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Question : Problem: Problems configuring a Cisco PIX 501 firewall.
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Hello, I am running into some issues with my current network config, and getting a PIX 501 setup. The problem that I am running into is that while Internet access is working fine, and I can access our DMZ hosts on the other side of the firewall with no issues, anytime we try to access the MySQL server on the DMZ side of the network, communications are unacceptably slow. Here is the current config we are working with. T1 to Cisco 1601 (running access-lists to filter out all but accepted traffic. http, https, MySQL, SSH, etc.), Cisco 1601 to a hub (for DMZ hosts), hub to Cisco PIX 501, PIX 501 to internal hub (and out to office PC's and fileserver). The Cisco router portion of this is working fine. We recently added the PIX 501 to better secure the internal network. Here is the current PIX configuration:
: Saved : Written by enable_15 at 10:10:46.960 UTC Thu Dec 15 2005 PIX Version 6.2(2) nameif ethernet0 outside security0 nameif ethernet1 inside security100 enable password xxxxxxxxxxxxxx encrypted passwd xxxxxxxxxxxxxxx encrypted hostname fw0 domain-name hlsm.com fixup protocol ftp 21 fixup protocol http 80 fixup protocol h323 h225 1720 fixup protocol h323 ras 1718-1719 fixup protocol ils 389 fixup protocol rsh 514 fixup protocol rtsp 554 fixup protocol smtp 25 fixup protocol sqlnet 1521 fixup protocol sip 5060 fixup protocol skinny 2000 names pager lines 24 interface ethernet0 10baset interface ethernet1 10full mtu outside 1500 mtu inside 1500 ip address outside xxx.xxx.204.30 255.255.255.0 ip address inside 192.168.1.1 255.255.255.0 ip audit info action alarm ip audit attack action alarm pdm location 192.168.1.51 255.255.255.255 inside pdm logging informational 100 pdm history enable arp timeout 14400 global (outside) 1 216.37.204.31 nat (inside) 1 0.0.0.0 0.0.0.0 0 0 route outside 0.0.0.0 0.0.0.0 216.37.204.254 1 timeout xlate 0:05:00 timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h323 0:05:00 sip 0:30:00 sip_media 0:02:00 timeout uauth 0:05:00 absolute aaa-server TACACS+ protocol tacacs+ aaa-server RADIUS protocol radius aaa-server LOCAL protocol local http server enable http 192.168.1.0 255.255.255.0 inside no snmp-server location no snmp-server contact snmp-server community public no snmp-server enable traps floodguard enable no sysopt route dnat telnet timeout 5 ssh timeout 5 dhcpd address 192.168.1.2-192.168.1.129 inside dhcpd lease 3600 dhcpd ping_timeout 750 dhcpd auto_config outside terminal width 80 Cryptochecksum:f854e068dc8109e7050a8e29d896023c : end
I am open to any suggestions on this situation. I was thinking about having the PIX 501 directly behind the router, but we are hosting a good few websites, and I am not sure if the 501 can handle the load of all of the webservers. If anyone can shed some light on why only MySQL transactions are slow across the PIX, I would greatly appreciate it.
Thanks, Mike Hilty Lead IT Technician HLSM Parts and Accessories [email protected]
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Answer : Problem: Problems configuring a Cisco PIX 501 firewall.
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So, before adding the PIX, the MySQL was directly behind the 1601 and performance was acceptable? Just making sure the problem is with the PIX...
If my assumption is right, try without the fixup protocol sqlnet for troubleshooting purposes. Or, can you easily put the MySQL back onto the internal network just as a test? Usually, MySQL is placed on the internal network anyway. Then, if your DMZ web servers need access, you open the needed ports via static and access lists.
One more thing to look at on the PIX:
show interface e0
Make sure there are no errors. If there are, you might have a duplex/speed mismatch. Ensure you hardcode the interface on both ends or try to set it to auto.
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