[squid-users] Squid Cache Issues migration from 5.8 to 6.6

Alex Rousskov rousskov at measurement-factory.com
Fri Jul 5 13:00:26 UTC 2024 

On 2024-07-04 18:12, Jonathan Lee wrote:
> I know before I could use
> 
> tls_outgoing_options cipher=EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH+aRSA+RC4:EECDH:EDH+aRSA:HIGH:!RC4:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS
> 
> 
> However with the update I am seeing
> 
> ERROR: Unsupported TLS option SINGLE_ECDH_USE

FWIW, I can only (try to) help with one problem at this time. If you 
really want to attack two problems concurrently, I recommend starting 
another/new thread dedicated to the above problem. Others may be able to 
help you on that other thread.

Alex.

> I found researching in lists-squid-cache.org 
> <http://lists-squid-cache.org> that someone solved this with appending 
> TLS13-AES-256-CGM-SHA384 to the ciphers.
> 
> I am thinking this is my issue also.
> 
> I see that error over and over when I run "squid -k parse”
> 
> Do I append this to the options cipher list?
> 
> Jonathan Lee
> 
>> On Jul 4, 2024, at 14:45, Alex Rousskov 
>> <rousskov at measurement-factory.com> wrote:
>>
>> On 2024-07-04 15:37, Jonathan Lee wrote:
>>
>>> in Squid.conf I have nothing with that detective.
>>
>> Sounds good; sslproxy_cert_sign default should work OK in most cases. 
>> I mentioned signUntrusted algorithm so that you can discover (from the 
>> corresponding sslproxy_cert_sign documentation) which CA/certificate 
>> Squid uses in which SslBump use case. Triage is often easier if folks 
>> share the same working theory, and my current working theory suggests 
>> that we are looking at a (default) signUntrusted use case.
>>
>> The solution here probably does _not_ involve changing 
>> sslproxy_cert_sign configuration, but, to make progress, I need more 
>> info to confirm this working theory and describe next steps.
>>
>>
>>> Yes I am using SSL bump with this configuration..
>>
>> Noted, thank you.
>>
>>
>>> So would I use this directive
>>
>> I do not recommend changing your configuration at this time. I 
>> recommend rereading my earlier recommendation and following that 
>> instead: "As the next step in triage, I recommend determining what 
>> that CA is in these cases (e.g., by capturing raw TLS packets and 
>> matching them with connection information from A000417 error messages 
>> in cache.log or %err_detail in access.log)."
>>
>>
>> HTH,
>>
>> Alex.
>>
>>
>>>> On Jul 4, 2024, at 09:56, Alex Rousskov wrote:
>>>>
>>>> On 2024-07-04 12:11, Jonathan Lee wrote:
>>>>> failure while accepting a TLS connection on conn5887 
>>>>> local=192.168.1.1:3128
>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417
>>>>
>>>> A000417 is an "unknown CA" alert sent by client to Squid while the 
>>>> client is trying to establish a TLS connection to/through Squid. The 
>>>> client does not trust the Certificate Authority that signed the 
>>>> certificate that was used for that TLS connection.
>>>>
>>>> As the next step in triage, I recommend determining what that CA is 
>>>> in these cases (e.g., by capturing raw TLS packets and matching them 
>>>> with connection information from A000417 error messages in cache.log 
>>>> or %err_detail in access.log).
>>>>
>>>> If you use SslBump for port 3128 traffic, then one of the 
>>>> possibilities here is that Squid is using an unknown-to-client CA to 
>>>> report an origin server that Squid itself does not trust (see 
>>>> signUntrusted in squid.conf.documented). In those cases, logging a 
>>>> level-1 ERROR is a Squid bug because that expected/desirable outcome 
>>>> should be treated as success (and a successful TLS accept treated as 
>>>> an error!).
>>>>
>>>>
>>>> HTH,
>>>>
>>>> Alex.
>>
>>
>>>>> Is my main concern however I use the squid guard URL blocker
>>>>> Sent from my iPhone
>>>>>> On Jul 4, 2024, at 07:41, Alex Rousskov 
>>>>>> <rousskov at measurement-factory.com> wrote:
>>>>>>
>>>>>> On 2024-07-03 13:56, Jonathan Lee wrote:
>>>>>>> Hello fellow Squid users does anyone know how to fix this issue?
>>>>>>
>>>>>> I counted about eight different "issues" in your cache.log sample. 
>>>>>> Most of them are probably independent. I recommend that you 
>>>>>> explicitly pick _one_, search mailing list archives for previous 
>>>>>> discussions about it, and then provide as many details about it as 
>>>>>> you can (e.g., what traffic causes it and/or matching access.log 
>>>>>> records).
>>>>>>
>>>>>>
>>>>>> HTH,
>>>>>>
>>>>>> Alex.
>>>>>>
>>>>>>
>>>>>>> Squid - Cache Logs
>>>>>>> Date-Time    Message
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:54:34    kick abandoning 
>>>>>>> conn7853 local=192.168.1.1:3128 remote=192.168.1.5:49710 FD 89 
>>>>>>> flags=1
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:54:29    kick abandoning 
>>>>>>> conn7844 local=192.168.1.1:3128 remote=192.168.1.5:49702 FD 81 
>>>>>>> flags=1
>>>>>>> 03.07.2024 10:54:09    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7648 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49672 FD 44 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:54:09    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7647 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49670 FD 43 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:54:09    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7646 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49668 FD 34 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:53:04    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7367 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49627 FD 22 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:52:47    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7345 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49618 FD 31 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:52:38    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7340 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49616 FD 45 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:52:34    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7316 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49609 FD 45 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:51:55    WARNING: Error Pages Missing Language: en-us
