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Firewall / broadband data management

Firewall / broadband data management

Firewall / broadband data management

Hi Guys
Not being an expert in this area, I was after your thoughts on Sonicwall firewalls.

I have a customer who has the SOHO3 by sonicwall with 3 or 4 VPN's this is a 133Mz 16MB spec firewall amd in general it seems to perform quite well.

However, he does a bulk mail everyweek to his existing customer of new lines and price updates and it brings the link to a stand still for 2-3 hours.

I suspect the mail server is sending as much data as it can get through the firewall and ADSL, leaving no bandwidth for day to day internet access.

Typical mailing is 225KB and theres about 500 this equals 112MB
thats about 900Mb of data if my math is right.

I recon thats the best part of an hour flat out at 256Kb ADSL to send the mailing.

One of the key issues is the VPN's collaspsing because I assume theres no spare CPU/Memory to do the encryption and keep the VPN's alive.

I realise the ADSL will be the ultimate bottleneck, but it seems to take longer than an hour to send the mailing I can only assume the firewall is holding stuff back.

We also loose contact with the external DNS server so mails and websites fail domain name resolution, again I assume because theres no room to get the requests out and back.

I was going to propose a twin broadband solution with an aggregated I/O though a higher spec sonic wall firewall and bandwidth limit port 25 to half the available 512Kb this may slow down the bulk mail further, but I'm hoping it would allow the VPNs and web access simultaniously unlike now.

Any thoughts from any gurus on this plan?


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