IPsec

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  Phase 2 : "invalid HASH_V1 payload length" error
  • Peter2121

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  @konstanti said in Phase 2 : "invalid HASH_V1 payload length" error: @peter2121 Wanted to know if my decision helped ? Thank you, I could change StrongSWan parameters using your advise. I still have problems with my tunnels though :( Probably, there are several problems, I've just eliminated the first one.
• M

  IPsec VTI with Palo Alto
  • msnetworks

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  I wouldn't put any settings in unless you know they are needed. Lowering MSS might reduce throughput (increase packets-per-second for the same payload) for no reason.
• S

  IPSEC VTI Tunnels
  • ScottS

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  @dragon2611 any update? I have been having a reoccurring issue, both ssh issues, and over all routing and connectivity issues through the VTI tunnel. I am also have the phase2 reestablish and not kill off old session/id. I followed the hangouts setup verbatim. I know its the VTI as communication via openvpn and client if flawless.
• 4

  Routing to a specific host via IPSec
  • 4pmtech

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  https://www.youtube.com/watch?v=AKMZ9rNQx7Y Might help.
• A

  Traffic from internet through IPSEC VTI not returning the same way
  • adrianesqq

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  @adrianesqq said in Traffic from internet through IPSEC VTI not returning the same way: Do you plan to add/repair return-to functionality? Can I post request somewhere? It's not up to us, it's broken in FreeBSD/pf
• L

  Restrict access for certain VPN users?
  • luas

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  @luas Hey If the problem is still relevant, I think I know how to solve it
• J

  IPsec dropping
  • jvangent100

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  You mean like this? https://www.netgate.com/docs/pfsense/vpn/ipsec/ipsec-troubleshooting.html
• T

  IPSec VPN from pfSense to Cisco 1941 dropping connection (redacted)
  • TheWhiteWing01

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  Jan 11 10:21:26 charon 05[NET] <con1000|17> received packet: from 173.220.x.x[500] to 50.196.x.x[500] (380 bytes) Jan 11 10:21:26 charon 05[ENC] <con1000|17> parsed QUICK_MODE request 3356035729 [ HASH SA No KE ID ID ] Jan 11 10:21:26 charon 05[ENC] <con1000|17> received HASH payload does not match Jan 11 10:21:26 charon 05[IKE] <con1000|17> integrity check failed Jan 11 10:21:26 charon 05[ENC] <con1000|17> generating INFORMATIONAL_V1 request 3233859265 [ HASH N(INVAL_HASH) ] Jan 11 10:21:26 charon 05[NET] <con1000|17> sending packet: from 50.196.x.x[500] to 173.220.x.x[500] (76 bytes) Jan 11 10:21:26 charon 05[IKE] <con1000|17> QUICK_MODE request with message ID 3356035729 processing failed Jan 11 10:21:26 charon 05[NET] <con1000|17> received packet: from 173.220.x.x[500] to 50.196.x.x[500] (92 bytes) Jan 11 10:21:26 charon 05[ENC] <con1000|17> parsed INFORMATIONAL_V1 request 2703109558 [ HASH D ] Jan 11 10:21:26 charon 05[IKE] <con1000|17> received DELETE for IKE_SA con1000[17] Jan 11 10:21:26 charon 05[IKE] <con1000|17> deleting IKE_SA con1000[17] between 50.196.x.x[50.196.x.x]...173.220.x.x[173.220.x.x] Jan 11 10:21:26 charon 05[IKE] <con1000|17> IKE_SA con1000[17] state change: ESTABLISHED => DELETING Jan 11 10:21:26 charon 05[IKE] <con1000|17> IKE_SA con1000[17] state change: DELETING => DELETING Jan 11 10:21:26 charon 05[IKE] <con1000|17> IKE_SA con1000[17] state change: DELETING => DESTROYING Your side does not like the traffic selector in the P2 being sent by the other side. Please send the output from each of these on each node - the one that's working and the one that isn't: swanctl --list-conns swanctl --list-sas cat /var/etc/ipsec/ipsec.conf Send them in chat or I can send you a nextcloud upload link.
• T

