Bash – Can’t access apache webserver remotely after connecting to VPN

I have an apache webserver installed on my pc whcih works as expected untill I connect to my VPN service provider (Private Internet Access) using their software.

Once connected I'm no longer able to remotely access the webserver (using my ISP's public ip address 123.4.5.6) with Connection Timeout error every time I try to access it. However the webserver will remain reachable through my local area network (using LAN ip address 192.168.0.6).

Here's my network diagram to the best of my knowledge (the isp and vpn ips are not the real ones):

Here's some info I gathered about the network (I disabled my UFW firewall and flushed all iptables rules to rule out the possibility that the firewall is causing it):

Before connecting to VPN:

me@mypc:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     1      0        0 eth0


me@mypc:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1d:09:b4:b9:21  
          inet addr:192.168.0.6  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::21d:9ff:feb4:b921/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:239399 errors:0 dropped:0 overruns:0 frame:0
          TX packets:89260 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:321072109 (321.0 MB)  TX bytes:17959636 (17.9 MB)
          Interrupt:17 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:359782 errors:0 dropped:0 overruns:0 frame:0
          TX packets:359782 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:140030332 (140.0 MB)  TX bytes:140030332 (140.0 MB)UU

After connecting to VPN:

me@mypc:~$ route -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         10.132.1.5      128.0.0.0       UG    0      0        0 tun0
0.0.0.0         192.168.0.1     0.0.0.0         UG    0      0        0 eth0
10.132.1.1      10.132.1.5      255.255.255.255 UGH   0      0        0 tun0
10.132.1.5      0.0.0.0         255.255.255.255 UH    0      0        0 tun0
128.0.0.0       10.132.1.5      128.0.0.0       UG    0      0        0 tun0
192.168.0.0     0.0.0.0         255.255.255.0   U     1      0        0 eth0
234.5.6.7       192.168.0.1     255.255.255.255 UGH   0      0        0 eth0


me@mypc:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1d:09:b4:b9:21  
          inet addr:192.168.0.6  Bcast:192.168.0.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:238838 errors:0 dropped:0 overruns:0 frame:0
          TX packets:88929 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:320930349 (320.9 MB)  TX bytes:17868326 (17.8 MB)
          Interrupt:17 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:348572 errors:0 dropped:0 overruns:0 frame:0
          TX packets:348572 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:135702614 (135.7 MB)  TX bytes:135702614 (135.7 MB)

tun0      Link encap:UNSPEC  HWaddr 00-00-00-00-00-00-00-00-00-00-00-00-00-00-00-00  
          inet addr:10.132.1.6  P-t-P:10.132.1.5  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1
          RX packets:833 errors:0 dropped:0 overruns:0 frame:0
          TX packets:918 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:100 
          RX bytes:694943 (694.9 KB)  TX bytes:105489 (105.4 KB)

What is causing this issue and how can I fix it?