[Swan] disconnect after 3600s
António Silva
asilva at wirelessmundi.com
Fri Jan 22 12:06:14 UTC 2021
I just change my configuration adding “rekey=yes”, waiting for the next hour do check the results.
--
Saludos / Regards / Cumprimentos
António Silva
> On 22 Jan 2021, at 12:02, António Silva <asilva at wirelessmundi.com> wrote:
>
> Hi,
>
> I’m having the same issue, after upgrading the server side to version 4.1, every hour the tunnel disconnects, restarting the client side only makes it work again.
>
>
> Here is the logs from the server side when the tunnel is reconnecting after an 1h:
>
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: initiating IKEv1 Main Mode connection to replace #89
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: sent Main Mode request, replacing #89
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: responding to Main Mode from unknown peer 95.61.168.133:500
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: sent Main Mode R1
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: sent Main Mode R2
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133: queuing pending IPsec SA negotiating with 95.61.168.133 IKE SA #93 "tunnel8"[10] 95.61.168.133
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: Peer ID is ID_IPV4_ADDR: '192.168.1.2'
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: IKE SA established {auth=PRESHARED_KEY cipher=AES_CBC_256 integ=HMAC_SHA2_256 group=MODP2048}
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: XAUTH: Sending Username/Password request (MAIN_R3->XAUTH_R0)
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: XAUTH: password file authentication method requested to authenticate user 'asilvapt at remote.local <mailto:asilvapt at remote.local>'
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: XAUTH: password file (/etc/ipsec.d/passwd) open.
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: XAUTH: success user(asilvapt at remote.local <mailto:asilvapt at remote.local>:(null))
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: XAUTH: User asilvapt at remote.local <mailto:asilvapt at remote.local>: Authentication Successful
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: XAUTH: xauth_inR1(STF_OK)
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: IKE SA established {auth=PRESHARED_KEY cipher=AES_CBC_256 integ=HMAC_SHA2_256 group=MODP2048}
> Jan 22 12:37:36 sol pluto[24350]: | pool 192.168.20.2-192.168.20.2: growing address pool from 0 to 1
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: modecfg_inR0(STF_OK)
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #94: sent ModeCfg reply, expecting Ack {auth=PRESHARED_KEY cipher=AES_CBC_256 integ=HMAC_SHA2_256 group=MODP2048}
> Jan 22 12:37:36 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: STATE_MAIN_I1: retransmission; will wait 0.5 seconds for response
> Jan 22 12:37:37 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: sent Main Mode I2
> Jan 22 12:37:37 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: sent Main Mode I3
> Jan 22 12:37:37 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: Peer ID is ID_IPV4_ADDR: '192.168.1.2'
> Jan 22 12:37:37 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: IKE SA established {auth=PRESHARED_KEY cipher=AES_CBC_256 integ=HMAC_SHA2_256 group=MODP2048}
> Jan 22 12:37:37 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: XAUTH: Sending Username/Password request (MAIN_I4->XAUTH_R0)
> Jan 22 12:37:37 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: ignoring informational payload CERTIFICATE_UNAVAILABLE, msgid=00000000, length=12
> Jan 22 12:37:37 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: received and ignored notification payload: CERTIFICATE_UNAVAILABLE
> Jan 22 12:42:06 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #89: deleting state (STATE_MODE_CFG_R1) aged 3600.266987s and sending notification
> Jan 22 12:42:06 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #90: deleting state (STATE_QUICK_R2) aged 3600.089852s and sending notification
> Jan 22 12:42:06 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #90: ESP traffic information: in=11MB out=30MB XAUTHuser=asilvapt at remote.local <mailto:XAUTHuser=asilvapt at remote.local>
> Jan 22 12:42:06 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #90: Warning: XAUTH username changed from '' to 'asilvaptremote.local'
> Jan 22 12:42:06 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: ignoring Delete SA payload: PROTO_IPSEC_ESP SA(0x3e9fbbf6) not found (maybe expired)
> Jan 22 12:42:06 sol pluto[24350]: ignoring found existing connection instance "tunnel8"[10] 95.61.168.133 that covers kernel acquire with IKE state #93 and IPsec state #0 - due to duplicate acquire?
