nanog mailing list archives
Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ?
From: Rubens Kuhl <rubensk () gmail com>
Date: Fri, 10 Apr 2009 01:19:05 -0300
On shared media like radio access, every unwanted packet means less performance you will get out of the network. This can be done by NAT, stateful filtering with public IPs or stateless filtering with public IPs; the advantage of doing NAT is making it easier for the end-point software to know that (two ways: noticing your local IP address is from RFC1918 space, or connecting to a server that tells your IP in order to compare it to the local address). As such, GPRS, EDGE, EVDO, HSPA, LTE and Mobile WiMAX services have good reasons to use NAT, and most do. Rubens On Thu, Apr 9, 2009 at 12:48 PM, Lee, Steven (NSG Malaysia) <kin-wei.lee () hp com> wrote:
Hi all, in most of the existing 2G/2.5G mobile PS-core (Packet Switch) networks have Gi segment (interface between GGSN & IP Router/firewall). Due to the IP address constraint, operator usually do NAT on the Gi firewall to NAT the private IP to public IP in the past. Looking at the traffic pattern and user access behaviour, does it make sense to have firewall between the GGSN & Public Internet if the public IP addresses are sufficient to cater for mobile subscribers? Especially with 3G/UMTS/HSPA or even LTE in the future. Please share your thought and thanks in advance :) Regards, Steven Lee
Current thread:
- Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Lee, Steven (NSG Malaysia) (Apr 09)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Mikael Abrahamsson (Apr 09)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Roland Dobbins (Apr 09)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Roland Dobbins (Apr 09)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Eugeniu Patrascu (Apr 10)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Alexander Harrowell (Apr 09)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Roland Dobbins (Apr 09)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Mike Dimayuga (Apr 09)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Rubens Kuhl (Apr 09)
- Message not available
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Mike Tancsa (Apr 16)
- Message not available
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Mikael Abrahamsson (Apr 09)
- <Possible follow-ups>
- RE: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Skywing (Apr 09)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Charles Wyble (Apr 09)
- RE: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Lee, Steven (NSG Malaysia) (Apr 09)
- RE: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? TJ (Apr 16)
- Re: Do we still need Gi Firewall for 3G/UMTS/HSPA network ? Charles Wyble (Apr 09)