Odd Firewall Behavior

Non-Technical Threads Chatting over the Back Fence
1

I have an ISP link that goes into a 5 port fast ethernet switch.
Off of that switch are hanging two firewalls. One with IP (fakes)
Firewall A 222.222.222.1 the other Firewall B 222.222.222.2.
Coming across Firewall B is a VPN that supports connections to SERVER1.
SERVER1’s default gateway is set to Firewall B.

When Firewall A is plugged into the switch, traffic to SERVER1 becomes
inordinately slow or stops altogher. When Firewallo A is removed from the
switch, traffic returns to normal.

WTH?

2

GofBorg wrote:
[color=blue]

I have an ISP link that goes into a 5 port fast ethernet switch.
Off of that switch are hanging two firewalls. One with IP (fakes)
Firewall A 222.222.222.1 the other Firewall B 222.222.222.2.
Coming across Firewall B is a VPN that supports connections to SERVER1.
SERVER1’s default gateway is set to Firewall B.

When Firewall A is plugged into the switch, traffic to SERVER1 becomes
inordinately slow or stops altogher. When Firewallo A is removed from the
switch, traffic returns to normal.

WTH?[/color]

I have tested for bad cabling.

3

GofBorg wrote:
[color=blue]

I have an ISP link that goes into a 5 port fast ethernet switch.
Off of that switch are hanging two firewalls. One with IP (fakes)
Firewall A 222.222.222.1 the other Firewall B 222.222.222.2.
Coming across Firewall B is a VPN that supports connections to SERVER1.
SERVER1’s default gateway is set to Firewall B.

When Firewall A is plugged into the switch, traffic to SERVER1 becomes
inordinately slow or stops altogher. When Firewallo A is removed from the
switch, traffic returns to normal.

WTH?[/color]

Oh and bad switch port.

4

GofBorg sounds like they ‘said’:
[color=blue]

WTH?[/color]

So my response to GofBorg’s comment is…

Check for any weird routing loops or anything like that?

–
Stevo