  IPSec VPN from pfSense to Cisco1941 dropping connection
  • TheWhiteWing01

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  @konstanti The secondary Peer with the 96.65.x.x address is the office we setup to test the connection. The 96.65.x.x is the address for the SG-3100 that works, while the 50.196 address is the SG-3100 I'm having trouble with. The 173.220 address is the address for the Cisco router.
• M

  IPSEC Cisco ASA Issues
  • Monty1157

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  Hi Derelict, Yes, I agree, it's pretty arrogant of them. I could go on at length about how lazy and incompetent their network admin is, but that's not the issue here, but it doesn't help resolving the issue I have when I can't get any logs out of them, which has left me trying to solve a puzzle with only half the clues, and why I ended up posting here. Anyway, thank you so much for your help on this. Your comments have given me a new avenue to investigate. The split connections were not enabled on either tunnel as I didn't think it applied in this scenario (Two IPSEC VPNs going to different endpoints with a phase 1 config, and a single phase 2 config), but after you mentioning this, I started to look into Cisco ASA tunnels with split connections and to be honest, that's thrown up a whole lot more info around this that looks very, very, similar to the issues I'm seeing, which was the old phase 2 tunnel would re-key, a new key would be generated for the replacement phase 2 tunnel, then neither would be used with the firewall just sitting there unable to delete the old key, and the logs telling me the remote end wasn't accepting the new key either. I've enabled the split connections tick box on both VPNs and commented out the IPSEC restart commands in the crontab to see what transpires. At best, it works, and that would be great. At worst, at least I have a recent set of IPSEC logs with the debug output showing what's happening when things break. Once again, thanks for the pointers in the right direction with this. Cheers, Monty
• S

  IPSEC tunnel config works on 2.4.3p1, not on 2.4.4p1
  • sgw

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  @sgw said in IPSEC tunnel config works on 2.4.3p1, not on 2.4.4p1: seems like: we then tried swapping pfsenses again and additionally rebooted the Hitron "modem" in front of the pfsense. Tunnel came up immediately. So I assume there are some MAC-based filters built at bootup or something like that. Right. On the modem. You always have to reboot an upstream ISP device when you change the hardware behind it. Or at least it's a good idea especially if you have problems changing devices around. I usually: Disconnect the WAN patch cable between the modem and the WAN port Power cycle the upstream device and let it sync up and "go green" again Connect the modem to the new WAN port. This is primarily for normal US cable modems. Any ISP "Residential Gateway" might have other requirements.
• M

  IPsec with a transparent firewall
  • mullerit

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  Hello, I have the same problem. @jimp : i don't understand your solution. Can you explain me with more details please ? I made a schema : thank you very much if you can help me because I'm stuck. Ludo.
• J

  IPSec tunnel ping initialization
  • jok

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  Solved. It was a firewall rules problem. Thanks
• T

  IPsec failover - without dyndns
  • TheTomTom

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• B

  Cisco AnyConnect - Disconnects and Reconnects every 20 minutes
  • bwalkco

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• P

  Split DNS on iOS not working
  • PhYrE

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  Have a look here: https://forum.netgate.com/topic/95361/solved-cross-platform-ikev2-vpn-no-dns-on-linux-mac-ios/7 Note that the basic problem of Split DNS with Split Tunnel in IKEv2 is work-in-progress regarding RFC standards. https://tools.ietf.org/html/draft-ietf-ipsecme-split-dns-16
• B

  SG-2440 bricked from 2.4.4 update. reset button not working
  sg-2440 brick 2.4.4 reset • • bobkoure

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  That is correct.
• L

  IPSec connection established and trafic is outgoing, but no ongoing response
  • lmhaydii

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  @konstanti Thank you for your help, I will try from another server without NAT / BITANT and see if that will work
• M

  Proxy ARP and IPsec mobile
  • mcury

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• K

  IPsec VPN tunnel to a Fritzbox after update to 2.4.4-p1
  • kuschi

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  I had another opportunity to test the connections from the side of the Fritzbox and from the side of the pfsense box: pfsense box shows connection inactive, Fritzbox shows connection active: traffic direction from Fritzbox to pfsense works, e.g. ping / trace route. pfsense box changes status to connection active pfsense box shows connection inactive, Fritzbox shows connection active: traffic direction from pfsense box to Fritzbox does not work. Traffic times out, ping/ trace route shows no result
• T

