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authorBill Nottingham <notting@redhat.com>2003-07-02 05:19:05 +0000
committerBill Nottingham <notting@redhat.com>2003-07-02 05:19:05 +0000
commite7ac60c583cf4d6d291d645e620b14bfc90f9bda (patch)
tree3a5c4341bded475b5d8d38153f22653f47a79d04 /sysconfig/network-scripts/ifup-ipsec
parent5c546c016732370d99adff1565b7dc7d002fd056 (diff)
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automatic keying support. not yet tested, either.
Diffstat (limited to 'sysconfig/network-scripts/ifup-ipsec')
-rwxr-xr-xsysconfig/network-scripts/ifup-ipsec152
1 files changed, 144 insertions, 8 deletions
diff --git a/sysconfig/network-scripts/ifup-ipsec b/sysconfig/network-scripts/ifup-ipsec
index 4cdade86..363eac63 100755
--- a/sysconfig/network-scripts/ifup-ipsec
+++ b/sysconfig/network-scripts/ifup-ipsec
@@ -6,18 +6,36 @@
#
# Configuration parameters
#
-# Manual keying:
-#
# SRC = source address. Not required.
# DST = destination address
# SRCNET = source net (for tunneling)
# DSTNET = destination network (for tunneling)
-# AH_PROTO = protocol to use for AH (defaults to HMAC-MD5)
-# ESP_PROTO = protocol to use for ESP (defaults to 3DES)
-# KEY_AH = AH key
-# KEY_ESP = ESP key
+#
+# Manual keying:
+#
+# AH_PROTO{_IN,_OUT} = protocol to use for AH (defaults to HMAC-MD5)
+# ESP_PROTO{_IN,_OUT} = protocol to use for ESP (defaults to 3DES)
+# KEY_AH{_IN,_OUT} = AH key
+# KEY_ESP{_IN,_OUT} = ESP key
# SPI[1..4] = SPIs to use
#
+# _IN and _OUT specifiers are for using different keys or protocols for inccoming
+# and outgoing packets. If neither _IN or _OUT variants are set, the same keys
+# or protocols will be used for both.
+#
+# Automatic keying:
+#
+# IKE_METHOD=PSK|X509|RSA
+# PSK = preshared keys (shared secret)
+# X509 = X.509 certificates
+# RSA = RSA host keys in DNS (not yet implemented)
+# GSSAPI = GSSAPI authentication
+# IKE_PSK = preshared key for this connection
+# IKE_CERTFILE = our certificate file name for X509 IKE
+# IKE_PEER_CERTFILE = peer public cert filename for X509 IKE
+# IKE_DNSSEC = retrieve peer public certs from DNS
+# (otherwise uses certificate information sent over IKE)
+# IKE_RSA_KEY = RSA key for RSA IKE
#
if [ -n "$KEY_AH" -o -n "$KEY_ESP" ]; then
@@ -40,17 +58,27 @@ if [ -z "$KEY_ESP_OUT" -a -n "$KEY_ESP" ]; then
KEY_ESP_OUT=$KEY_ESP
fi
-
if [ -n "$IKE_PSK" ]; then
KEYING=automatic
IKE_METHOD=PSK
fi
-if [ -n "$CERT_NAME" ]; then
+if [ -n "$IKE_CERTFILE" ]; then
+ KEYING=automatic
+ IKE_METHOD=X509
+fi
+
+if [ -n "$IKE_PEER_CERTFILE" ]; then
+ KEYING=automatic
+ IKE_METHOD=X509
+fi
+
+if [ -n "$IKE_DNSSEC" ]; then
KEYING=automatic
IKE_METHOD=X509
fi
+
if [ -n "$RSA_KEY" ]; then
KEYING=automatic
IKE_METHOD=RSA
@@ -62,6 +90,8 @@ else
MODE=host
fi
+[ -z "$KEYING" ] && KEYING=manual
+
