I have a router....firewall needed?
08-03-2005, 21:10
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#1
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cf.mega poster
Join Date: Jun 2003
Location: Glasgow
Age: 50
Posts: 1,831
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I have a router....firewall needed?
Hello there,
Now that I have a router for my internet connection am I correct in thinking that I can now just uninstall my firewall?
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08-03-2005, 21:13
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#2
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Inactive
Join Date: Dec 2003
Location: Manchester
Posts: 993
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Re: I have a router....firewall needed?
No, you still need one.
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08-03-2005, 21:15
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#3
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R.I.P.
Join Date: Jun 2003
Location: Near Sandy Heath transmitter
Services: BT
Posts: 19,325
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Re: I have a router....firewall needed?
If you have a (decent) firewall installed it will also warn you about outbound connections. Personally I'd keep a firewall installed for this reason.
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08-03-2005, 23:15
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#4
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Inactive
Join Date: Jun 2003
Location: Los Angeles, CA
Age: 45
Posts: 6,343
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Re: I have a router....firewall needed?
If you have a NAT router then it will block all incoming ports unless you set it to forward any.
I have a NAT router and haven't used a firewall for years, never had any probs.
The only issues you will have is with malicious software installed on your internal network but if you're careful and use a secure browser (hint: not IE) then you should be safe.
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08-03-2005, 23:16
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#5
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Inactive
Join Date: Jun 2003
Location: 127.0.0.1
Age: 59
Posts: 15,868
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Re: I have a router....firewall needed?
It really depends on your router, some have better firewalls than others. And you probably need to be aware of any upgrades to the router's firmware, to ensure that any little bugs that might be found are patched.
The true belt and braces approach is to have hardware firewall in your router, and software firewalls on your PC(s). I tend just to rely on my router, which is only a basic Linksys Wireless thing.
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08-03-2005, 23:19
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#6
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[NTHW] pc clan
Join Date: Jun 2003
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Re: I have a router....firewall needed?
I have hardware and software firewalls..........but then I also have 5 different anti spyware progs as well 
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08-03-2005, 23:21
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#7
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cf.mega poster
Join Date: Jan 2003
Posts: 4,984
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Re: I have a router....firewall needed?
Good advice... I run software firewalls at app level only, Hardware firewall on the Pix and software filtering via ISA server/proxy...
+ the good old antivirus (etrust) and spybot, spywareblaster, adaware, spywareguard and regwatch.
The internet can be a very dangerous place now a days !
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08-03-2005, 23:23
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#8
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Inactive
Join Date: Aug 2003
Location: nowhere
Posts: 718
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Re: I have a router....firewall needed?
No you don't need one as long as your router is using nat, however, most people will tell you to install a software firewall as well because it will give you added security so that you can identify anything coming in and going out.
I have a windows 2000 box sitting behind a router without a firewall running and it is on for around 18 hours a day and it has yet to be compromised.
Some useful info from the web:
Security: Basic NAT is not a real firewall?
Basic NAT devices are not real firewalls, but they are usually considered †˜good enoughââ‚Ã⠀šÃ‚¬ÃƒÂ¢Ã¢â‚¬Å¾Ã‚¢ for most home networks. By not forwarding requests or probes that originate from the internet to your LAN, a NAT device blocks most mischief. A simple NAT device can not keep hackers from running DOS (Denial Of Service) attacks on you, but individuals rarely get attacked like that. It will keep out people looking for file shares, rogue mail servers and web servers, and most port based exploits. Most also protect against SMURF and WinNuke atatcks. With a NAT device and a good anti-virus program, you should be safe from the most common kinds of internet attacks.
Stateful packet inspection (SPI)
Some NAT routers have an advanced form of firewall built in that does 'stateful packet inspection'. This allows the NAT devices to filter out specific kinds of data on your router like SYN flood attacks, IP Spoofing, Teardrop attacks and others. SPI is a general term that can describe a router that filters more kinds of attacks than basic NAT by closely examining packet data structures. Of course, each manufacturer will implement different kinds of SPI so not all SPI routers are equal. Routers with SPI can often log attacks.
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08-03-2005, 23:28
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#9
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Guest
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Re: I have a router....firewall needed?
ive had a router running about 6 months now and in that time my software firewall hasnt detected anything coming in.
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08-03-2005, 23:33
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#10
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Inactive
Join Date: Jun 2003
Services: Virgin Media
Posts: 9,163
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Re: I have a router....firewall needed?
Quote:
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Originally Posted by gary_580
ive had a router running about 6 months now and in that time my software firewall hasnt detected anything coming in.
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Since I got my router, well over a year and a half ago, I've not had one report from the software. The incoming log on the router has a lot of entries though 
Suppose it depends on how paranoid you are. 
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09-03-2005, 07:53
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#11
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Inactive
Join Date: Jun 2003
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Re: I have a router....firewall needed?
If your that worried, by a hardware firewall, something like a Juniper Netscreen 50 should do you 
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09-03-2005, 08:09
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#12
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Guest
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Re: I have a router....firewall needed?
Since testing my routers firewall and it passes with flying colours, I've had no need to install a software firewall. And I havn't had any problems either.
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10-03-2005, 21:43
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#13
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Inactive
Join Date: Mar 2004
Services: BB:M, TV:XL, Phone:M, Loyalty
Posts: 2,516
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Re: I have a router....firewall needed?
In the usual router + firewall scenario, the router provides a level of defence against external attacks that is better than "Windows firewall".
The software firewall's main task (and Windows firewall is USELESS for this) is then to marshall the connetctions you may or may not wish to be made - application permission
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10-03-2005, 22:14
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#14
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Inactive
Join Date: Jun 2003
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Re: I have a router....firewall needed?
Quote:
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Originally Posted by KingPhoenix
If your that worried, by a hardware firewall, something like a Juniper Netscreen 50 should do you |
Wow what a bargain.
http://www.inmac.co.uk/catalogue/item/JUNFIR07
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10-03-2005, 23:06
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#15
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Inactive
Join Date: Jun 2003
Location: Los Angeles, CA
Age: 45
Posts: 6,343
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Re: I have a router....firewall needed?
Quote:
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Originally Posted by poolking
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Multiple DMZ... 
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