[squid-users] squid intercept config
Yuri Voinov
yvoinov at gmail.com
Thu Mar 5 18:02:42 UTC 2015
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Sorry, I'm wrong. Netstat on host can't show redirected listeners.
Need to check it externally.
05.03.15 23:59, Monah Baki пишет:
> On 10.0.0.24
>
> root at ISN-PHC-CACHE:/home/support # netstat -an Active Internet
> connections (including servers) Proto Recv-Q Send-Q Local Address
> Foreign Address (state) tcp4 0 52 10.0.0.24.22
> 96.255.8.226.50911 ESTABLISHED tcp4 0 0 *.3129
> *.* LISTEN tcp4 0 0 *.3128
> *.* LISTEN tcp4 0 0 *.81
> *.* LISTEN tcp6 0 0 *.81
> *.* LISTEN tcp4 0 0 *.22
> *.* LISTEN tcp6 0 0 *.22
> *.* LISTEN tcp6 0 0 ::1.562
> ::1.40066 ESTABLISHED tcp6 0 0 ::1.40066
> ::1.562 ESTABLISHED tcp6 0 0 *.561 *.*
> LISTEN tcp6 0 0 *.562 *.*
> LISTEN tcp4 0 0 *.199 *.*
> LISTEN tcp4 0 0 *.10000 *.*
> LISTEN udp4 0 0 *.3401 *.* udp4 0
> 0 *.34985 *.* udp4 0 0 *.*
> *.* udp4 0 0 *.161 *.* udp4 0
> 0 *.162 *.* udp4 0 0 *.10000
> *.* udp4 0 0 127.0.0.1.123 *.* udp6 0
> 0 fe80::1%lo0.123 *.* udp6 0 0 ::1.123
> *.* udp4 0 0 10.0.0.24.123 *.* udp6 0
> 0 *.123 *.* udp4 0 0 *.123
> *.* udp4 0 0 *.514 *.* udp6 0
> 0 *.514 *.*
>
>
>
> On Thu, Mar 5, 2015 at 12:12 PM, Yuri Voinov <yvoinov at gmail.com>
> wrote:
>
> - From your PC run telnet 10.0.0.24 80. You've seen if TCP socket
> opens.
>
> 05.03.15 23:10, Monah Baki пишет:
>>>> How can I confirm, I have access only to the BSD box
>>>>
>>>> Thanks
>>>>
>>>> On Thu, Mar 5, 2015 at 11:12 AM, Yuri Voinov
>>>> <yvoinov at gmail.com> wrote:
>>>>
>>>> Does 80 port outside BSD-box listens?
>>>>
>>>> 05.03.15 21:25, Monah Baki пишет:
>>>>>>> root at ISN-PHC-CACHE:/cache/squid/bin # tcpdump -n -e
>>>>>>> -ttt -i pflog0 tcpdump: WARNING: pflog0: no IPv4
>>>>>>> address assigned tcpdump: verbose output suppressed,
>>>>>>> use -v or -vv for full protocol decode listening on
>>>>>>> pflog0, link-type PFLOG (OpenBSD pflog file), capture
>>>>>>> size 65535 bytes capability mode sandbox enabled
>>>>>>> 00:00:00.000000 rule 0..16777216/0(match): pass in on
>>>>>>> bge0: 10.0.0.106.5678
>>>>>>>> 255.255.255.255.5678: UDP, length 88
>>>>>>> 00:00:08.342860 rule 0..16777216/0(match): pass in on
>>>>>>> bge0: 10.0.0.14.54264
>>>>>>>> 10.0.0.24.22: Flags [S], seq 3823043622, win 8192,
>>>>>>>> options [mss
>>>>>>> 1460,nop,wscale 2,nop,nop,sackOK], length 0
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Thu, Mar 5, 2015 at 10:20 AM, Yuri Voinov
>>>>>>> <yvoinov at gmail.com> wrote:
>>>>>>>
>>>>>>> Hm. No.
>>>>>>>
>>>>>>> We not checked only OS.
>>>>>>>
>>>>>>> Does your BSD really loads PF module?
>>>>>>>
>>>>>>> 05.03.15 21:16, Monah Baki пишет:
>>>>>>>>>> Not sure why the client is running old hard/soft
>>>>>>>>>> ware, could it be cause of the hardware? Is
>>>>>>>>>> FreeBSD an issue, should I switch to linux?
>>>>>>>>>>
>>>>>>>>>> On Thu, Mar 5, 2015 at 10:14 AM, Yuri Voinov
>>>>>>>>>> <yvoinov at gmail.com> wrote:
>>>>>>>>>>
>>>>>>>>>> Wow, 7600!