  IPsec not connecting
  • toimagine

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  If you have the same subnet as the other side, both sides have to NAT to something else, else one side will think the other side is actually on its local subnet.
• K

  VPN between PfSense and Mikrotik IPsec no Phase2
  pfsense vpn ipsec mikrotik • • k15

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  @k15 Don't mention it Good luck
• A

  IPsec VPN established, but no traffic between computers
  vpn ipsec traffic issues no traffic ipsec rules • • apitsos

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  Hi, your machines uses s.o windows ? in that case turn off the firewall each and check pin to the other machine
• J

  PfSense IPsec Site to Site Issues
  • Joseph Watever J

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  @konstanti i have put the log in my topic
• D

  VPN issues from flapping secondary connection?
  • dlogan

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  N

  Ommit my ovpn reference, still, what do the ipsec logs say? timeout? remote disc? How is failover implemented
• F

  How to make Windows servers use pfSense VPN?
  • fbackes

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  I know! ;-) Since this is a productive system I can't easily mess with network settings. I have changed pfSense LAN address to 192.168.0.1 and the IP of a test server to 192.168.0.22. The subnet in Azure now is 10.10.0.0. The connection can be established, but machines in the different subnets still do not see each other. WAN, LAN, and IPsec firewall rules have all been set to allow full IP4 traffic. Can ping local machine from pfSense LAN and vice versa. Azure VPN shows some traffic in both directions (just a few bytes).
• M

  ipsec with pubkey ?
  • mrco

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  Probably one of these. https://www.netgate.com/docs/pfsense/book/ipsec/choosing-configuration-options.html#authentication-method What VPS service are you connecting to? Directly to the service to the VPS? What is it if so? STeve
• Z

  Windows 10 VPN Client / pfSense IPsec with EAP-RADIUS
  • zachelks

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  EAP-RADIUS is just EAP-MSCHAPv2 with RADIUS on the backend. If it doesn't work, the most likely problem is that our NPS config is not setup to allow EAP properly. See https://www.netgate.com/docs/pfsense/book/thirdparty/radius-authentication-with-windows-server.html#adding-a-network-policy for something to check against
• M

  Valid configuration for IKEv2 VPN for iOS and OSX
  • matp

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  @imushroom Hope this helps you https://grokdesigns.com/pfsense-ikev2-for-ios-macos-1/ All well-written Part three - how to use Apple Configurator
• M

  Able to connect to IKEv2 IPSec from Windows but not from Android - Going insane, what am I doing wrong?
  • matt4542

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  @matt4542 Hey https://www.netgate.com/docs/pfsense/book/ipsec/mobile-ipsec.html https://wiki.strongswan.org/projects/strongswan/wiki/AndroidVPNClient Show Phase 1 IPSEC PFSense settings And Strongswan Android settings Pay attention to the selected text You don't have that in your logs. Dec 25 09:06:44 00[DMN] +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Dec 25 09:06:44 00[DMN] Starting IKE service (strongSwan 5.7.1, Android 8.0.0 - ANE-LX1 8.0.0.162(C432)/2018-10-01, ANE-LX1 - HUAWEI/ANE-LX1/HUAWEI, Linux 4.4.23+, aarch64) Dec 25 09:06:44 00[LIB] loaded plugins: androidbridge charon android-log openssl fips-prf random nonce pubkey chapoly curve25519 pkcs1 pkcs8 pem xcbc hmac socket-default revocation eap-identity eap-mschapv2 eap-md5 eap-gtc eap-tls x509 Dec 25 09:06:44 00[JOB] spawning 16 worker threads Dec 25 09:06:44 04[CFG] loaded user certificate 'C=ES, O=XXX, CN=sony_xperia.XXXXX' and private key Dec 25 09:06:45 04[IKE] initiating IKE_SA android[1] to 94.177.XXX.XXX Dec 25 09:06:45 04[ENC] generating IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(REDIR_SUP) ] Dec 25 09:06:45 04[NET] sending packet: from 192.168.1.42[42086] to XXXX.XXXX[500] (716 bytes) Dec 25 09:06:45 09[NET] received packet: from 94.177.XXX.XXX[500] to 192.168.1.42[42086] (38 bytes) Dec 25 09:06:45 09[ENC] parsed IKE_SA_INIT response 0 [ N(INVAL_KE) ] Dec 25 09:06:45 09[IKE] peer didn't accept DH group ECP_256, it requested MODP_2048 Dec 25 09:06:45 09[IKE] initiating IKE_SA android[1] to 94.177.XXXX Dec 25 09:06:45 09[ENC] generating IKE_SA_INIT request 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) N(FRAG_SUP) N(HASH_ALG) N(REDIR_SUP) ] Dec 25 09:06:45 09[NET] sending packet: from 192.168.1.42[42086] to 94.177.XXX[500] (908 bytes) Dec 25 09:06:45 10[NET] received packet: from 94.177.XXX[500] to 192.168.1.42[42086] (489 bytes) Dec 25 09:06:45 10[ENC] parsed IKE_SA_INIT response 0 [ SA KE No N(NATD_S_IP) N(NATD_D_IP) CERTREQ N(FRAG_SUP) N(HASH_ALG) N(MULT_AUTH) ] Dec 25 09:06:45 10[CFG] selected proposal: IKE:AES_CBC_256/HMAC_SHA2_256_128/PRF_HMAC_SHA2_256/MODP_2048 Dec 25 09:06:45 10[IKE] local host is behind NAT, sending keep alives Dec 25 09:06:45 10[IKE] received cert request for "C=ES, O=XXX, CN=XXX" Dec 25 09:06:45 10[IKE] sending cert request for "C=ES, O=XXX, CN=XXXX" Dec 25 09:06:45 10[IKE] establishing CHILD_SA android{1}
• R

