
+
+func (err UserAuthFailed) Error() string {
+	return "User authentication failed: " + err.Username
+}
+
 // A Request encapsulates authentication state provided
 // during negotiation
 type AuthContext struct {
@@ -102,7 +109,7 @@ func (a UserPassAuthenticator) Authenticate(reader io.Reader, writer io.Writer)
 		if _, err := writer.Write([]byte{userAuthVersion, authFailure}); err != nil {
 			return nil, err
 		}
-		return nil, UserAuthFailed
+		return nil, UserAuthFailed{Username: string(user), Password: string(pass)}
 	}
 
 	// Done
diff --git a/src/go-socks5/auth_test.go b/src/go-socks5/auth_test.go
index f782f4a..8167ca2 100644
--- a/src/go-socks5/auth_test.go
+++ b/src/go-socks5/auth_test.go
@@ -77,7 +77,7 @@ func TestPasswordAuth_Invalid(t *testing.T) {
 	s, _ := New(&Config{AuthMethods: []Authenticator{cator}})
 
 	ctx, err := s.authenticate(&resp, req)
-	if err != UserAuthFailed {
+	if _, ok := err.(UserAuthFailed); !ok {
 		t.Fatalf("err: %v", err)
 	}
 
diff --git a/src/go-socks5/go.mod b/src/go-socks5/go.mod
index b7d2993..c65e779 100644
--- a/src/go-socks5/go.mod
+++ b/src/go-socks5/go.mod
@@ -1,3 +1,5 @@
 module github.com/armon/go-socks5
 
 go 1.22.3
+
+require golang.org/x/net v0.25.0
diff --git a/src/go-socks5/go.sum b/src/go-socks5/go.sum
new file mode 100644
index 0000000..ec14cb3
--- /dev/null
+++ b/src/go-socks5/go.sum
@@ -0,0 +1,2 @@
+golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
diff --git a/src/go-socks5/socks5.go b/src/go-socks5/socks5.go
index a17be68..31a843d 100644
--- a/src/go-socks5/socks5.go
+++ b/src/go-socks5/socks5.go
@@ -120,6 +120,10 @@ func (s *Server) Serve(l net.Listener) error {
 // ServeConn is used to serve a single connection.
 func (s *Server) ServeConn(conn net.Conn) error {
 	defer conn.Close()
+	remoteAddr, ok := conn.RemoteAddr().(*net.TCPAddr)
+	if !ok {
+		return fmt.Errorf("Invalid remote address type: %T", conn.RemoteAddr())
+	}
 	bufConn := bufio.NewReader(conn)
 
 	// Read the version byte
@@ -139,7 +143,7 @@ func (s *Server) ServeConn(conn net.Conn) error {
 	// Authenticate the connection
 	authContext, err := s.authenticate(conn, bufConn)
 	if err != nil {
-		err = fmt.Errorf("Failed to authenticate: %v", err)
+		err = fmt.Errorf("Failed to authenticate %s:%d: %w", remoteAddr.IP, remoteAddr.Port, err)
 		s.config.Logger.Printf("[ERR] socks: %v", err)
 		return err
 	}
@@ -154,9 +158,7 @@ func (s *Server) ServeConn(conn net.Conn) error {
 		return fmt.Errorf("Failed to read destination address: %v", err)
 	}
 	request.AuthContext = authContext
-	if client, ok := conn.RemoteAddr().(*net.TCPAddr); ok {
-		request.RemoteAddr = &AddrSpec{IP: client.IP, Port: client.Port}
-	}
+	request.RemoteAddr = &AddrSpec{IP: remoteAddr.IP, Port: remoteAddr.Port}
 
 	// Process the client request
 	if err := s.handleRequest(request, conn); err != nil {
diff --git a/src/go.mod b/src/go.mod
index 289120a..7ac5511 100644
--- a/src/go.mod
+++ b/src/go.mod
@@ -7,7 +7,7 @@ replace github.com/armon/go-socks5 => ./go-socks5
 require (
 	github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5
 	github.com/kisom/netallow v0.0.0-20200609175051-08f6b004e41a
-	layeh.com/radius v0.0.0-20221205141417-e7fbddd11d68
+	layeh.com/radius v0.0.0-20231213012653-1006025d24f8
 )
 
-require golang.org/x/net v0.5.0 // indirect
+require golang.org/x/net v0.25.0 // indirect
diff --git a/src/go.sum b/src/go.sum
index f91017a..10a2c0f 100644
--- a/src/go.sum
+++ b/src/go.sum
@@ -1,24 +1,51 @@
-github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio=
-github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs=
 github.com/kisom/netallow v0.0.0-20200609175051-08f6b004e41a h1:4T7cUpk4OIqaxn7i41yVYEU7/4gjTKuvqlrSqbBwwe0=
 github.com/kisom/netallow v0.0.0-20200609175051-08f6b004e41a/go.mod h1:fHrMiR3Isu09r3MBg9oqlp0E+qBtRp6qsig0hpmgXYg=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
 golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
-golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
+golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
 golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
 golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
 golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859 h1:R/3boaszxrf1GEUWTVDzSKVwLmSJpwZ1yqXm8j0v2QI=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.5.0 h1:GyT4nK/YDHSqa1c4753ouYCDajOYKTja9Xb/OHtgvSw=
-golang.org/x/net v0.5.0/go.mod h1:DivGGAXEgPSlEBzxGzZI+ZLohi+xUj054jfeKui00ws=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
+golang.org/x/net v0.25.0 h1:d/OCCoBEUq33pjydKrGQhw7IlUPI2Oylr+8qLx49kac=
+golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
+golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-layeh.com/radius v0.0.0-20221205141417-e7fbddd11d68 h1:2NDro2Jzkrqfngy/sA5GVnChs7fx8EzcQKFi/lI2cfg=
-layeh.com/radius v0.0.0-20221205141417-e7fbddd11d68/go.mod h1:pFWM9De99EY9TPVyHIyA56QmoRViVck/x41WFkUlc9A=
+layeh.com/radius v0.0.0-20231213012653-1006025d24f8 h1:orYXpi6BJZdvgytfHH4ybOe4wHnLbbS71Cmd8mWdZjs=
+layeh.com/radius v0.0.0-20231213012653-1006025d24f8/go.mod h1:QRf+8aRqXc019kHkpcs/CTgyWXFzf+bxlsyuo2nAl1o=