>>>>>>>>>>
>>>>>>>>>> But why is so antique iOS?! Current is 15.4
>>>>>>>>>>
>>>>>>>>>> 05.03.15 21:09, Monah Baki пишет:
>>>>>>>>>>>>> PORT STATE SERVICE VERSION 23/tcp open
>>>>>>>>>>>>> telnet Cisco IOS telnetd MAC Address:
>>>>>>>>>>>>> 88:5A:92:63:77:81 (Cisco) Device type:
>>>>>>>>>>>>> router Running: Cisco IOS 12.X OS CPE:
>>>>>>>>>>>>> cpe:/h:cisco:7600_router
>>>>>>>>>>>>> cpe:/o:cisco:ios:12.2 OS details: Cisco
>>>>>>>>>>>>> 7600 router (IOS 12.2) Network Distance: 1
>>>>>>>>>>>>> hop TCP Sequence Prediction: Difficulty=258
>>>>>>>>>>>>> (Good luck!) IP ID Sequence Generation:
>>>>>>>>>>>>> Randomized Service Info: OS: IOS; Device:
>>>>>>>>>>>>> switch; CPE: cpe:/o:cisco:ios
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> On Thu, Mar 5, 2015 at 9:31 AM, Yuri
>>>>>>>>>>>>> Voinov <yvoinov at gmail.com> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>> What is Cisco model and iOS version?
>>>>>>>>>>>>>
>>>>>>>>>>>>> 05.03.15 20:25, Monah Baki пишет:
>>>>>>>>>>>>>>>> Yes, correct
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> On Thu, Mar 5, 2015 at 9:23 AM, Yuri
>>>>>>>>>>>>>>>> Voinov <yvoinov at gmail.com> wrote:
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> 10.0.0.23 is your host? And 10.0.0.24
>>>>>>>>>>>>>>>> is proxy box?
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>> 05.03.15 20:15, Monah Baki пишет:
>>>>>>>>>>>>>>>>>>> '--prefix=/cache/squid'
>>>>>>>>>>>>>>>>>>> '--enable-follow-x-forwarded-for'
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
'--with-large-files' '--enable-ssl'
>>>>>>>>>>>>>>>>>>> '--disable-ipv6'
>>>>>>>>>>>>>>>>>>> '--enable-esi'
>>>>>>>>>>>>>>>>>>> '--enable-kill-parent-hack'
>>>>>>>>>>>>>>>>>>> '--enable-snmp'
>>>>>>>>>>>>>>>>>>> '--with-pthreads'
>>>>>>>>>>>>>>>>>>> '--with-filedescriptors=65535'
>>>>>>>>>>>>>>>>>>> '--enable-cachemgr-hostname=hostname'
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>
>>>>>>>>>>>>>>>>>>>
'--enable-storeio=ufs,aufs,diskd,rock'
>>>>>>>>>>>>>>>>>>> '--enable-ipfw-transparent'
>>>>>>>>>>>>>>>>>>> '--enable-pf-transparent'
>>>>>>>>>>>>>>>>>>> '--with-nat-devpf'
>>>>>>>>>>>>>>>>>>> --enable-ltdl-convenience
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> On Thu, Mar 5, 2015 at 9:14 AM,
>>>>>>>>>>>>>>>>>>> Yuri Voinov <yvoinov at gmail.com>
>>>>>>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> This looking good too.
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> Stupid question:
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> With witch interception option
>>>>>>>>>>>>>>>>>>> squid builed?
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> I.e, squid -v?
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>> 05.03.15 18:19, Monah Baki
>>>>>>>>>>>>>>>>>>> пишет:
>>>>>>>>>>>>>>>>>>>>>> Hi all, can anyone verify
>>>>>>>>>>>>>>>>>>>>>> if this is correct, need
>>>>>>>>>>>>>>>>>>>>>> to make ure that users
>>>>>>>>>>>>>>>>>>>>>> will be able to access
>>>>>>>>>>>>>>>>>>>>>> the internet via the
>>>>>>>>>>>>>>>>>>>>>> squid.