  IPsec VTI and default route
  • rcfa

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  If one side supports routed IPsec and the other side only supports tunneled IPsec, then it can still work provided that you only attempt to send traffic that matches the P2 entries on the remote end. Anything else would fail.
• T

  IPSEC Tunnel
  • tresrob

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  @tresrob Hey Sorry for my English can you ping 192.168.0.1 from 192.168.50.0/24 ? And show the rules on lan of the pfsense b And rules on the opt1 pfsense A
• A

  IPsec configuration files lost after reboot.
  • artemis

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  @artemis At the time , too, wanted to go to study at Cisco engineer, but could not . Glad to have helped ))))) good Luck
• 

  Ipsec Load Balance Multisite?
  • periko

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  Excellent news, always learn, I will check that once, thanks Derelict.
• 

  Can pfSense tunnel as IKEv2 client?
  • umademelosemyusernamepfsense

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  It depends on the context. pfSense can act as a "client" for site-to-site style connections using certificate-based auth, but it is not made to support a "mobile" or remote access style client setup where the server side sends configuration data such as the interface address to use.
• L

  How can I configure different encryption domain ? [SOLVED]
  • luizmeirelesx

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  I fixed it.. I put on IPSEC PHASE 2 > NAT BINAT IP 192.168.0.x/32 and LOCAL NETWORK 10.0.0.0/24 and REMOTE NETWORK 192.168.1.0/24 and then I made NAT 1:1 > 10.0.0.x > INTERNAL IP > 192.168.0.1 and made the rules on INTERFACES IPSEC and LAN. thank you.
• C

  Pfsense IPsec keepalive
  • ctisdall

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  It means that you cannot initiate pings from a source address that is not on the firewall itself. For instance, if you have a Phase 2 tunnel between a local network that is behind another router on your side and a network on the remote side, the firewall itself cannot generate an interesting ping to bring up a tunnel because it cannot ping sourced from an address that is not on the firewall. In that case you would have to generate a keepalive ping from the network interesting to IPsec.
• V

  pfSense creating multiple P2 (child SA) entries
  • vijay0070

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  They are rekeyed tunnels. They are harmless. They are kept around in case the other side sends traffic for the old SA, which sometimes happens with some IPsec implementations. They are visible there for the time between the rekey and the full lifetime expiration. Are you experiencing actual traffic flow issues or do you just not like to see them listed?
• M

  IPsec Mobile VPN - Allow client to access LAN without "Send all trafic" / Remote gateway disabled
  • MD

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• T

  IPsec with IPcomp - pfsense 2.4.4-RELEASE-p1
  • TugBoat

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  Thanks for that info. At least my memory about the fact that there was a problem is correct! I guess the only other comment is that, as noted by others in the ticket, the compression option is far from "little used'. Thanks again.