Hey MK, Can you send me the Mikrotik Supout.rif so I would be able to understand a bit more the Mikrotik level of things? Also I will need the output of iptables-save instead of the rules you have sent. You should also change the source of the REDIRECT rule only to the relevant clients and not anywhere since it will probably create a loop. Eliezer ---- Eliezer Croitoru NgTech, Tech Support Mobile: +972-5-28704261 Email: ngtech1ltd@xxxxxxxxx Web: https://ngtech.co.il/ My-Tube: https://tube.ngtech.co.il/ -----Original Message----- From: M K <mohammed.khallaf@xxxxxxxxx> Sent: Monday, 29 August 2022 18:36 To: ngtech1ltd@xxxxxxxxx Cc: squid-users@xxxxxxxxxxxxxxxxxxxxx; Rafael Akchurin <rafael.akchurin@xxxxxxxxxxxx> Subject: Re: Squid 4.8+ intercept iptables PREROUTING: Chain PREROUTING (policy ACCEPT) target prot opt source destination ACCEPT all -- anywhere anywhere ADDRTYPE match dst-type LOCAL REDIRECT tcp -- anywhere anywhere tcp dpt:http redir ports 3130 REDIRECT tcp -- anywhere anywhere tcp dpt:https redir ports 3130 ------------------------- Mikrotik mangle: add action=route chain=prerouting dst-port=80 passthrough=no protocol=tcp route-dst={squid} src-address={client} add action=route chain=prerouting connection-state="" dst-port=443 passthrough=no protocol=tcp route-dst={squid} src-address={client} ------------------------- full squid.conf: acl client src x.x.x.x/x http_access allow client http_access deny all http_port 3128 https_port 3130 intercept ssl-bump cert=/xxx/xxx/xxx.pem generate-host-certificates=on dynamic_cert_mem_cache_size=999MB acl tls_connect at_step SslBump1 ssl_bump peek tls_connect ssl_bump splice all --------------------------- Firefox behavior... HTTPS: ALL OK! HTTP (http://google.com): The connection was reset The connection to the server was reset while the page was loading. The site could be temporarily unavailable or too busy. Try again in a few moments. If you are unable to load any pages, check your computer’s network connection. If your computer or network is protected by a firewall or proxy, make sure that Firefox is permitted to access the Web. --------------------------- Squid log: HTTPS: ---------- 1661786874.087 5981 {client} TCP_TUNNEL/200 152 CONNECT js-sec.indexww.com:443 - ORIGINAL_DST/92.123.33.225 - 1661786874.087 5855 {client} TCP_TUNNEL/200 152 CONNECT js-sec.indexww.com:443 - ORIGINAL_DST/92.123.33.225 - 1661786877.448 10391 {client} TCP_TUNNEL/200 1254 CONNECT prg.smartadserver.com:443 - ORIGINAL_DST/185.86.138.32 - 1661786878.480 4 {client} NONE/200 0 CONNECT 64.74.236.255:443 - HIER_NONE/- - 1661786886.125 7644 {client} TCP_TUNNEL/200 3850 CONNECT mcdp-chidc2.outbrain.com:443 - ORIGINAL_DST/64.74.236.255 - 1661786886.916 5 {client} NONE/200 0 CONNECT 54.192.111.67:443 - HIER_NONE/- - 1661786887.070 3 {client} NONE/200 0 CONNECT 34.98.75.36:443 - HIER_NONE/- - 1661786887.275 0 {client} NONE_ABORTED/200 0 CONNECT 88.221.111.34:80 - HIER_NONE/- - 1661786887.548 4 {client} NONE/200 0 CONNECT 54.192.111.44:443 - 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HIER_NONE/- - 1661786975.453 0 {client} NONE_ABORTED/200 0 CONNECT 151.101.3.5:80 - HIER_NONE/- - 1661786975.460 0 {client} NONE_ABORTED/200 0 CONNECT 151.101.3.5:80 - HIER_NONE/- - 1661786975.464 0 {client} NONE_ABORTED/200 0 CONNECT 151.101.3.5:80 - HIER_NONE/- - 1661786975.471 3 {client} NONE_ABORTED/200 0 CONNECT 151.101.3.5:80 - HIER_NONE/- - 1661786975.475 0 {client} NONE_ABORTED/200 0 CONNECT 151.101.3.5:80 - HIER_NONE/- - 1661786975.480 0 {client} NONE_ABORTED/200 0 CONNECT 151.101.3.5:80 - HIER_NONE/- - 1661786975.486 0 {client} NONE_ABORTED/200 0 CONNECT 151.101.3.5:80 - HIER_NONE/- - 1661786975.491 0 {client} NONE_ABORTED/200 0 CONNECT 151.101.3.5:80 - HIER_NONE/- - 1661786987.518 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.527 8 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.531 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.540 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.544 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.548 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.557 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.562 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.566 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - 1661786987.571 0 {client} NONE_ABORTED/200 0 CONNECT 172.217.18.238:80 - HIER_NONE/- - On Thu, Aug 18, 2022 at 4:05 PM <ngtech1ltd@xxxxxxxxx> wrote: > > Hey K, > > I need your Mikrotik and squid.conf and iptables to understand what the issue might be. > You will need to describe your setup in a way I can relate to it. > There is not much of a difference between port 80 to 443 just that the port need to have ssl-bump settings If you are using it. > The CONNECT port is a simple forward proxy and it seems your setup is not as simple as you describe. > If you do have NAT then you need this to be only on specific interfaces in the Mikrotik and the Squid server. > > In my case the basic setup works for a very long time now so I cannot imagine what's