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> Running FreeBSD with a
>>>>>>>>>>>>>>>>>>>>>> single interface with
>>>>>>>>>>>>>>>>>>>>>> Squid-3.5.2
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> Policy based routing on
>>>>>>>>>>>>>>>>>>>>>> Cisco with the
>>>>>>>>>>>>>>>>>>>>>> following:
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> interface
>>>>>>>>>>>>>>>>>>>>>> GigabitEthernet0/0/1.1
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> encapsulation dot1Q 1
>>>>>>>>>>>>>>>>>>>>>> native
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> ip address 10.0.0.9
>>>>>>>>>>>>>>>>>>>>>> 255.255.255.0
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> no ip redirects
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> no ip unreachables
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> ip nat inside
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> standby 1 ip 10.0.0.10
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> standby 1 priority 120
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> standby 1 preempt
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> standby 1 name HSRP
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> ip policy route-map
>>>>>>>>>>>>>>>>>>>>>> CFLOW
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> ip access-list extended
>>>>>>>>>>>>>>>>>>>>>> REDIRECT
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> deny tcp host 10.0.0.24
>>>>>>>>>>>>>>>>>>>>>> any eq www
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> permit tcp host 10.0.0.23
>>>>>>>>>>>>>>>>>>>>>> any eq www
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> route-map CFLOW permit
>>>>>>>>>>>>>>>>>>>>>> 10
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> match ip address REDIRECT
>>>>>>>>>>>>>>>>>>>>>> set ip next-hop
>>>>>>>>>>>>>>>>>>>>>> 10.0.0.24
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> In my /etc/pf.conf rdr
>>>>>>>>>>>>>>>>>>>>>> pass inet proto tcp from
>>>>>>>>>>>>>>>>>>>>>> 10.0.0.0/8 to any port 80
>>>>>>>>>>>>>>>>>>>>>> -> 10.0.0.24 port 3129
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> # block in pass in log
>>>>>>>>>>>>>>>>>>>>>> quick on bge0 pass out
>>>>>>>>>>>>>>>>>>>>>> log quick on bge0 pass
>>>>>>>>>>>>>>>>>>>>>> out keep state
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> and finally in my
>>>>>>>>>>>>>>>>>>>>>> squid.conf: http_port
>>>>>>>>>>>>>>>>>>>>>> 3128 http_port 3129
>>>>>>>>>>>>>>>>>>>>>> intercept
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> And for testing purposes
>>>>>>>>>>>>>>>>>>>>>> from the squid server:
>>>>>>>>>>>>>>>>>>>>>> ./squidclient -h
>>>>>>>>>>>>>>>>>>>>>> 10.0.0.24 -p 3128
>>>>>>>>>>>>>>>>>>>>>> http://www.freebsd.org/
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> If I replace -p 3128 with
>>>>>>>>>>>>>>>>>>>>>> -p 80, I get a access
>>>>>>>>>>>>>>>>>>>>>> denied, and if I omit the
>>>>>>>>>>>>>>>>>>>>>> -p 3128 completely, I can
>>>>>>>>>>>>>>>>>>>>>> access the websites.
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> tcpdump with (-p 3128)
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> 13:15:02.681106 IP
>>>>>>>>>>>>>>>>>>>>>> ISN-PHC-CACHE.44017 >
>>>>>>>>>>>>>>>>>>>>>> wfe0.ysv.freebsd.org.http:
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
Flags [.], ack 17377, win 1018,
>>>>>>>>>>>>>>>>>>>>>> options [nop,nop,TS val
>>>>>>>>>>>>>>>>>>>>>> 985588797 ecr
>>>>>>>>>>>>>>>>>>>>>> 1054387720], length 0
>>>>>>>>>>>>>>>>>>>>>> 13:15:02.681421 IP
>>>>>>>>>>>>>>>>>>>>>> wfe0.ysv.freebsd.org.http
>>>>>>>>>>>>>>>>>>>>>> > ISN-PHC-CACHE.44017:
>>>>>>>>>>>>>>>>>>>>>> Flags [.], seq
>>>>>>>>>>>>>>>>>>>>>> 17377:18825, ack 289,
>>>>>>>>>>>>>>>>>>>>>> win 1040, options
>>>>>>>>>>>>>>>>>>>>>> [nop,nop,TS val
>>>>>>>>>>>>>>>>>>>>>> 1054387720 ecr
>>>>>>>>>>>>>>>>>>>>>> 985588501], length 1448
>>>>>>>>>>>>>>>>>>>>>> 13:15:02.681575 IP
>>>>>>>>>>>>>>>>>>>>>> wfe0.ysv.freebsd.org.http
>>>>>>>>>>>>>>>>>>>>>> > ISN-PHC-CACHE.44017:
>>>>>>>>>>>>>>>>>>>>>> Flags [.], seq
>>>>>>>>>>>>>>>>>>>>>> 18825:20273, ack 289,
>>>>>>>>>>>>>>>>>>>>>> win 1040, options
>>>>>>>>>>>>>>>>>>>>>> [nop,nop,TS val
>>>>>>>>>>>>>>>>>>>>>> 1054387720 ecr
>>>>>>>>>>>>>>>>>>>>>> 985588501], length 1448
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> Did I miss anything?
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> Thanks Monah
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>> _______________________________________________
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>
>>>>>>>>>>>>>>>>>>>>>>
>
>>>>>>>>>>>>>>>>>>>>>>
squid-users mailing list
>>>>>>>>>>>>>>>>>>>>>> squid-users at lists.squid-cache.org
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>
>>>>>>>>>>>>>>>>>>>>>>
http://lists.squid-cache.org/listinfo/squid-users
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>>>>>
>>>>>>>>>>>>>>>>>>>>>>
>>>> _______________________________________________
>>>>>>>>>>>>>>>>>>>> squid-users mailing list
>>>>>>>>>>>>>>>>>>>> squid-users at lists.squid-cache.org
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>>
http://lists.squid-cache.org/listinfo/squid-users
>>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>
>>>>>>>
>>>>>
>>>>
>>
>
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