if [ "$KEYING" = "manual" ]; then
# Get source address
if [ -n "$SRC" ]; then
@@ -131,3 +161,109 @@ spdadd $DSTNET $SRCNET any -P in ipsec
EOF
fi
fi
+
+if [ "$KEYING" = "automatic" ]; then
+ if [ "$MODE" = "host" ]; then
+ /sbin/setkey -c << EOF
+spddelete $SRC $DST any -P out;
+spddelete $DST $SRC any -P in;
+
+spdadd $SRC $DST any -P out ipsec
+ ${KEY_ESP_OUT:+esp/transport//require}
+ ${KEY_AH_OUT:+ah/transport//require}
+ ;
+
+spdadd $DST $SRC any -P in ipsec
+ ${KEY_ESP_IN:+esp/transport//require}
+ ${KEY_AH_IN:+ah/transport//require}
+ ;
+EOF
+ else
+ [ -n "$SRCNET" ] && SRCNET="$SRC/32"
+ [ -n "$DSTNET" ] && DSTNET="$DST/32"
+
+ /sbin/setkey -c << EOF
+spddelete $SRCNET $DSTNET any -P out;
+spddelete $DSTNET $SRCNET any -P in;
+
+spdadd $SRCNET $DSTNET any -P out ipsec
+ ${KEY_ESP_OUT:+esp/tunnel/$SRC-$DEST/require}
+ ${KEY_AH_OUT:+ah/tunnel/$SRC-$DEST/require}
+ ;
+
+spdadd $DSTNET $SRCNET any -P in ipsec
+ ${KEY_ESP_IN:+esp/tunnel/$DEST-$SRC/require}
+ ${KEY_AH_IN:+ah/tunnel/$DEST-$SRC/require}
+ ;
+EOF
+ fi
+ if [ "$IKE_METHOD" = "PSK" ]; then
+ tmpfile=`mktemp /etc/racoon/psk.XXXXXX`
+ grep -v "^$DST" /etc/racoon/psk.txt > $tmpfile
+ echo "$DST $IKE_PSK" >> $tmpfile
+ mv -f $tmpfile /etc/racoon/psk.txt
+ fi
+ if [ ! -f /etc/racoon/$DST.conf -o /etc/racoon/$DST.conf -ot $1 ] ; then
+ cat > /etc/racoon/$DST.conf << EOF
+remote $DST
+{
+ exchange_mode agressive, main;
+EOF
+ case "$IKE_METHOD" in
+ PSK)
+ cat >> /etc/racoon/$DST.conf << EOF
+ my_identifier address;
+ proposal {
+ encryption_algorithm $ESP_PROTO;
+ hash_alogirtihm $AH_PROTO;
+ authentication_method pre_shared_key;
+ dh_group 2 ;
+ }
+}
+EOF
+ ;;
+ X509)
+ cat >> /etc/racoon/$DST.conf << EOF
+ my_identifier asn1dn;
+ peers_identifier asn1dn;
+ certificate_type x509 "$IKE_CERTFILE.public" "$IKE_CERTFILE.private";
+EOF
+ if [ -n "$IKE_DNSSEC" ]; then
+ echo " peers_certfile dnssec;" >> /etc/racoon/$DST.conf
+ fi
+ if [ -n "$IKE_PEER_CERTFILE" ]; then
+ echo " peers_certfile $IKE_PEER_CERTFILE;" >> /etc/racoon/$DST.conf
+ fi
+ cat >> /etc/racoon/$DST.conf << EOF
+ proposal {
+ encryption_algorithm $ESP_PROTO;
+ hash_algorithm $AH_PROTO;
+ authentication_method rsasig;
+ dh_group 2;
+ }
+}
+EOF
+ ;;
+ RSA)
+ # not supported yet, only in freeswan
+ ;;
+ GSSAPI)
+ cat >> /etc/racoon/$DST.conf << EOF
+ my_identifier address;
+ proposal {
+ encryption_algorithm $ESP_PROTO;
+ hash_alogirtihm $AH_PROTO;
+ authentication_method gssapi_krb;
+ dh_group 2 ;
+ }
+}
+EOF
+ esac
+ racoontmp=`mktemp /etc/racoon/racoon.XXXXXX`
+ grep -v "^include $DST.conf" /etc/racoon/racoon.conf >> $racoontmp
+ echo "include $DST.conf" >> $racoontmp
+ mv -f $racoontmp /etc/racoon/racoon.conf
+ pidof -x /usr/sbin/racoon > /dev/null 2>&1 && killall -HUP /usr/sbin/racoon
+ fi
+ pidof -x /usr/sbin/racoon || /usr/sbin/racoon
+fi