1
vote
1answer
29 views

how to forward proxy requests using iptables

I've this schenario ----------------- ---------------- ---------- | SERVER A | ---(port:2128)> | PROXY | ---> | INTERNET | | (10.30.1.1) | ...
3
votes
4answers
214 views

Is this iptables NAT exploitable from the external side?

Could you please have a short look on this simple iptables/NAT-Setup, I believe it has a fairly serious security issue (due to being too simple). On this network there is one internet-connected ...
-1
votes
1answer
173 views

any consumer router supports change source and destination IP at the same time?

For the purposes of PCI-DSS compliance, I have been asked to see if there's a small consumer router/etc that can accept a packet from one network segment, and change the destination IP address (from ...
1
vote
0answers
307 views

internet connection sharing using NAT or Proxy

I have problems with a proxy auth over a shared network. Config: 1 server with 2 NICs and windows server 2008 r2 NIC_1 = 10.xx.xx.xx AD Internet connection ...
0
votes
0answers
91 views

port forwarding using 3 static ip addresses

I am new to configuring routers. We have purchased a RV016 Cisco business router that has multiwan capability. What we are attempting to do is take map services from 3 different servers and assign 3 ...
3
votes
2answers
529 views

Why is nat required when proxy is enough? [closed]

My machine is connected in a local lan. to connect to the internet the traffic goes through proxy server. my understanding of proxy server is that it sends the request on behalf of the original ...
2
votes
1answer
83 views

How can I Nat certain boxes in my datacenter so that they are coming from a single IP

I want to NAT a certain group of servers in my datacenter so that they all access clients from a single IP. This will make it much easier for documentation that we provide clients. However there ...
5
votes
1answer
930 views

How do you get AWS VPC EC2 instances to be able to see the AWS APIs?

We're spinning up infrastructure inside of an AWS VPC via CloudFormation. We're using auto-scaling groups to bring up VPC-EC2 instances (so, we don't bring up instances directly; ASGs manage that). ...
2
votes
2answers
93 views

Port Routing between different domains

i have a apache server located on a.com:9254 I would like to route a.y.com:80 to a.com:9254. So, I can put all my services under y.com domain. I tried proxy. However, In apache, it looks all ...
4
votes
1answer
283 views

What is the difference between a web cache and a hierarchial cache server?

I'm trying to make sense of how to set up the simplest possible thing that could actually work at my office where we host events and have lots of people coming, potentially everyone downloading the ...
1
vote
3answers
656 views

Is there still any legitimate reason (in 2011) to use proxy servers instead of NAT for sharing an internet connection?

Proxies were around before NAT, and so early on in the internet, they were popular ways to get an entire network online with only a single public IP. NAT initially required complex software and/or ...
1
vote
1answer
337 views

NFS proxy / re-export

I have a situation where I need to mount a few NFS shares on a series of clients on replicated VM networks. So their source IP addresses are not unique. In between the client and the server there is a ...
0
votes
2answers
374 views

Firewall issue with multiple SIP PROXY / REGISTRAR servers

We have a pair of Internet-facing SIP PROXY/REGISTRAR servers (for resilienced and load-balancing). When a SIP phone registers, it will be handled by one of the REGISTRAR servers (round-robin DNS) - ...
2
votes
3answers
1k views

Manual NAT on Checkpoint (Redirect all http requests to a local web server)

We have a proxy server in our internal network and I want to redirect all internet http requests to a web server in local network. It'll be like a Network Billboard that says "No direct connection is ...
1
vote
3answers
246 views

NAT or proxy against malicious software

I had this conversation with a colleague about preventing viruses/trojans from accessing the internet from within a corporate network. He says that a proxy server for http traffic with an unusual port ...
1
vote
3answers
732 views

RDP to double-NAT'ed machine through secondary server

I wondered if anyone can suggest a free tool that will allow me to connect to my home development machine, which is behind a NAT'ed firewall owned by my ISP through a server that I lease that is on ...