> Jan 22 12:42:36 sol pluto[24350]: existing bare shunt found - refusing to add a duplicate
> Jan 22 12:42:36 sol pluto[24350]: ignoring found existing connection instance "tunnel8"[10] 95.61.168.133 that covers kernel acquire with IKE state #93 and IPsec state #0 - due to duplicate acquire?
> Jan 22 12:42:36 sol pluto[24350]: existing bare shunt found - refusing to add a duplicate
> Jan 22 12:42:36 sol pluto[24350]: ignoring found existing connection instance "tunnel8"[10] 95.61.168.133 that covers kernel acquire with IKE state #93 and IPsec state #0 - due to duplicate acquire?
> Jan 22 12:43:06 sol pluto[24350]: existing bare shunt found - refusing to add a duplicate
> Jan 22 12:43:06 sol pluto[24350]: ignoring found existing connection instance "tunnel8"[10] 95.61.168.133 that covers kernel acquire with IKE state #93 and IPsec state #0 - due to duplicate acquire?
> Jan 22 12:43:36 sol pluto[24350]: existing bare shunt found - refusing to add a duplicate
> Jan 22 12:43:36 sol pluto[24350]: ignoring found existing connection instance "tunnel8"[10] 95.61.168.133 that covers kernel acquire with IKE state #93 and IPsec state #0 - due to duplicate acquire?
> Jan 22 12:44:06 sol pluto[24350]: existing bare shunt found - refusing to add a duplicate
> Jan 22 12:44:06 sol pluto[24350]: ignoring found existing connection instance "tunnel8"[10] 95.61.168.133 that covers kernel acquire with IKE state #93 and IPsec state #0 - due to duplicate acquire?
> Jan 22 12:44:37 sol pluto[24350]: existing bare shunt found - refusing to add a duplicate
> Jan 22 12:44:37 sol pluto[24350]: ignoring found existing connection instance "tunnel8"[10] 95.61.168.133 that covers kernel acquire with IKE state #93 and IPsec state #0 - due to duplicate acquire?
> Jan 22 12:45:07 sol pluto[24350]: existing bare shunt found - refusing to add a duplicate
> Jan 22 12:45:07 sol pluto[24350]: ignoring found existing connection instance "tunnel8"[10] 95.61.168.133 that covers kernel acquire with IKE state #93 and IPsec state #0 - due to duplicate acquire?
> Jan 22 12:45:12 sol pluto[24350]: "tunnel8"[10] 95.61.168.133 #93: received Delete SA payload: self-deleting ISAKMP State #93
>
>
>
>
> My configuration:
> conn tunnel8-aggr
> aggrmode=yes
> also=tunnel8
>
> conn tunnel8
> pfs=no
> type=tunnel
> auto=add
> ikev2=no
> phase2=esp
> authby=secret
> keyingtries=3
> ikelifetime=24h
> salifetime=1h
> left=92.211.123.17
> leftsubnet=0.0.0.0/0
> leftid=@xauth.remote.local <mailto:leftid=@xauth.remote.local>
> right=%any
> rightid=%any
> rightaddresspool=192.168.20.100-192.168.20.254
> dpddelay=30
> dpdtimeout=300
> dpdaction=clear
> leftxauthserver=yes
> rightxauthclient=yes
> leftmodecfgserver=yes
> rightmodecfgclient=yes
> modecfgpull=yes
> fragmentation=yes
> xauthby=file
>
>
>
>
>
>
> --
> Saludos / Regards / Cumprimentos
> António Silva
>
>
>
>
>> On 21 Jan 2021, at 20:01, Michael Schwartzkopff <ms at sys4.de <mailto:ms at sys4.de>> wrote:
>>
>> On 21.01.21 20:53, Kontakt wrote:
>>> Hello,
>>> I have a problem. ipsec tunnel compiled on libreswan 4.1 (centos 8) for 1
>>> client causes it to disconnect after 3600s. the same configuration on
>>> libreswan 3.23 (centos 7) does not cause such problems. conf file,
>>> password, iptables, entries in routing table identical.
