Date: Mon, 30 Jun 2003 19:12:04 -0700 From: Koroush Saraf <koroush.saraf@lmco.com> To: freebsd-security@freebsd.org Subject: Fw: VPN setup problem - proxy arp I think Message-ID: <006c01c33f76$2a480680$04f4c581@BSDWIN2KKOROUSH>
next in thread | raw e-mail | index | archive | help
Hi all, I read the setup at http://www.blackh0le.net/articles/vpn-dun-howto.html to setup my VPN. However, I'm having a problem which I think is proxy-ARP not working. I like to ask you to see if you know what's going on. When I ping 10.77.1.1 from windows XP machine the packets get to the 10.77.1.1 machine, but they don't have a return path to get back. When I do ping the windows machine from 10.77.1.1 I get: ping: sendto: Host is down When I add static route to 10.77.1.1 the machines can talk to each other. (route add 10.77.1.50/32 10.77.1.2) But I don't think I need to setup a static route if Proxy ARP worked! I've included my config files in this email. Please note that the I get a message back saying "[pptp1] no interface to proxy arp on for 10.77.1.50" could this be my problem? how can I fix it? Thanks very much, ~koroush ========================= I network looks as follows Freebsd 4.6 IP 10.77.1.1/24 | | fxp0:10.77.1.2/24 Freebsd 4.8 (DELL2) (only 1 network card) ng0: 10.77.13 | | Windows XP machine with tunnel. 10.77.1.50 ================== Config files for Dell 2: DELL2# ifconfig -a fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 inet 129.197.244.10 netmask 0xfffffff0 broadcast 129.197.244.15 inet 10.0.0.249 netmask 0xffffff00 broadcast 10.0.0.255 inet 10.77.1.2 netmask 0xffffff00 broadcast 10.77.1.255 inet 10.77.2.2 netmask 0xffffff00 broadcast 10.77.2.255 inet 10.77.3.2 netmask 0xffffff00 broadcast 10.77.3.255 inet 10.77.4.2 netmask 0xffffff00 broadcast 10.77.4.255 inet 10.77.5.2 netmask 0xffffff00 broadcast 10.77.5.255 ether 00:07:e9:87:ca:4f media: Ethernet autoselect (100baseTX <full-duplex>) status: active lp0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> mtu 1500 lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 inet 127.0.0.1 netmask 0xff000000 lo1: flags=8008<LOOPBACK,MULTICAST> mtu 16384 ppp0: flags=8010<POINTOPOINT,MULTICAST> mtu 1500 sl0: flags=c010<POINTOPOINT,LINK2,MULTICAST> mtu 552 faith0: flags=8002<BROADCAST,MULTICAST> mtu 1500 ng0: flags=88d1<UP,POINTOPOINT,RUNNING,NOARP,SIMPLEX,MULTICAST> mtu 1256 inet 10.77.1.2 --> 10.77.1.50 netmask 0xffffffff ng1: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500 ng2: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500 ng3: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500 ng4: flags=8890<POINTOPOINT,NOARP,SIMPLEX,MULTICAST> mtu 1500 =============== DELL2# pwd /usr/local/etc/mpd DELL2# cat mpd.conf default: load client1 load client2 load client3 load client4 load client5 pptp_common_settings: set link type pptp set pptp enable incoming set pptp disable originate set iface disable on-demand set iface enable proxy-arp # set iface idle 1800 set bundle enable multilink set link yes acfcomp protocomp set link no pap chap set link enable chap # set link keep-alive 10 60 set link mtu 1260 set ipcp yes vjcomp # set ipcp ranges 10.77.1.1/32 10.77.1.50/32 # set ipcp dns 10.77.1.1 # set ipcp nbns 10.77.1.1 set bundle enable