3CX DLL-Sideloading attack: What you need to know
Good morning everyone,I configured the BGP over RBVPN between our office and the 2 connectivity present at one of our customers (fiber and radio link), the connection is made via the prepend AS also tried with LOCAL PREF AND MED, if I try to switch off the fiber link neighbor, the traffic passes on the radio link , I can ping the firewall and can telnet on firewall but I cannot reach it via the GUI, if I reactivate the main link the ping also works correctly but in this way I can reach the sophos gui, can you help me solve the gui reachability problem via the backup link?ThanksOur firewall is SFVUNL (SFOS 19.0.1 MR-1-Build365) Customer firewall: XG125 (SFOS 19.0.1 MR-1-Build365)
Hi Valerio Baroni As PING over the backup link is working fine as per your information - so it seems connectivity is fine. Any luck by checking TCPDUMP & Drop packet on XG CLI during accessing it via the backup link? OR any difference when we compare it with the working link TCPDUMP when GUI is accessible? (Maybe some fragmentation issue with a backup link and an MSS-related tweak may fix it).
Regards,Vishal RanpariyaTechnical Account Manager | Sophos Technical SupportSophos Support Videos | Knowledge Base | @SophosSupport | Sign up for SMS Alerts | If a post solves your question use the 'This helped me' link.
Hi Vishal_R thanks for your reply, I tried tcpdump and drop packets and I don't see anything, I also tried setting MSS to 900 and nothing changes
Hi Valerio Baroni Thanks for the latest update, I would suggest opening a support case for further investigation and to conclude it.