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:51:55    ERROR: loading file 
>>>>>>> 9;/usr/local/etc/squid/errors/en-us/ERR_ZERO_SIZE_OBJECT': (2) 
>>>>>>> No such file or directory
>>>>>>> 03.07.2024 10:51:44    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7102 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49574 FD 34 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:51:28    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn7071 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49568 FD 92 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:50:29    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn6944 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49534 FD 101 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:49:54    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn6866 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49519 FD 31 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:49:38    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn6809 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49503 FD 31 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:49:32    ERROR: system call failure while accepting 
>>>>>>> a TLS connection on conn6794 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49496 FD 19 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_IO_ERR=5+errno=54
>>>>>>> 03.07.2024 10:49:24    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn6776 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49481 FD 137 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:48:49    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn6440 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49424 FD 16 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:48:49    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn6445 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49426 FD 34 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:48:22    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn6035 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49355 FD 226 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:48:09    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn5887 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49318 FD 33 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:48:09    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn5875 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49312 FD 216 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:48:09    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn5876 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49314 FD 217 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:47:57    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn5815 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49297 FD 201 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:47:54    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn5760 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49289 FD 195 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:47:52    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn5717 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49284 FD 195 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:47:50    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn5552 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:49268 FD 142 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:47:34    kick abandoning 
>>>>>>> conn5254 local=192.168.1.1:3128 remote=192.168.1.5:49209 FD 100 
>>>>>>> flags=1
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:47:21    kick abandoning 
>>>>>>> conn5022 local=192.168.1.1:3128 remote=192.168.1.5:49167 FD 37 
>>>>>>> flags=1
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:47:21    kick abandoning 
>>>>>>> conn5020 local=192.168.1.1:3128 remote=192.168.1.5:49165 FD 36 
>>>>>>> flags=1
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:42:22    WARNING: Forwarding loop detected for:
>>>>>>> 03.07.2024 10:40:08    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn4955 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:52339 FD 98 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 03.07.2024 10:39:52    kick abandoning 
>>>>>>> conn4927 local=192.168.1.1:3128 remote=192.168.1.5:52331 FD 105 
>>>>>>> flags=1
>>>>>>> 03.07.2024 10:39:09    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn4846 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:52314 FD 19 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:38:14    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn4650 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:52274 FD 35 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000418+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:38:08    ERROR: failure while accepting a TLS 
>>>>>>> connection on conn4645 local=192.168.1.1:3128 
>>>>>>> remote=192.168.1.5:52272 FD 35 flags=1: 
>>>>>>> SQUID_TLS_ERR_ACCEPT+TLS_LIB_ERR=A000417+TLS_IO_ERR=1
>>>>>>> 03.07.2024 10:38:04    ERROR: Unsupported TLS option SINGLE_ECDH_USE
>>>>>>> 03.07.2024 10:38:04    ERROR: Unsupported TLS option SINGLE_DH_USE
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> 31.12.1969 16:00:00
>>>>>>> _______________________________________________
>>>>>>> squid-users mailing list
>>>>>>> squid-users at lists.squid-cache.org
>>>>>>> https://lists.squid-cache.org/listinfo/squid-users
>>>>>>
>>>>
>>
>

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