wrong in your case. > > Eliezer > > ---- > Eliezer Croitoru > NgTech, Tech Support > Mobile: +972-5-28704261 > Email: ngtech1ltd@xxxxxxxxx > Web: https://ngtech.co.il/ > My-Tube: https://tube.ngtech.co.il/ > > -----Original Message----- > From: M K <mohammed.khallaf@xxxxxxxxx> > Sent: Thursday, 18 August 2022 6:20 > To: ngtech1ltd@xxxxxxxxx > Cc: squid-users@xxxxxxxxxxxxxxxxxxxxx; Rafael Akchurin <rafael.akchurin@xxxxxxxxxxxx> > Subject: Re: Squid 4.8+ intercept > > Hello Eliezer, > > I finally got my setup to work; turned out to be intercepted clients > running into default nat, while my test squid server did not allow > them access, not even through iptables! > > Now, I have one last bit to handle, which you did not cover in your > video. I'm using 3 ports for squid like Rafael's guide: one for normal > CONNECT, one for intercepted plain HTTP on 80, and one for intercepted > HTTPs on 443. > > The setup works awesome for TLS addresses (i.e https://), but browser > redirection from Plain to TLS, say from http://cnn.com to > https://cnn.com, fails to happen. It just waits then time out. > What could be done to make it happen? > > All best, > K > > > On Sat, Aug 13, 2022 at 7:57 PM <ngtech1ltd@xxxxxxxxx> wrote: > > > > Hey K, > > > > > > > > What RouterOS version are you using? > > > > Also, what rules have you applied? > > > > If there is a very long delay and then a failure you should verify that the rules you wrote are proper to your environment. > > > > You should route packets based on connection marks and mark only new connections from LAN IP addresses and only on the LAN interface. > > > > As I showed in the demo video it’s very simple to implement. > > > > > > > > Let me know if you are still having issues. > > > > > > > > Eliezer > > > > > > > > ---- > > > > Eliezer Croitoru > > > > NgTech, Tech Support > > > > Mobile: +972-5-28704261 > > > > Email: ngtech1ltd@xxxxxxxxx > > > > Web: https://ngtech.co.il/ > > > > My-Tube: https://tube.ngtech.co.il/ > > > > > > > > From: M K <mohammed.khallaf@xxxxxxxxx> > > Sent: Saturday, 13 August 2022 10:59 > > To: ngtech1ltd@xxxxxxxxx > > Cc: squid-users@xxxxxxxxxxxxxxxxxxxxx > > Subject: Re: Squid 4.8+ intercept > > > > > > > > Thank you for your quick reply. The text-drawing actually changed with different font; the squid server is effectively connected to MikroTik router, not the same physical link as the client. > > > > > > > > The MikroTik router sits between the client and squid server. > > > > > > > > That said, I can confirm that the MikroTik router is effectively able to route/DNat client packets going to ports 80 and 443 to squid server. Depending on router rules be it route or dnat, the client browser effectively displays the error page of squid, or goes into a very long delay then failure. > > > > > > > > I will retry and let you know. > > > > > > > > K > > > > On Wed, Aug 10, 2022, 10:08 <ngtech1ltd@xxxxxxxxx> wrote: > > > > Hey K, > > > > > > > > I am not sure about the network topology. > > > > Preferably the Squid should reside on another network then the clients if it’s intercepting the traffic. > > > > Also, I assume it’s not a TPROXY setup so it should be pretty simple and straight forward. > > > > > > > > I understand why are you asking this question. > > > > Also take into account that Mikrotik is now on 7.4 firmware and it’s recommended to use this one. > > > > If you are using any other version let me know so I can try to make sense on the differences. > > > > I will try to give a DEMO for such a setup and how to make it work. > > > > > > > > Eliezer > > > > > > > > ---- > > > > Eliezer Croitoru > > > > NgTech, Tech Support > > > > Mobile: +972-5-28704261 > > > > Email: ngtech1ltd@xxxxxxxxx > > > > Web: https://ngtech.co.il/ > > > > My-Tube: https://tube.ngtech.co.il/ > > > > > > > > From: squid-users <squid-users-bounces@xxxxxxxxxxxxxxxxxxxxx> On Behalf Of M K > > Sent: Tuesday, 9 August 2022 22:29 > > To: squid-users@xxxxxxxxxxxxxxxxxxxxx > > Subject: Squid 4.8+ intercept > > > > > > > > Hello, > > > > > > > > I have a setup like this one: > > > > > > | Client | =====> | Router | =====> Internet > > || > > \/ > > | Squid | > > > > > > > > ...the router is a Mikrotik router capable of all things NAT/Redirect and whatnot. Squid server has only one network interface. > > > > Using the router: > > > > - I tried routing traffic to squid server IP. > > > > - I tried destination-NATing from client to server IP, with origin server IP-and-port natted to squid IP-and-port, and with origin server IP-only natted to squid-IP. > > > > > > > > I have been struggling for 2 days to setup a working Squid 4.8 or higher interception. > > > > Test server is running Ubuntu 18.4.3 and Squid 4.8. > > > > Documentation is either too much trim or extremely outdated. > > > > Any help would be very much appreciated. > > > > > > > > All best, > > > > K > _______________________________________________ squid-users mailing list squid-users@xxxxxxxxxxxxxxxxxxxxx http://lists.squid-cache.org/listinfo/squid-users