• UTM & COLT not working on a CISCO-Switch (State UP, Link DOWN)

    Hey all, we´re expericing the following strange behaviour: 2 UTM SG430 in A/P-HA are connected to a HP-Procurve 2810-24G Switch. This Switch then connects via SX-SFP to the ACCEDIAN-Router delivered from COLT with our 1 GBit WAN-Line. So far so good…

  • RED Interface MTU same as WAN MTU?

    I am using Multiple RED tunnels on our UTM. Obviously they use the Wan interface on our UTM's so do I set the MTU size on the RED interfaces the same as the WAN MTU size? Wouldnt an 1500 MTU on an 1492 MTU WAN Interface force the UTM to fragment each…

  • Sophos UTM 9.407-3 released

    Up2Date 9.407003 package description: Remarks: System will be rebooted Configuration will be upgraded Connected REDs will perform firmware upgrade Connected Wifi APs will perform firmware upgrade News: Maintenance Release Bugfixes: Fix [NUTM-4079…

  • Issue of MSS on IPSEC VPN

    I have SG devices on the Head office and branch office. And two devices are connected using IPSEC VPN tunnel. All traffic including internet traffic from the branch office is going out through Head office. That means IPSEC VPN full tunnel. There was…

  • Several Services Cannot Connect after Upgrade beyond 9.404-5 (First Release)

    A month or so ago, I tried to upgrade from the first release of 9.404-5 to 9.405005 and random things started having issues, such as not being able to connect to Minecraft servers (clients behind UTM connecting outbound, not hosting behind UTM). A few…

  • RE: NAT, DSNAT & 6001, 6003- proper setup?

    There also was the small MTU bug in the external wan interface, fixed that with vi /var/chroot-dhcpc/etc/default.conf fix described here, that helped a bit, still dropping packets.

  • How to ignore my ISPs DHCP MTU of only 576?

    Hello Sophos Experts! My issue is as follows... My ISPs DHCP server is setting my external interface's MTU to 576. While an MTU of 1500 should (and does) work, whenever I change the MTU in the WebAdmin UI, it gets reset to 576 by DHCP. Yes, getting…

  • UTM 9.405-5 MTU Probleme

    Hallo zusammen, seit einigen Jahren betreibe ich eine UTM (früher astaro) auf einem i3 4GB mit 3 Intel NICs. Daran hängt mein privates Netzwerk, verbunden mit einem 4 mbit DSL Anschluss als Fallback und einem 50mbit Business-Unitymedia Anschluss. Hat…

  • RE: Up2Date 9.405005 available

    giomoda said: ..... While I agree that using ISP MTU should be available as an option, and not mandatory as it is, from my perspective this is more of a ISP issue then a Sophos issue, as your ISP should never be providing such a low MTU as a DHCP…

  • Disable bad bugfix in 9.405-5 "Fix [NUTM-2840]: [AWS] UTM ignores MTU sent by DHCP server"

    Do not do this if you don't feel comfortable messing up your UTM. I'm pretty shure this voids the warranty. But my UTM is pretty useless using a MTU of 576 from my ISP. The 9.405-5 upgrade introduces a mandatory, non disable, usage of the MTU provided…

  • How to file a ticket with a home licence? Ref. Bad Bugfix in 9.405-5 "Fix [NUTM-2840]: [AWS] UTM ignores MTU sent by DHCP server".

    How to file a ticket with a home licence? Ref. Bad Bugfix in 9.405-5 "Fix [NUTM-2840]: [AWS] UTM ignores MTU sent by DHCP server" making my (and others) UTM use our badly configured ISP MTU settings? My ISP tells my UTM in DHCP Offer to use a MTU…

  • RE: Up2Date 9.405005 available

    rfcat_vk said: The PPPoE or PPPoA should show you the mtu value you are receiving from your ISP. My MTU problem is not with my PPPoE connection (PPPoE works with DHCP), it's with my regular DHCP Ethernet connection the MTU 576 is a challenge…

  • RE: Up2Date 9.405005 available

    PaulHolt said: I'm using a Broadcom dual NIC card. My External MTU is 576 and I can't change it to 1500 either, keeps reverting back to 576 after the save. My UTM was working fine until this update. I have the same. Upgraded to 9.405-5, and…
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