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Is it possible to hairpin on Cisco 851W IOS 12.4(15)T9 and how?

I need machines on the LAN to be able to access by the external address or hostname. If it can't be done, then just by hostname is OK as well, so I thought of just doing it through DNS on our internal ...
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1answer
148 views

Dead-simple Juniper firewall hairpinning [closed]

I have a SRX100 firewall running JunOS 12.1. I have a WAN interface proxy ARPing ten or so static routable IPs. I have a LAN interface on a simple class-C subnet (we'll call it 192.168.0.x). I'm using ...
5
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1answer
1k views

How do you NAT Hairpin in IOS 8.3+

As I asked here and duplicated here it appears NAT Hairpinning is the answer I'm looking for to allow internal servers to loopback through the ASA to access external IP's (without using DNS ...
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1answer
264 views

How can I access a server on local network using its public name?

I have a problem in which I cannot access a server using its public name from the same network as the server. Access to the server works fine from the internet. Reading up on this problem, I've ran ...
1
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0answers
253 views

Default Gateway solution on NAT'd network (best options)

I've recently changed a network from a bunch of machines exposed to the net on a network to a more security conscious Firewall-fronted network with a DMZ for public services. Everything's mostly ...
5
votes
1answer
390 views

Setting Up NAT Hairpinning to Connect to Site from an Internal IP Address

We use a WordPress plugin that checks for broken links. It uses cURL to do this. External links work fine but internal ones, not so much. The connection is refused. Talked to our host about this and ...
1
vote
4answers
383 views

How can I set up a local nameserver and modify DNS zones on it?

This is a follow up to this question. I am having an issue with a Router that doesn't support hairpinning properly. See the link above for details. Now I want to set up a local DNS server that Hosts ...
2
votes
2answers
456 views

Bastion Firewall Host ipTables Redirect Question

Some background: A firewall has been constructed using RH Fedora 13, Kernel 2.6.34.7-63, and IPTables 1.4.7. The firewall is a simple, twin adapter configuration, with the external interface (eth0) ...
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3answers
520 views

Port Forwarding

Assuming port forwarding is done on router, can the router forward if the data is coming from local machine, rather than remote. For example: Sender targets ip like:88.251.xxx.xxx, port 8999. ...
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vote
3answers
2k views

Cisco ASA Hairpinning with Dynamic IP

I currently have my Cisco ASA 5505 firewall configured to forward port 80 from the outside interface to a host on my dmz interface. I also need to allow clients on my inside interface to access the ...