>>> I checked sysctl - identical. the only difference is selinux (centos 7 has
>>> enforce, centos 8 disabled).
>>>
>>> libreswan 3.23 (centos 7):
>>>
>>> *ipsec verify*Verifying installed system and configuration files
>>>
>>> Version check and ipsec on-path [OK]
>>> Libreswan 3.23 (netkey) on 3.10.0-862.3.2.el7.x86_64
>>> Checking for IPsec support in kernel [OK]
>>> NETKEY: Testing XFRM related proc values
>>> ICMP default / send_redirects [NOT DISABLED]
>>>
>>> Disable / proc / sys / net / ipv4 / conf / * / send_redirects or NETKEY
>>> will act on or cause sending of bogus ICMP redirects!
>>>
>>> ICMP default / accept_redirects [OK]
>>> XFRM larval drop [OK]
>>> Pluto ipsec.conf syntax [OK]
>>> Two or more interfaces found, checking IP forwarding [OK]
>>> Checking rp_filter [ENABLED]
>>> / proc / sys / net / ipv4 / conf / all / rp_filter [ENABLED]
>>> / proc / sys / net / ipv4 / conf / default / rp_filter [ENABLED]
>>> / proc / sys / net / ipv4 / conf / em1 / rp_filter [ENABLED]
>>> / proc / sys / net / ipv4 / conf / em2 / rp_filter [ENABLED]
>>> / proc / sys / net / ipv4 / conf / ip_vti0 / rp_filter [ENABLED]
>>> rp_filter is not fully aware of IPsec and should be disabled
>>> Checking that pluto is running [OK]
>>> Pluto listening for IKE on udp 500 [OK]
>>> Pluto listening for IKE / NAT-T on udp 4500 [OK]
>>> Pluto ipsec.secret syntax [OK]
>>> Checking 'ip' command [OK]
>>> Checking 'iptables' command [OK]
>>> Checking 'prelink' command does not interfere with FIPS [OK]
>>> Checking for obsolete ipsec.conf options [OK]
>>>
>>> ipsec verify: encountered 12 errors - see 'man ipsec_verify' for help
>>>
>>> *And for libreswan 4.1 (centos 8):*
>>> * ipsec verify*
>>>
>>> Verifying installed system and configuration files
>>>
>>> Version check and ipsec on-path [OK]
>>> Libreswan 4.1 (netkey) on 4.18.0-193.28.1.el8_2.x86_64
>>> Checking for IPsec support in kernel [OK]
>>> NETKEY: Testing XFRM related proc values
>>> ICMP default / send_redirects [OK]
>>> ICMP default / accept_redirects [OK]
>>> XFRM larval drop [OK]
>>> Pluto ipsec.conf syntax [OK]
>>> Checking rp_filter [OK]
>>> Checking that pluto is running [OK]
>>> Pluto listening for IKE on udp 500 [OK]
>>> Pluto listening for IKE / NAT-T on udp 4500 [OK]
>>> Pluto ipsec.secret syntax [OK]
>>> Checking 'ip' command [OK]
>>> Checking 'iptables' command [OK]
>>> Checking 'prelink' command does not interfere with FIPS [OK]
>>> Checking for obsolete ipsec.conf options [OK]
>>>
>>> Where to look for the problem?
>>>
>>>
>>>
>>> _______________________________________________
>>> Swan mailing list
>>> Swan at lists.libreswan.org <mailto:Swan at lists.libreswan.org>
>>> https://lists.libreswan.org/mailman/listinfo/swan <https://lists.libreswan.org/mailman/listinfo/swan>
>>
>>
>> Logs? of both sides?
>>
>> Seems the child negotiation somehow fails. But the reason should be in the logs.
>>
>>
>>
>> Mit freundlichen Grüßen,
>>
>> --
>>
>> [*] sys4 AG
>>
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>>
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>> https://lists.libreswan.org/mailman/listinfo/swan
>
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