compression set ccp yes mppc set ccp yes mpp-e40 # set ccp yes mpp-e128 set ccp yes mpp-stateless client1: new -i ng0 pptp1 pptp1 set ipcp range 10.77.1.2/24 10.77.1.50/24 load pptp_common_settings client2: new -i ng1 pptp2 pptp2 set ipcp range 10.77.2.2/32 10.77.2.50/32 load pptp_common_settings client3: new -i ng2 pptp3 pptp3 set ipcp range 10.77.3.3/32 10.77.3.50/32 load pptp_common_settings client4: new -i ng3 pptp4 pptp4 set ipcp range 10.77.4.3/32 10.77.4.50/32 load pptp_common_settings client5: new -i ng4 pptp5 pptp5 set ipcp range 10.77.5.3/32 10.77.5.50/32 load pptp_common_settings DELL2# ===================== DELL2# cat mpd.secret demo1 "demo1" 10.77.1.50/24 demo2 "demo2" 10.77.2.50/24 demo3 "demo3" 10.77.3.50/24 demo4 "demo4" 10.77.4.50/24 demo5 "demo5" 10.77.5.50/24 ========RUN TIME ======== DELL2# mdp default mdp: Command not found. DELL2# mpd default Multi-link PPP for FreeBSD, by Archie L. Cobbs. Based on iij-ppp, by Toshiharu OHNO. mpd: pid 281, version 3.13 (root@DELL2.lmms.lmco.com 09:44 23-Jun-2003) [pptp1] ppp node is "mpd281-pptp1" mpd: local IP address for PPTP is 129.197.244.10 [pptp1] using interface ng0 [pptp1] device type already set to pptp [pptp2] ppp node is "mpd281-pptp2" [pptp2] using interface ng1 [pptp2] device type already set to pptp [pptp3] ppp node is "mpd281-pptp3" [pptp3] using interface ng2 [pptp3] device type already set to pptp [pptp4] ppp node is "mpd281-pptp4" [pptp4] using interface ng3 [pptp4] device type already set to pptp [pptp5] ppp node is "mpd281-pptp5" [pptp5] using interface ng4 [pptp5] device type already set to pptp [pptp5:pptp5] mpd: PPTP connection from 129.197.244.12:1127 pptp0: attached to connection with 129.197.244.12:1127 [pptp1] IFACE: Open event [pptp1] IPCP: Open event [pptp1] IPCP: state change Initial --> Starting [pptp1] IPCP: LayerStart [pptp1] IPCP: Open event [pptp1] bundle: OPEN event in state CLOSED [pptp1] opening link "pptp1"... [pptp1] link: OPEN event [pptp1] LCP: Open event [pptp1] LCP: state change Initial --> Starting [pptp1] LCP: LayerStart [pptp1] device: OPEN event in state DOWN [pptp1] attaching to peer's outgoing call [pptp1] device is now in state OPENING [pptp1] device: UP event in state OPENING [pptp1] device is now in state UP [pptp1] link: UP event [pptp1] link: origination is remote [pptp1] LCP: Up event [pptp1] LCP: state change Starting --> Req-Sent [pptp1] LCP: phase shift DEAD --> ESTABLISH [pptp1] LCP: SendConfigReq #1 ACFCOMP PROTOCOMP MRU 1500 MAGICNUM 5611757b AUTHPROTO CHAP MSOFTv2 MP MRRU 1600 MP SHORTSEQ ENDPOINTDISC [802.1] 00 07 e9 87 ca 4f pptp0-0: ignoring SetLinkInfo [pptp1] LCP: rec'd Configure Request #0 link 0 (Req-Sent) MRU 1400 MAGICNUM 4d905023 PROTOCOMP ACFCOMP CALLBACK Not supported [pptp1] LCP: SendConfigRej #0 CALLBACK [pptp1] LCP: rec'd Configure Request #1 link 0 (Req-Sent) MRU 1400 MAGICNUM 4d905023 PROTOCOMP ACFCOMP [pptp1] LCP: SendConfigAck #1 MRU 1400 MAGICNUM 4d905023 PROTOCOMP ACFCOMP [pptp1] LCP: state change Req-Sent --> Ack-Sent [pptp1] LCP: SendConfigReq #2 ACFCOMP PROTOCOMP MRU 1500 MAGICNUM 5611757b AUTHPROTO CHAP MSOFTv2 MP MRRU 1600 MP SHORTSEQ ENDPOINTDISC [802.1] 00 07 e9 87 ca 4f [pptp1] LCP: rec'd Configure Reject #2 link 0 (Ack-Sent) MP MRRU 1600 MP SHORTSEQ ENDPOINTDISC [802.1] 00 07 e9 87 ca 4f [pptp1] LCP: SendConfigReq #3 ACFCOMP PROTOCOMP MRU 1500 MAGICNUM 5611757b AUTHPROTO CHAP MSOFTv2 [pptp1] LCP: rec'd Configure Ack #3 link 0 (Ack-Sent) ACFCOMP PROTOCOMP MRU 1500 MAGICNUM 5611757b AUTHPROTO CHAP MSOFTv2 [pptp1] LCP: state change Ack-Sent --> Opened [pptp1] LCP: phase shift ESTABLISH --> AUTHENTICATE [pptp1] LCP: auth: peer wants nothing, I want CHAP [pptp1] CHAP: sending CHALLENGE [pptp1] LCP: LayerUp [pptp1] LCP: rec'd Ident #2 link 0 (Opened) MESG: MSRASV5.10 pptp0-0: ignoring SetLinkInfo [pptp1] LCP: rec'd Ident #3 link 0 (Opened) MESG: MSRAS-1-DELL4 [pptp1] CHAP: rec'd RESPONSE #1 Name: "demo1" Peer name: "demo1" Response is valid [pptp1] CHAP: sending SUCCESS [pptp1] LCP: authorization successful [pptp1] LCP: phase shift AUTHENTICATE --> NETWORK [pptp1] setting interface ng0 MTU to 1260 bytes [pptp1] up: 1 link, total bandwidth 64000 bps [pptp1] IPCP: Up event [pptp1] IPCP: state change Starting --> Req-Sent [pptp1] IPCP: SendConfigReq #1 IPADDR 10.77.1.2 COMPPROTO VJCOMP, 16 comp. channels, no comp-cid [pptp1] CCP: Open event [pptp1] CCP: state change Initial --> Starting [pptp1] CCP: LayerStart [pptp1] CCP: Up event [pptp1] CCP: state change Starting --> Req-Sent [pptp1] CCP: SendConfigReq #1 MPPC 0x01000020: MPPE, 40 bit, stateless [pptp1] CCP: rec'd Configure Request #4 link 0 (Req-Sent) MPPC 0x01000001: MPPC [pptp1] CCP: SendConfigNak #4 MPPC 0x01000020: MPPE, 40 bit, stateless [pptp1] IPCP: rec'd Configure Request #5 link 0 (Req-Sent) IPADDR 0.0.0.0 NAKing with 10.77.1.50 PRIDNS 0.0.0.0 PRINBNS 0.0.0.0 SECDNS 0.0.0.0 SECNBNS 0.0.0.0 [pptp1] IPCP: SendConfigRej #5 PRIDNS 0.0.0.0 PRINBNS 0.0.0.0 SECDNS 0.0.0.0 SECNBNS 0.0.0.0 [pptp1] IPCP: rec'd Configure Reject #1 link 0 (Req-Sent) COMPPROTO VJCOMP, 16 comp. channels, no comp-cid [pptp1] IPCP: SendConfigReq #2 IPADDR 10.77.1.2 [pptp1] CCP: rec'd Configure Ack #1 link 0 (Req-Sent) MPPC 0x01000020: MPPE, 40 bit, stateless [pptp1] CCP: state change Req-Sent --> Ack-Rcvd [pptp1] CCP: rec'd Configure Request #6 link 0 (Ack-Rcvd) MPPC 0x01000020: MPPE, 40 bit, stateless [pptp1] CCP: SendConfigAck #6 MPPC 0x01000020: MPPE, 40 bit, stateless [pptp1] CCP: state change Ack-Rcvd --> Opened [pptp1] CCP: LayerUp Compress using: MPPE, 40 bit, stateless Decompress using: MPPE, 40 bit, stateless [pptp1] setting interface ng0 MTU to 1256 bytes [pptp1] IPCP: rec'd Configure Request #7 link 0 (Req-Sent) IPADDR 0.0.0.0 NAKing with 10.77.1.50 [pptp1] IPCP: SendConfigNak #7 IPADDR 10.77.1.50 [pptp1] IPCP: rec'd Configure Ack #2 link 0 (Req-Sent) IPADDR 10.77.1.2 [pptp1] IPCP: state change Req-Sent --> Ack-Rcvd [pptp1] IPCP: rec'd Configure Request #8 link 0 (Ack-Rcvd) IPADDR 10.77.1.50 10.77.1.50 is OK [pptp1] IPCP: SendConfigAck #8 IPADDR 10.77.1.50 [pptp1] IPCP: state change Ack-Rcvd --> Opened [pptp1] IPCP: LayerUp 10.77.1.2 -> 10.77.1.50 [pptp1] IFACE: Up event [pptp1] setting interface ng0 MTU to 1256 bytes [pptp1] exec: /sbin/ifconfig ng0 10.77.1.2 10.77.1.50 netmask 0xffffffff -link0 [pptp1] no interface to proxy arp on for 10.77.1.50 [pptp1] exec: /sbin/route add 10.77.1.2 -iface lo0 [pptp1] IFACE: Up event
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?006c01c33f76$2a480680$04f4c581>