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Questions tagged [transparent-proxy]

210 questions
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Connection refuse after ip route add local 0.0.0.0/0 dev lo table 100

i have ubuntu vps server, and want to use TPROXY to handle all outgoing traffic by Go Simple Tunnel , i apply these ip table rules iptables -t mangle -N DIVERT iptables -t mangle -A DIVERT -j MARK --set-mark 1 iptables -t mangle -A DIVERT -j…
Arman Kabir
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Making a Two-step VPN Connection using a Transparent Proxy behind OpenVPN

I have two VPSs and I'm trying to make a two-step VPN connection as follows: [start] >> Client <-> OpenVPN on Server A <-> Proxy (ex: SQUID) on Server B <-> Internet So far: I set up the OpenVPN server correctly on an interface named tun0 and there…
Shojajou
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Double Proxy: IPSec to Server1 then SSH to Server2

What I'm trying to achieve: (Clients)(Server 1)(Server 2) --> Free Internet How is that possible for both UDP and TCP traffics? What I've done: I ran this on Server1: ssh -N -D 1080 user@Server2:7999 I used gost…
Masood Lapeh
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How can I set up a transparent proxy (TPROXY type) across network namespaces?

I want to setup a transparent proxy across network namespaces. I have two network namespaces, "nsx" and "nsy", each one has a veth pair, the pair of "nsx" is pointed to the host, the pair of "nsy" is pointed to "nsx", in the following scheme…
phantomcraft
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Should HTTP load balancer forward bad requests to backend?

If a HTTP client sends a GET request with a body that would generate a 400 Bad Request response, should the load balancer forward that request to the backend or deal with it immediately? Is there any advantage in NOT dealing with it at the load…
gtirloni
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Proxy squid Very slow

I work in a school where we have approximately 500 computers. We have installed a proxy SQUID to filter adult websites etc. The server got like 32go ram and enough storage. But surfing become too slow when there are too many clients. -What could be…
redshadow
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Rolling updates of backend with udp server sockets

I have a backend system used for IOT devices which use UDP protocol for communications. And there are certain TCP (HTTP2) based APIs for mobile apps from the same backend. I am trying to build a rolling update feature to enable 0 downtime patching…
Gopinath
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Routing all traffic from an external machine to a proxy to a proxy

May be there is a duplicated question but it seems no one do this scenario. I have several machines in my network which are not using proxy to outbound. I want to redirect all traffic, using route tables, to an appliance so that appliance ingests…
Julio
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SQUID Transparent Proxy: Error INVALID_URL and ACCESS_DENIED

I configure squid proxy on Centos 7. I am using Squid version 3.5.20. I also try squid 4.10 on Ubuntu 20.04, but I got the same problem. Maybe my ACL was wrong. I configure DSTNAT on Router to intercept HTTP traffic from 192.168.1.0/24 to Squid…
xdnroot
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TPROXY redirect and routing decision

I would like to ask what happens internally when redirecting using Tproxy. iptables -t mangle -A PREROUTING -p tcp --dport 443 -j TPROXY --tproxy-mark 1 --on-port 40001 It located in PREROUTING in the mangle table of iptables. As far as I know, the…
hybang
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Fully transparent reverse proxy

I'm trying to set up the following: ┌──────────────────┐ ┌────────────────────┐ ┌─────────┐ │ │ │ │ │ │ │ Router │ │ …
Trigus
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What is an HTTP Proxy (forward not reverse) required to do with a client's request headers?

1 Could someone help me distill down what, exactly, the minimum requirements are for a proxy server (just a forward proxy not reverse) with regard to headers? What headers absolutely must be deleted from the client request before it's passed…
AdjunctProfessorFalcon
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What is the correct definition of a transparent proxy?

What is the correct definition of a transparent proxy? I see the term being used for proxies that require no configuration that do not modify requests and for proxies that do require configuration but do not modify the request. What is the correct…
comctimert
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setting up transparent proxy on gateway computer

I am looking to setup a transparent proxy (client) on a computer which will act as a gateway/router for (client) computers connecting to this gateway computer. The client computers use a VPN client which is not going to be modified (nor will it…
ali haider
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Squid proxy server returning error

I have designed a topology which has an external proxy server (192.168.239.152) and a Mikrotik Router (192.168.239.151). The MikroTik router connected with a LAN and enables internet connection to LAN PCs. The LAN PCs has IP from the block…
Abhi
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